Georgia Medicare Prescriber Enrollment 2026 Guide

::: hero

By Brevy Care Team · Last verified May 13, 2026

If you are a Georgia Medicare beneficiary and your pharmacy just told you that your prescription cannot be filled because of a problem with your doctor, you are not crazy. You are running into one of the least-understood rules in Medicare Part D. Under Section 1860D-4(c)(5) of the Social Security Act, which Congress added through Section 6405 of the Affordable Care Act of 2010, prescriptions for Part D drugs can only be filled when written by a prescriber who is enrolled in Medicare, has validly opted out of Medicare, or is not on the CMS Preclusion List. The Centers for Medicare and Medicaid Services operationalizes this requirement through 42 CFR 423.120(c)(6) for Part D and the parallel 42 CFR 422.222 for Medicare Advantage, both of which took on their current form effective January 1, 2019 under the CMS-4185-F final rule.

The result is a real-time prescriber check that runs every time your pharmacy submits a Part D claim. If your physician failed to file the right form, missed a revalidation deadline, retired without updating Medicare, was placed on the Preclusion List, or simply switched practices without updating PECOS (the Provider Enrollment Chain and Ownership System), your prescription is rejected at the counter at your CVS in Sandy Springs, your Walgreens in Macon, your Publix Pharmacy in Tifton, your Kroger Pharmacy in Athens, or your Walmart Pharmacy in Albany. This guide explains exactly what just happened, what your rights are under the 30-day provisional fill pathway at 42 CFR 423.120(c)(6)(iv), how to get the prescription filled today, and how to make sure this does not happen again with your other prescribers. :::

::: callout

Key takeaways for Georgia Medicare beneficiaries

1. Part D prescriptions require an eligible prescriber. Under Section 1860D-4(c)(5), your prescriber must be (a) enrolled in Medicare via Form CMS-855I or CMS-855O, (b) validly opted out under 42 CFR 405.405, or (c) not on the CMS Preclusion List under 42 CFR 422.222 and 423.120(c)(6).

2. The rule applies at the pharmacy, not at the doctor's office. Your physician can write the prescription, but the Part D plan's pharmacy benefit manager runs a real-time check before the claim is approved. The rejection happens at the counter.

3. Form CMS-855O is the lighter enrollment. A physician who does not bill Medicare directly (residents, hospital-employed physicians, retired physicians who occasionally prescribe) can file CMS-855O, which is "enrollment solely to order and refer." It costs nothing, has no billing implications, and satisfies the prescriber requirement.

4. Form CMS-855I is full enrollment. Physicians who bill Medicare directly file CMS-855I, which is the full enrollment form.

5. Valid opt-out also satisfies the rule. Physicians who file a valid opt-out affidavit with Palmetto GBA can still write Part D prescriptions. Common in concierge medicine and direct primary care.

6. The Preclusion List is separate. Even an enrolled physician can be placed on the Preclusion List for misconduct. A 60-day advance notice is required. Appeal rights include reconsideration, ALJ, Appeals Council, and federal court.

7. You get a 30-day provisional fill. Under 42 CFR 423.120(c)(6)(iv), when your Part D plan rejects a prescription because the prescriber is on the Preclusion List, the plan must provide a 30-day provisional supply and send notice to you and to the prescriber.

8. Medicare enrollment is national, not state-specific. A physician enrolled in Alabama can prescribe for a Georgia patient. Out-of-state specialists are not the problem if they are enrolled at all.

9. Palmetto GBA is Georgia's MAC. Palmetto GBA, headquartered in Columbia, South Carolina, handles Jurisdiction J (Georgia, Alabama, Tennessee). Provider enrollment phone: 1-855-696-0705.

10. Appeal rights are real. If your prescription is rejected and you believe the rejection is improper, contact your Part D plan, GeorgiaCares SHIP at 1-866-552-4464, or Medicare at 1-800-MEDICARE. Brevy at brevy.com has additional written guides. :::

The statute: Section 6405 of the Affordable Care Act and Section 1860D-4(c)(5) of the Social Security Act

The prescriber enrollment requirement is one of the lesser-discussed provisions of the Patient Protection and Affordable Care Act of 2010. Section 6405 of Public Law 111-148, titled "Physicians Who Order Items or Services Required to Be Medicare Enrolled Physicians or Eligible Professionals," was signed by President Obama on March 23, 2010. Section 6405(a) added a new paragraph (5) to Section 1860D-4(c) of the Social Security Act. The statutory text requires that a Part D plan sponsor "shall ensure that pharmacy claims for covered Part D drugs are not paid unless the claim contains the National Provider Identifier of a physician or eligible professional who is enrolled" in Medicare or has validly opted out.

The legislative history is straightforward. Congress had identified a small but significant category of Part D fraud and patient harm that involved prescriptions written by individuals who were no longer (or never had been) qualified to participate in Medicare. Some were excluded providers, some were impersonators, some were physicians who had lost state licensure but were still writing scripts. Section 6405 was designed to add a verification layer at the pharmacy point of sale.

Section 6405(b) extended the requirement to Part A and Part B items and services that require a physician order: durable medical equipment, prosthetics, orthotics, and supplies (DMEPOS), home health services, and certain laboratory and imaging studies. That extension is implemented at 42 CFR 424.507. The Part D piece is implemented at 42 CFR 423.120(c)(6), which is the focus of this guide.

The original CMS implementation of Section 6405 used an "active enrollment or valid opt-out" standard. A prescriber had to be either currently enrolled in Medicare (under CMS-855I, CMS-855O, or a similar form) or had to have filed a valid opt-out affidavit. Anything else, and the prescription was supposed to be rejected. CMS scheduled the enforcement date for early 2014. Then it delayed. Then delayed again. Then delayed again.

The problem was operational. CMS estimated that millions of legitimate Medicare prescriptions were being written by physicians who, for one reason or another, were not in the Medicare enrollment system. Hospital residents, retired physicians who continued to see family members, federal physicians (VA, IHS, DOD), and physicians who had simply never bothered to enroll because they did not bill Medicare directly all wrote prescriptions that could be rejected wholesale under the strict standard. Pharmacy industry groups, physician advocacy groups, and beneficiary advocates all asked CMS to find a different approach.

CMS-4185-F: the Preclusion List replaces the strict enrollment standard

In April 2018, CMS issued the Final Rule "Medicare Program; Contract Year 2019 Policy and Technical Changes to the Medicare Advantage, Medicare Cost Plan, Medicare Fee-for-Service, the Medicare Prescription Drug Benefit Programs, and the PACE Program," CMS-4185-F, 83 Fed. Reg. 16440 (April 16, 2018). Among many other changes, CMS-4185-F overhauled the prescriber enrollment requirement.

The new framework replaced the strict "enrollment or opt-out" standard with a more targeted "not on the Preclusion List" standard. Effective January 1, 2019, the regulation at 42 CFR 423.120(c)(6) provides that Part D plans must reject claims for prescriptions written by prescribers on the Preclusion List. The parallel regulation at 42 CFR 422.222 applies to Medicare Advantage plans.

This is a meaningful policy shift. Under the old standard, the default was rejection unless the prescriber was affirmatively enrolled or had opted out. Under the new standard, the default is acceptance unless the prescriber is on the Preclusion List. CMS estimated this would reduce the number of unjust rejections by orders of magnitude while still catching the bad actors that Section 6405 was originally designed to address.

In practice, both standards still play a role:

• A prescriber who has filed CMS-855I or CMS-855O has an active Medicare enrollment, is presumptively not on the Preclusion List, and is therefore presumptively able to write Part D prescriptions.
• A prescriber who has filed a valid opt-out is similarly presumptively eligible.
• A prescriber who has never enrolled and has never opted out is not necessarily disqualified, but the Part D plan and pharmacy benefit manager may still query the NPI against the Preclusion List to verify.
• A prescriber who has been placed on the Preclusion List is barred.

The pharmacy point-of-sale check today verifies (1) that the NPI is valid in NPPES, the National Plan and Provider Enumeration System, and (2) that the NPI is not on the Preclusion List. If both checks pass, the claim moves to the next adjudication step (formulary, prior authorization, cost-sharing).

Who is on the Preclusion List and how does CMS decide?

The Preclusion List is maintained by the CMS Center for Program Integrity. The criteria for listing are defined at 42 CFR 422.222 and 423.120(c)(6).

A prescriber is added to the Preclusion List if both of the following are true:

1. The prescriber has had Medicare enrollment revoked under 42 CFR 424.535 and is currently within the applicable reenrollment bar period, OR the prescriber has engaged in conduct that would be a basis for revocation if the prescriber had been enrolled.

2. CMS determines that the prescriber's underlying conduct is detrimental to the best interests of the Medicare program. This is a discretionary determination by CMS based on the severity of the conduct, the threat to beneficiary safety, and the pattern of behavior.

Revocation reason codes under 42 CFR 424.535 include 22 categories ranging from administrative compliance failures (Reason Code 1: noncompliance with enrollment requirements) to serious misconduct (Reason Code 13: patient harm; Reason Code 19: improper opioid prescribing patterns; Reason Code 21: convicted of healthcare-related offense). Not every revocation results in Preclusion List placement. CMS exercises judgment.

The reenrollment bar under 42 CFR 424.540 was originally 1 to 3 years. It was expanded under subsequent rulemaking to 1 to 10 years for the more serious reason codes, with 10-year bars reserved for the most egregious patterns of fraud or patient harm.

The notice and appeal process for Preclusion List placement is defined at 42 CFR 422.222(a)(3) and (a)(4):

• 60-day advance notice from CMS to the prescriber before placement on the Preclusion List
• Right to request reconsideration within 60 days
• Right to request an Administrative Law Judge hearing if reconsideration is denied
• Right to appeal to the Medicare Appeals Council
• Right to file a civil action in federal district court under 42 USC 405(g)

The forms: CMS-855O, CMS-855I, CMS-855B, CMS-855R, and CMS-855S

Medicare provider enrollment is administered through the Provider Enrollment Chain and Ownership System (PECOS), a CMS-operated database accessible at pecos.cms.hhs.gov. The most common forms for prescriber enrollment are:

Form CMS-855I: Physician/Practitioner Individual Enrollment

Used by physicians, nurse practitioners, physician assistants, certified registered nurse anesthetists, certified nurse midwives, clinical psychologists, and other individual practitioners who bill Medicare directly. CMS-855I requires substantial documentation including state medical license, DEA registration, board certifications, malpractice insurance certificate, and detailed practice information. Processing time at Palmetto GBA Jurisdiction J typically runs 45 to 90 days.

Form CMS-855O: Enrollment Solely to Order and Refer

Used by physicians and eligible professionals who do NOT bill Medicare directly but who write prescriptions, order DMEPOS, order home health, order laboratory tests, or refer patients to other Medicare providers. CMS-855O is significantly lighter than CMS-855I: it requires basic identifying information, NPI, state license, and DEA registration, but does NOT require malpractice insurance documentation, billing privileges, or practice setting information.

Common users of CMS-855O include:

• Hospital-employed physicians whose payments are reassigned to the hospital under CMS-855R
• Hospital residents and fellows who write prescriptions during their training
• Retired physicians who continue to see family members and friends
• Physicians employed by the federal government (VA, IHS, DOD) whose practice is outside the Medicare billing system
• Physicians employed by Indian Health Service or Tribal health programs

The CMS-855O is the most common pathway to satisfy the prescriber enrollment requirement for physicians who do not bill Medicare. There is no fee. There is no audit risk. Processing time is typically 30 to 60 days at Palmetto GBA.

Form CMS-855B: Clinics/Group Practices and Other Suppliers

Used for organizational enrollment of clinics, group practices, hospitals, and other entities that bill Medicare. CMS-855B is filed by the group; individual physicians within the group file CMS-855I or CMS-855R as appropriate.

Form CMS-855R: Reassignment of Benefits

Used when an enrolled individual practitioner reassigns their Medicare benefit payment to an employer. The classic example: a hospital-employed physician who works for Wellstar Hospital Group reassigns payment to Wellstar through CMS-855R. The physician retains individual enrollment under CMS-855I or CMS-855O; the employer receives the payment under the reassignment.

Form CMS-855S: DMEPOS Suppliers

Used for durable medical equipment, prosthetics, orthotics, and supplies suppliers. Subject to additional accreditation requirements under 42 CFR 424.57.

The valid opt-out pathway under 42 CFR 405.405

A physician who does not want to deal with Medicare billing can validly opt out by filing an opt-out affidavit with their Medicare Administrative Contractor. For Georgia physicians, the MAC is Palmetto GBA Jurisdiction J. The opt-out process is governed by 42 CFR 405.405 through 405.450 and implements Section 1802(b) of the Social Security Act.

Key features of the opt-out:

• Binary choice: An opted-out physician cannot accept Medicare payment for any service for two full years.
• Automatic renewal: The opt-out is renewed automatically every two years unless the physician affirmatively cancels.
• Private contracts required: An opted-out physician must enter into a written private contract with each Medicare beneficiary they treat. The contract acknowledges that Medicare will not pay for the services. Section 1802(b)(2) of the Social Security Act and 42 CFR 405.415 govern the content.
• No Medicare billing: The physician cannot submit a claim to Medicare for any service.
• Part D prescriptions still covered: The opted-out physician can still write Part D prescriptions that are covered by Part D plans as long as the opt-out is properly filed and the physician is not on the Preclusion List. This is the key feature for concierge medicine and direct primary care.

The opt-out pathway is common in concierge medicine practices throughout metro Atlanta, in direct primary care practices statewide, and in some specialty practices that prefer cash-pay arrangements. A Georgia retiree who sees a concierge cardiologist in Buckhead can still get blood pressure medication covered under Part D as long as the cardiologist's opt-out is valid.

Revalidation under 42 CFR 424.515: the silent killer of prescriber eligibility

Even a properly enrolled physician can lose Part D prescribing privileges if they fail to revalidate on time. Under 42 CFR 424.515:

• Physicians and most practitioners revalidate every 5 years.
• DMEPOS suppliers revalidate every 3 years.

The revalidation process is initiated by the MAC sending a notice to the address on file in PECOS, typically 90 to 120 days before the revalidation deadline. The physician must respond to the notice and submit updated enrollment information. Failure to respond results in deactivation of Medicare enrollment.

A deactivated physician's prescriptions are rejected at the pharmacy. This is one of the most common causes of unexpected rejection: a physician who has been practicing for 30 years, has not changed practices, and has had no compliance issues whatsoever simply missed a piece of mail. The fix is straightforward: submit revalidation immediately. Reactivation is typically retroactive to the day before deactivation if completed within a short grace period.

For Georgia physicians, common revalidation pitfalls include:

• Moving practice locations without updating PECOS address (mail goes to old address)
• Changing employer (Wellstar to Piedmont, for example) without updating PECOS
• Office manager turnover during the notice window
• Solo practitioners who handle their own administration and miss the deadline
• Physicians who go on extended leave (sabbatical, maternity, military deployment) and miss the notice

The 30-day provisional fill pathway at 42 CFR 423.120(c)(6)(iv)

When a prescription is rejected at the pharmacy because the prescriber is on the Preclusion List (or, in some plan implementations, because the prescriber's enrollment is otherwise not verified), the regulation requires a 30-day provisional fill. The plan must:

1. Provide a 30-day supply of the drug to the beneficiary at the normal cost-sharing
2. Provide written notice to the beneficiary explaining why the prescription was flagged and what steps to take
3. Provide written notice to the prescriber explaining the rejection

The 30-day provisional fill is a one-time event per beneficiary-prescriber-drug combination. After the 30 days, if the beneficiary has not obtained a prescription from a qualified prescriber, the drug cannot be filled.

The provisional fill exists to prevent harm. Many of the drugs subject to this rule are chronic-disease medications (blood pressure, diabetes, cholesterol, mental health, opioids) where abrupt discontinuation is medically inappropriate. Congress and CMS recognized that the prescriber enrollment rule, if applied without a transition period, would put beneficiaries at risk.

In practice, not every pharmacy automatically triggers the provisional fill. Some pharmacies simply reject the prescription and tell the beneficiary to contact their prescriber. If you are in this situation in Georgia, ask the pharmacist specifically about "the 30-day provisional fill under 42 CFR 423.120(c)(6)(iv)" or call your Part D plan's member services line. GeorgiaCares SHIP at 1-866-552-4464 can also help.

Part B drugs versus Part D drugs: a critical distinction

Not every Medicare-covered drug runs through the Part D prescriber enrollment check. There are two parallel drug benefit systems:

Part B drugs

Part B covers drugs that are:

• Administered in a physician's office (infusion drugs, J-code drugs like chemotherapy, immune globulin, biologics)
• Administered in a hospital outpatient setting
• Required for the function of durable medical equipment (insulin for an insulin pump, nebulizer solutions)
• Administered during an inpatient hospital stay (under Part A, not Part B, but the billing follows similar rules)
• Certain vaccines (influenza, pneumococcal, hepatitis B for high-risk beneficiaries)

Part B drugs are billed by the provider (or hospital) directly to Medicare using HCPCS J-codes. The prescriber enrollment requirement applies, but it is essentially automatic because the billing provider is necessarily Medicare-enrolled. The rejection at the pharmacy counter does not arise.

Part D drugs

Part D covers outpatient self-administered drugs filled at retail pharmacy. The Part D plan (whether a standalone Prescription Drug Plan or bundled inside a Medicare Advantage MA-PD) administers the benefit. The pharmacy submits the claim to the plan's pharmacy benefit manager. The PBM verifies the prescriber. The Part D prescriber enrollment requirement applies here.

The distinction matters in practice. A Georgia beneficiary getting Avastin infusions at Emory Winship is on Part B and not subject to the pharmacy-counter rejection. A Georgia beneficiary getting oral oncology pills from Walgreens is on Part D and IS subject to the check.

How the pharmacy point-of-sale check actually works

When you hand your prescription to the pharmacist at CVS Sandy Springs (or any other Georgia pharmacy), the following happens behind the counter, all in under five seconds:

1. The pharmacist enters the prescription into the pharmacy system. This captures the drug, dose, quantity, prescriber NPI, and your insurance information.

2. The pharmacy submits the claim to the PBM. Major PBMs include CVS Caremark, Express Scripts (a Cigna subsidiary), OptumRx (a UnitedHealth subsidiary), Humana Pharmacy, and Anthem IngenioRx. Each Medicare Part D plan contracts with one PBM.

3. The PBM runs eligibility checks. This includes: a. Beneficiary eligibility (current Part D coverage, premium status) b. Formulary check (is the drug on the plan's formulary?) c. Prior authorization check (does this drug require PA?) d. Quantity limit check (does the prescription exceed the plan's quantity limit?) e. Step therapy check (does the beneficiary have to try a preferred drug first?) f. Prescriber check (the prescriber NPI is queried against NPPES and the Preclusion List) g. Drug interaction check h. Cost-sharing calculation

4. The PBM returns a response. Either an approval with cost-sharing information, or a rejection with a reason code. If the rejection is for prescriber status, the reason code is typically NCPDP reject code 89 ("Provider Not Eligible to Prescribe Covered Drugs") or 75 ("Prior Authorization Required") with a sub-code indicating prescriber issue.

5. The pharmacist informs the beneficiary. "I'm sorry, the prescription was rejected. The reason given is that your prescriber is not eligible to prescribe this drug under your Medicare plan."

The 5-second timeline means most beneficiaries never see what is happening. They just hear "rejected." Understanding the mechanics helps you ask the right questions and resolve the issue.

Reassignment of benefits: how hospital-employed physicians work

A large fraction of Georgia physicians are hospital-employed. Emory Healthcare employs thousands of physicians through Emory Healthcare Network (formerly EHCA) and Emory Clinic. Wellstar Health System employs 6,400+ physicians. Piedmont Healthcare employs 1,900+. Northside, Augusta University Health, Atrium Health Navicent, Memorial Health, Phoebe Putney, and Tanner Health all have substantial employed physician groups.

For these physicians, the enrollment structure looks like this:

• The physician files CMS-855I for individual enrollment in Medicare.
• The physician files CMS-855R to reassign Medicare payments to the hospital or health system.
• The hospital files CMS-855B for organizational enrollment.

The physician is individually enrolled. The hospital is the payee. Medicare pays the hospital under the physician's NPI but pursuant to the reassignment.

This structure satisfies the prescriber enrollment requirement because the physician has filed CMS-855I (active enrollment). The physician's NPI is in PECOS. The prescriber check at the pharmacy passes.

A complication arises when a hospital-employed physician moves to a different employer. If the physician's CMS-855R reassignment is not updated, the old employer continues to be the payee on the physician's PECOS record. This can sometimes (depending on PBM configuration) trigger a flag at the pharmacy. The fix is to update the CMS-855R promptly upon employment change.

Mid-level providers: NPs, PAs, CRNAs, and CNMs in Georgia

Georgia has approximately 10,000 nurse practitioners, 3,500 physician assistants, 2,500 certified registered nurse anesthetists, and 500 certified nurse midwives licensed to practice. Each can prescribe under their applicable scope of practice with appropriate physician collaboration.

Each of these mid-level providers must have:

• An individual NPI from NPPES
• Active Medicare enrollment via CMS-855I or CMS-855O
• An active state license

Georgia is not a fully independent practice state for NPs or PAs. NPs and PAs work under a collaborative agreement or supervisory arrangement with a physician. The supervising physician's enrollment status does not substitute for the mid-level provider's individual enrollment. Each mid-level provider must be independently enrolled.

A common source of pharmacy rejection in Georgia is a mid-level provider who has been practicing under a physician's collaborative agreement but has not filed their own CMS-855I or CMS-855O. The pharmacy rejects because the NP or PA prescriber NPI does not appear in PECOS as actively enrolled. The fix is to file CMS-855O.

Six worked examples for Georgia beneficiaries and prescribers

Example 1: Margaret, age 71, Atlanta, prescription rejection at CVS for new PCP

Margaret transferred her primary care to a new physician at Piedmont Medical Group Buckhead in March 2026. The new PCP, Dr. Jane Smith, is a 2025 internal medicine residency graduate who joined Piedmont in February 2026. She is in the process of completing her CMS-855O enrollment but it has not yet been activated in PECOS.

Margaret takes her atorvastatin prescription to CVS on Peachtree Road in May 2026. The pharmacist runs the claim and receives a rejection: "Prescriber not eligible for Part D." Margaret is confused. She has been using CVS for 12 years. She has never had a rejection.

The pharmacist explains the issue. He offers Margaret two options:

1. Pay cash for a 30-day supply ($42) while Dr. Smith completes her enrollment
2. Request a 30-day provisional fill through her Part D plan (UnitedHealthcare Group Medicare Advantage)

Margaret calls UnitedHealthcare member services from the CVS counter. The representative confirms the rejection and authorizes the 30-day provisional fill. Margaret pays her normal $5 copay and leaves with a 30-day supply. The plan also sends written notice to Dr. Smith explaining the issue.

Dr. Smith files CMS-855O the next business day with Palmetto GBA. Processing takes 4 weeks. By mid-June 2026, Dr. Smith's enrollment is active. Margaret's next refill goes through Part D with no issue.

Lessons:

• Margaret was not at fault
• Dr. Smith was not at fault (residents often complete enrollment after starting practice)
• The 30-day provisional fill exists for exactly this scenario
• CMS-855O is the right form for an employed physician who does not bill Medicare directly

Example 2: Robert, age 73, Augusta, opted-out cardiologist

Robert sees Dr. Michael Johnson at Augusta Cardiology Concierge, a concierge practice that charges a $4,500 annual membership fee in addition to per-visit charges. Dr. Johnson is opted out of Medicare under 42 CFR 405.405 and has filed a valid opt-out affidavit with Palmetto GBA. The opt-out is renewed automatically every two years; it is currently valid through 2027.

Robert signed a private contract with Dr. Johnson under Section 1802(b) of the Social Security Act, acknowledging that Medicare will not pay for any cardiology services. Robert pays Dr. Johnson directly for office visits, EKGs, and other in-office services.

Dr. Johnson writes prescriptions for Robert's blood pressure (lisinopril), cholesterol (atorvastatin), and atrial fibrillation (apixaban). All three are covered under Part D. Dr. Johnson's NPI is queried at the pharmacy: the NPI is active in NPPES, the opt-out is valid, and Dr. Johnson is not on the Preclusion List. All three prescriptions are filled without issue.

Lessons:

• A valid opt-out satisfies the prescriber enrollment requirement
• The private contract under Section 1802(b) covers services, not prescriptions
• Part D coverage for prescriptions is preserved
• This is one of the major reasons concierge medicine is sustainable for Medicare-aged patients

Example 3: Linda, age 68, Macon, out-of-state UAB specialist

Linda has a complex cardiac rhythm condition. Her PCP in Macon referred her to a specialized electrophysiologist at the University of Alabama Birmingham (UAB) for ablation and ongoing management. Linda's UAB cardiologist, Dr. Sarah Chen, is enrolled in Medicare through Palmetto GBA (Palmetto's Jurisdiction J covers Alabama too). Dr. Chen prescribes amiodarone for Linda's rhythm management.

Linda takes the amiodarone prescription to Walgreens in Macon. The pharmacist runs the claim. The claim is rejected. The reason code is generic: "Coverage issue."

The pharmacist is puzzled. He calls the PBM. After 15 minutes of investigation, the PBM representative identifies the issue: the PBM's internal cross-reference between NPI and state had a configuration error, treating out-of-state prescribers as unenrolled. The PBM corrects the issue and approves the claim. Linda's amiodarone is filled.

Lessons:

• Medicare enrollment is national, not state-specific
• A physician enrolled with Palmetto Jurisdiction J for Alabama can prescribe for a Georgia patient (and vice versa)
• Sometimes the issue is a PBM configuration error, not the prescriber's enrollment status
• Always ask the pharmacist to call the PBM directly when something looks wrong

Example 4: Charles, age 76, Savannah, Preclusion List rejection

Charles has chronic low back pain following a 2018 spinal fusion. His pain management physician, Dr. Robert Williams, had been prescribing hydrocodone for the past four years. In late 2025, Dr. Williams was revoked under 42 CFR 424.535 Reason Code 19 (improper opioid prescribing patterns) following a CMS audit that found inconsistencies between his prescribing patterns and clinical documentation. Dr. Williams was placed on the Preclusion List effective January 1, 2026.

Charles takes his February 2026 refill of hydrocodone to Publix Pharmacy in Savannah. The claim is rejected. The pharmacist explains that Dr. Williams has been placed on the Preclusion List.

Charles is upset and frightened. Abrupt discontinuation of opioids can produce withdrawal. The pharmacist explains the 30-day provisional fill under 42 CFR 423.120(c)(6)(iv). Charles's Part D plan (Wellcare PDP) authorizes the 30-day supply at normal cost-sharing. The pharmacy provides written notice and Charles's plan also mails Dr. Williams notice.

Charles spends the next two weeks finding a new pain management physician. He sees Dr. Jennifer Davis at Memorial Health Pain Center on March 1, 2026. Dr. Davis reviews the medical history, conducts an evaluation, and writes a new hydrocodone prescription. The new prescription is filled normally because Dr. Davis is properly enrolled and not on the Preclusion List.

Charles also contacts GeorgiaCares SHIP at 1-866-552-4464 for assistance with the transition and to understand his options if he had not been able to find a new prescriber within 30 days.

Lessons:

• Preclusion List placement does happen, including for opioid prescribing patterns
• The 30-day provisional fill exists exactly for this scenario
• Beneficiaries should not panic but should act quickly to find a qualified prescriber
• GeorgiaCares SHIP can help with the transition

Example 5: Patricia, age 82, Columbus, revalidation lapse

Patricia's PCP, Dr. James Brown, has been her primary care physician for 18 years. Dr. Brown's small internal medicine practice in Columbus is solo. His office manager went on family medical leave in early 2026 during a period when his Medicare revalidation notice was sitting in the office. The 90-day deadline came and went. Dr. Brown's enrollment was deactivated effective March 15, 2026.

Patricia takes her blood pressure medication refill to Walmart Pharmacy in Columbus on March 20, 2026. The claim is rejected: "Prescriber enrollment not active." Patricia calls Dr. Brown's office in confusion. The temporary office manager pulls the records and discovers the missed revalidation.

Dr. Brown submits revalidation immediately the same day via PECOS. Palmetto processes the revalidation in 9 business days. The reactivation is retroactive to March 14, 2026 (one day before deactivation) under Palmetto's grace period for late revalidation submissions.

In the meantime, Patricia uses the 30-day provisional fill pathway to get her blood pressure medications. Once Dr. Brown is reactivated, her subsequent fills go through Part D normally. Dr. Brown updates his office procedures to ensure revalidation notices are flagged for immediate response.

Lessons:

• Revalidation lapses happen even to long-established physicians
• Solo practitioners and small practices are at elevated risk
• The fix is straightforward but requires prompt action
• The 30-day provisional fill covers the gap

Example 6: James, age 67, rural Tifton, hospital resident locum tenens

James was admitted to Tift Regional Medical Center in February 2026 with congestive heart failure. He was treated by a locum tenens hospitalist, Dr. Michelle Park, who was covering for the regular hospitalist on maternity leave. Dr. Park is a fully board-certified internal medicine physician who maintains active enrollment through Florida's MAC (First Coast Service Options). When she accepted the locum assignment in Georgia, she did NOT need to file a new enrollment because Medicare enrollment is national.

Dr. Park wrote James's discharge prescriptions, including furosemide, lisinopril, and metoprolol. James was discharged to home. He took the prescriptions to the local independent pharmacy in Tifton.

The pharmacy rejected one of the three prescriptions. The reason: Dr. Park's NPI was queried against the local PBM database, which had a stale extract that did not yet include her recent enrollment update. The other two prescriptions were filled.

The pharmacist called the PBM. The PBM confirmed Dr. Park's active enrollment and approved the rejected prescription. James was given the medication. The pharmacy's PBM database was updated overnight.

Lessons:

• Locum tenens physicians are subject to the same prescriber enrollment rules
• Medicare enrollment is national; a Florida-enrolled physician can prescribe for Georgia patients
• PBM database lag can produce temporary rejections that the pharmacist can resolve by calling
• Independent pharmacies in rural areas may have slower PBM extract cycles than chain pharmacies

How to fix a rejected prescription, step by step

If your Part D prescription is rejected at a Georgia pharmacy for prescriber-related reasons, take these steps in order:

Step 1: Get the rejection reason

Ask the pharmacist for the specific NCPDP rejection code and the reason text. Common reasons include:

• "Prescriber not eligible for Part D" (NCPDP 89 or similar)
• "Prescriber not enrolled in Medicare"
• "Prescriber on Preclusion List"
• "Prescriber NPI not found"

Step 2: Request the 30-day provisional fill

If your prescription is for a chronic medication, ask the pharmacist about the 30-day provisional fill under 42 CFR 423.120(c)(6)(iv). The plan must authorize this in many cases.

Step 3: Contact your Part D plan

Call the member services number on your Part D plan card. Ask the representative to verify the rejection reason and authorize the provisional fill if applicable.

Step 4: Contact your prescriber

Ask your prescriber's office about their Medicare enrollment status. Common issues:

• Hospital-employed physician who has not yet filed CMS-855O
• Solo practitioner who missed a revalidation deadline
• Locum tenens with outdated PBM record
• Prescriber who has been placed on the Preclusion List

Step 5: Help your prescriber file the right form

If the issue is that your prescriber is not enrolled, help them understand they can file CMS-855O at no cost. PECOS access at pecos.cms.hhs.gov. Palmetto GBA Provider Enrollment at 1-855-696-0705.

Step 6: If your prescriber is on the Preclusion List, find a new prescriber

The Preclusion List determination has been made through a process that includes 60-day advance notice and appeal rights. If the prescriber is on the list, their prescriptions cannot be filled regardless of any other intervention. Use your 30-day provisional fill to transition to a new prescriber.

Step 7: Appeal if you believe the rejection is improper

Contact GeorgiaCares SHIP at 1-866-552-4464 for assistance with appeals. The general Part D appeal process under 42 CFR 423 Subpart M applies.

How Georgia health systems handle prescriber enrollment

The major Georgia health systems all maintain credentialing offices that handle Medicare enrollment for their employed physicians. The credentialing office files CMS-855I or CMS-855O on behalf of each new physician, files CMS-855R to reassign benefits, and tracks revalidation deadlines through a credentialing software system.

Best-in-class systems include:

• Emory Healthcare through Emory Clinic credentialing
• Wellstar Health System through Wellstar Medical Group credentialing
• Piedmont Healthcare through Piedmont Clinic credentialing
• Northside Hospital through Northside Healthcare credentialing
• Augusta University Health through AU Medical Associates credentialing
• Atrium Health Navicent through Navicent Medical Group credentialing
• Memorial Health (HCA) through Memorial Medical Group credentialing
• Phoebe Putney Health System through Phoebe Physician Group credentialing

A physician joining one of these systems typically has their CMS-855I or CMS-855O filed within 30 days of hire. The credentialing office tracks revalidation deadlines through a software system (Verity, Echo, Symplr, etc.) and ensures timely renewal.

Solo practitioners and small independent practices are at the greatest risk of enrollment lapses because they often handle administration themselves. The Georgia Medical Group Association (GMGA) offers training and resources on enrollment compliance.

How Medicare Advantage prescriber rules compare to Part D

The Medicare Advantage prescriber enrollment requirement under 42 CFR 422.222 mirrors the Part D requirement at 42 CFR 423.120(c)(6). MA plans cannot pay claims for services or items ordered by a prescriber on the Preclusion List. The 30-day provisional fill applies to MA-PD plans for Part D drugs.

MA plans also have their own network requirements (covered separately in our Georgia Medicare Advantage Network Rules guide), which can produce non-enrollment-related rejections. A physician who is not in the MA plan's network may still write prescriptions that are covered under Part D as long as the prescriber enrollment requirement is satisfied. The two issues are independent.

Common Georgia errors and how to avoid them

Error 1: Assuming hospital employment covers prescriber enrollment. A hospital-employed physician must still individually enroll via CMS-855I or CMS-855O. The hospital's enrollment under CMS-855B does not substitute.

Error 2: Retirees who continue prescribing without maintaining enrollment. Many physicians slow down or retire from full practice but continue to see family members and friends. They must maintain CMS-855I or CMS-855O enrollment to write Part D prescriptions.

Error 3: Residents and fellows not filing CMS-855O. Hospital residents typically write prescriptions during their training. They must file CMS-855O. The teaching hospital's enrollment does not cover them.

Error 4: Moving practices without updating PECOS. A physician who changes employers must update PECOS within 30 days. Failure to update can lead to mail-delivery failures for revalidation notices.

Error 5: Pharmacies that reject without offering the 30-day provisional fill. Some pharmacies are not well-trained on the provisional fill pathway. Ask explicitly.

Error 6: Beneficiaries who don't realize they have appeal rights. The Part D appeal process under 42 CFR 423 Subpart M applies. Contact your Part D plan or GeorgiaCares SHIP.

Error 7: Out-of-state specialists assumed to be the problem. Medicare enrollment is national. An enrolled physician in Florida or Alabama can prescribe for Georgia patients.

Error 8: Mid-level providers without individual NPIs or enrollment. NPs, PAs, CRNAs, and CNMs must each have their own NPI and Medicare enrollment. The supervising physician's enrollment does not substitute.

Error 9: Direct primary care and concierge practices unclear about opt-out status. Ask your concierge or DPC physician directly: "Are you opted out of Medicare?" If yes, your Part D prescriptions are covered. If they have just chosen not to enroll, you may have issues.

Error 10: Provider revalidation lapses. Solo practitioners are at greatest risk. Set calendar reminders 6 months before deadline.

Error 11: Confusing Part B drugs with Part D drugs. Infusion drugs at the office are Part B. Pills from the pharmacy are Part D. Different rules apply.

Error 12: Not knowing about CMS-855O. This is the lighter, free, no-billing-implications form. Many physicians don't know it exists.

Error 13: Missing the 60-day Preclusion List notice. CMS provides 60-day advance notice. If you (or your provider) receives one, act immediately.

Error 14: Letting the 30-day provisional fill expire without transition. If your prescriber is on the Preclusion List, find a new prescriber promptly.

::: accordion

Frequently Asked Questions

What is the Medicare prescriber enrollment requirement?

Under Section 1860D-4(c)(5) of the Social Security Act, added by Section 6405 of the Affordable Care Act (Public Law 111-148) in 2010, prescriptions for Part D drugs must be written by a prescriber who is enrolled in Medicare, has validly opted out, or is not on the CMS Preclusion List. The implementing regulation at 42 CFR 423.120(c)(6) operationalizes the framework.

Why did my prescription get rejected at the pharmacy?

The most common reasons are: (1) your prescriber is not enrolled in Medicare; (2) your prescriber's enrollment was deactivated due to missed revalidation; (3) your prescriber is on the CMS Preclusion List; (4) a PBM database lag has temporarily failed to reflect your prescriber's active status. Ask the pharmacist for the specific rejection reason.

What is the CMS Preclusion List?

The Preclusion List is maintained by CMS Center for Program Integrity under 42 CFR 422.222 and 423.120(c)(6). It identifies prescribers who have been revoked from Medicare and whose underlying conduct CMS determined is detrimental to the program. Prescribers on the list cannot have their Part D or MA prescriptions filled.

What is Form CMS-855O?

CMS-855O is the "Enrollment Solely to Order and Refer" form. It is used by physicians and eligible professionals who do not bill Medicare directly but who write prescriptions, order DMEPOS, order home health, or refer patients. The form is free, has no billing implications, and satisfies the prescriber enrollment requirement.

What is Form CMS-855I?

CMS-855I is the full physician enrollment form for those who bill Medicare directly. It requires substantial documentation including state license, DEA, malpractice insurance, and practice details. Filed via PECOS.

What is the 30-day provisional fill?

Under 42 CFR 423.120(c)(6)(iv), when your Part D prescription is rejected because your prescriber is on the Preclusion List, the plan must provide a one-time 30-day supply at normal cost-sharing and send written notice to you and to the prescriber. This gives you time to find a qualified prescriber.

How do I check if my doctor is enrolled in Medicare?

Use the NPPES NPI Registry at npiregistry.cms.hhs.gov to look up the prescriber's NPI. PECOS does not have a public search, but Medicare's Care Compare tool at medicare.gov/care-compare allows beneficiaries to check certain enrollment statuses. The most reliable check is to ask your prescriber's office directly.

What is PECOS?

PECOS is the Provider Enrollment Chain and Ownership System, the CMS-operated database where provider enrollment information is stored. Providers access PECOS at pecos.cms.hhs.gov to submit and update their enrollment.

How long does CMS-855O enrollment take?

Typically 30 to 60 days at Palmetto GBA Jurisdiction J. Sometimes longer for complex cases or if additional documentation is requested.

My doctor opted out of Medicare. Can my Part D prescriptions still be filled?

Yes, if the opt-out is properly filed and valid (42 CFR 405.405). An opted-out physician can write Part D prescriptions covered by Part D plans. Common in concierge medicine and direct primary care.

What happens if my doctor's enrollment is deactivated for missing revalidation?

Your prescriptions are rejected at the pharmacy until your doctor submits revalidation. Reactivation is typically retroactive within a grace period. The 30-day provisional fill may apply.

Who is the Medicare Administrative Contractor for Georgia?

Palmetto GBA, LLC, headquartered in Columbia, South Carolina, serves as the MAC for Jurisdiction J (Georgia, Alabama, Tennessee). Provider enrollment phone: 1-855-696-0705. Website: palmettogba.com.

Can a nurse practitioner write Part D prescriptions in Georgia?

Yes, if the NP has an individual NPI and is enrolled in Medicare via CMS-855I or CMS-855O. The NP must also be operating under appropriate Georgia scope of practice including a collaborative agreement with a physician.

Can a physician assistant write Part D prescriptions in Georgia?

Yes, if the PA has an individual NPI and is enrolled in Medicare. The PA must also be operating under appropriate Georgia scope of practice with physician supervision.

Can a chiropractor write Part D prescriptions?

No. Chiropractors are not eligible Part D prescribers under federal scope. They cannot write prescriptions for Part D drugs.

Can a dentist write Part D prescriptions?

Yes, dentists who are enrolled in Medicare can write Part D prescriptions for dental-related medications (antibiotics, pain medications) within their scope of practice.

Does the prescriber enrollment requirement apply to over-the-counter medications?

No. OTC medications are not covered under Part D in most cases (some plans cover certain OTCs as supplemental benefits). The prescriber enrollment requirement applies to covered Part D drugs.

Does the requirement apply to controlled substances differently?

Controlled substances are subject to additional DEA regulations beyond the Medicare enrollment requirement. The DEA Form 222 process for Schedule II drugs is separate. A prescriber must have both Medicare enrollment and an active DEA registration to write controlled substance prescriptions covered under Part D.

What if my doctor refuses to file CMS-855O?

You can find a different prescriber. CMS-855O is voluntary; if a physician chooses not to enroll, their Part D prescriptions cannot be filled. Most physicians will agree to file once they understand the implications for their Medicare patients.

What if I am traveling outside Georgia and need a prescription?

Medicare enrollment is national. An enrolled physician in any state can write prescriptions that are covered under your Georgia Part D plan, subject to your plan's network rules for travel.

Can I appeal a Preclusion List rejection?

You can request an appeal of the underlying drug coverage rejection under your Part D plan's appeal process (42 CFR 423 Subpart M). However, if the reason for rejection is that your prescriber is on the Preclusion List, the appeal will not change the Preclusion List determination. You need a new prescriber.

What is the difference between exclusion and the Preclusion List?

Exclusion is the broader sanction administered by the HHS Office of Inspector General (OIG). Excluded providers cannot bill Medicare, Medicaid, or any federal healthcare program. The Preclusion List is more narrowly focused on prescriber eligibility under Medicare Parts C and D. An excluded provider will typically also be on the Preclusion List.

Where can I look up the Preclusion List?

The Preclusion List is not publicly published in the same way as the OIG Exclusion List. CMS maintains the list and shares it with Part D plan sponsors and PBMs. Prescribers who have been placed on the list receive direct notice. Beneficiaries can ask their Part D plan if a specific prescriber is on the list.

How long does a Preclusion List placement last?

Until the underlying revocation reenrollment bar expires and any other CMS criteria are satisfied. Reenrollment bars range from 1 to 10 years under 42 CFR 424.540.

Where can I get help in Georgia?

GeorgiaCares SHIP at 1-866-552-4464 offers free Medicare counseling. Medicare at 1-800-MEDICARE handles general questions. Atlanta Legal Aid at 404-377-0701 and Georgia Legal Services at 1-800-498-9469 provide free legal help. Brevy at brevy.com publishes regularly updated guides. :::

The relationship between Medicare exclusion, the Preclusion List, and state licensure

It is worth distinguishing among several different sanctions that can affect a prescriber's ability to write Part D prescriptions in Georgia.

HHS Office of Inspector General (OIG) exclusion

The OIG List of Excluded Individuals and Entities (LEIE) is the broadest sanction. Under Section 1128 of the Social Security Act, the OIG can exclude individuals and entities from federal healthcare program participation. Excluded providers cannot bill Medicare, Medicaid, TRICARE, the VA, or any federal program. Excluded providers' prescriptions also cannot be filled under Part D because their NPI is flagged in the federal database systems. The LEIE is publicly searchable at exclusions.oig.hhs.gov. Exclusion reasons include felony convictions, healthcare fraud, controlled substance offenses, license revocation in another state, and program-related misconduct.

CMS Preclusion List

Narrower than exclusion. The Preclusion List specifically addresses Medicare Parts C (Medicare Advantage) and D prescriber eligibility under 42 CFR 422.222 and 423.120(c)(6). A prescriber on the Preclusion List may or may not also be on the OIG LEIE. The Preclusion List is not publicly searchable but is shared with Part D plan sponsors and PBMs through CMS data feeds. Beneficiaries can ask their Part D plan whether a specific prescriber is on the list.

Provider revocation under 42 CFR 424.535

Revocation removes a provider from Medicare enrollment under any of 22 reason codes. A revoked provider cannot bill Medicare. Revocation can lead to Preclusion List placement (depending on the underlying conduct) but does not automatically do so.

Georgia Composite Medical Board action

The state medical board can suspend or revoke a Georgia medical license under Georgia Code Title 43 Chapter 34. A suspended or revoked Georgia license typically results in immediate Medicare administrative action. A provider whose Georgia license is revoked cannot legally practice in Georgia regardless of federal status.

DEA registration restriction

The Drug Enforcement Administration can suspend or revoke a provider's DEA registration under 21 USC 824. A restricted DEA registration means the provider cannot prescribe controlled substances. DEA restriction is one of the 22 reason codes for Medicare revocation under 42 CFR 424.535 (Reason Code 12).

The practical implication for Georgia beneficiaries: if your provider has been the subject of any of these sanctions, your Part D prescriptions written by that provider will likely be rejected. The fix is to transition to a different provider who is in good standing across all of these systems.

What happens during the 60-day Preclusion List notice period

The 60-day advance notice required under 42 CFR 422.222(a)(3) before Preclusion List placement is a critical due process element. Here is what typically happens:

Day 0: CMS sends written notice

The notice is sent to the prescriber's address on file in PECOS. The notice identifies the specific basis for proposed Preclusion List placement, the underlying conduct, the supporting evidence, and the prescriber's appeal rights.

Days 1 through 60: Prescriber response window

The prescriber has 60 days to submit a written rebuttal to CMS through the Medicare Administrative Contractor. The rebuttal should include:

• Documentation refuting the factual basis
• Evidence of corrective action
• Witness statements
• Expert opinions
• Practice records

The prescriber can also request additional time for response, although extensions are not guaranteed.

Days 60 through 90: CMS review and decision

CMS reviews the rebuttal and issues a final decision. The decision either places the prescriber on the Preclusion List effective on a specific date or declines to do so.

Days 90 through 150: Reconsideration window

If CMS proceeds with placement, the prescriber can request reconsideration within 60 days of the final decision. Reconsideration is conducted by a different CMS official who reviews the file de novo.

After reconsideration denial: ALJ hearing

The prescriber can request an Administrative Law Judge hearing under 42 CFR 405.1000 et seq. The ALJ hearing is conducted by the HHS Office of Medicare Hearings and Appeals (OMHA). Decision typically issues within 90 to 180 days.

After ALJ denial: Appeals Council

The prescriber can request review by the Medicare Appeals Council, a division of the SSA's Departmental Appeals Board.

After Appeals Council: federal district court

The prescriber can file a civil action under 42 USC 405(g) in federal district court. For Georgia prescribers, this is typically the Northern, Middle, or Southern District of Georgia.

During this entire appeal process, the prescriber's name remains on the Preclusion List unless the appeal results in reversal. Their prescriptions continue to be rejected at the pharmacy.

Interaction with Medicaid and dual eligibility

For Georgia residents who are dually eligible for Medicare and Medicaid, the prescriber enrollment rules interact with state Medicaid rules. Georgia Medicaid (administered by the Department of Community Health) has its own provider enrollment process under 42 CFR 455.410 and Georgia State Plan provisions. The Georgia Medicaid Management Information System (GAMMIS), operated by Gainwell Technologies, maintains the Medicaid provider directory.

For a dually eligible Georgia resident, prescriptions are typically routed through Part D first (because Medicare is the primary payer for outpatient drugs). If Part D rejects for prescriber-enrollment reasons, the prescription cannot be filled by Medicaid as a backstop unless the rejection is for a non-prescriber reason. The prescriber enrollment requirement under Section 1860D-4(c)(5) supersedes Medicaid pharmacy benefit administration for Part D drugs.

For Georgia Medicaid-covered drugs that are not covered by Part D (certain over-the-counter medications, some compound preparations, certain non-Part D drugs covered by Medicaid only), the Georgia Medicaid prescriber enrollment rules apply instead. A provider who is not enrolled in Medicare may still be enrolled in Georgia Medicaid, and vice versa. Enrollment in one system does not substitute for enrollment in the other.

How the rule affects telemedicine prescribers in Georgia

Telemedicine adoption in Georgia accelerated during the COVID-19 public health emergency and has remained substantial since. Georgia residents now routinely receive care from telemedicine prescribers based in other states or operated by national telemedicine platforms.

The prescriber enrollment rule applies to telemedicine prescribers the same way it applies to in-person prescribers. The telemedicine prescriber must:

1. Have an active NPI in NPPES
2. Be enrolled in Medicare via CMS-855I or CMS-855O, OR have a valid opt-out
3. Not be on the CMS Preclusion List

Major national telemedicine platforms (Teladoc Health, Amwell, MDLive, Doctor on Demand, Hims & Hers, Roman, Cerebral, and others) generally ensure that their network prescribers are properly enrolled because Medicare beneficiaries are a meaningful market segment. However, smaller telemedicine platforms or platforms that primarily serve non-Medicare populations may have prescribers who are not enrolled. A Georgia Medicare beneficiary using telemedicine should ask the platform directly whether prescribers are Medicare-enrolled before relying on the service for prescription needs.

The DEA's Special Registration for Telemedicine, established under the Ryan Haight Online Pharmacy Consumer Protection Act of 2008 (Public Law 110-425) and modified by subsequent DEA rulemaking, is separate from the Medicare enrollment requirement. A telemedicine prescriber may have appropriate DEA registration but lack Medicare enrollment, and vice versa. Both are required for controlled substance prescriptions covered under Part D.

Practical guidance for Georgia prescribers

If you are a Georgia physician, nurse practitioner, physician assistant, or other eligible prescriber, the practical takeaways are:

1. File CMS-855O even if you don't bill Medicare. The form is free, takes a few hours to complete, and avoids prescription rejections for your Medicare patients. The CMS-855O is available at cms.gov/medicare-provider-enrollment-and-certification.

2. Use PECOS for all submissions. Paper forms are accepted but PECOS at pecos.cms.hhs.gov is faster and provides confirmation.

3. Track your revalidation deadline. Set calendar reminders 6 months and 3 months before the 5-year mark. Update PECOS promptly when you move offices, change employers, or change contact information.

4. If you receive a 60-day Preclusion List notice, respond immediately. Engage healthcare counsel. The reconsideration window is 60 days and the substantive standard is meaningful.

5. If you opt out of Medicare, ensure your opt-out is properly filed with Palmetto GBA. Use 42 CFR 405.405 and ensure your private contracts with patients comply with 42 CFR 405.415 and Section 1802(b).

6. Help your patients understand the framework. A 30-second explanation prevents a great deal of pharmacy frustration.

Working with Brevy and Georgia resources

Brevy publishes regularly updated guides at brevy.com on Medicare prescriber enrollment, Part D coverage, prior authorization, appeals, and related topics. We do not provide legal, medical, or tax advice. We provide research-grade content in plain language so that Georgia families and providers can make informed decisions.

For free Medicare counseling, contact the GeorgiaCares State Health Insurance Assistance Program at 1-866-552-4464. SHIP counselors can help with prescription rejections, appeals, and plan selection.

For provider enrollment questions, contact Palmetto GBA at 1-855-696-0705 or visit palmettogba.com.

For legal questions about Medicare appeals or Preclusion List disputes, contact the Center for Medicare Advocacy at 1-860-456-7790 or local Georgia legal aid resources.

Disclaimers

This article is for educational purposes only and does not constitute legal, medical, or tax advice. Provider enrollment rules are subject to change. The information in this article reflects rules in effect as of May 2026. Always verify current rules at cms.gov, palmettogba.com, and medicare.gov before making decisions.

Brevy is not affiliated with the Centers for Medicare and Medicaid Services, the Social Security Administration, the Department of Health and Human Services, Palmetto GBA, or any state agency. Brevy is an eldercare research and information company. We accept no compensation from insurance carriers, pharmacy benefit managers, providers, or other parties.

Information about Georgia health systems, pharmacies, and providers reflects publicly available information as of the publication date. Provider participation and contact information may change. Verify current information with the relevant organization before relying on it.

This article was researched and written by the Brevy Care Team and is pending final editorial review.

::: cta

Get help with Medicare prescriber issues in Georgia

Federal agencies

• Medicare: 1-800-MEDICARE (1-800-633-4227). General Medicare and Part D questions. medicare.gov
• Social Security Administration: 1-800-772-1213. Medicare enrollment. ssa.gov
• CMS Provider Enrollment: 1-866-484-8049. General provider enrollment questions. cms.gov
• NPPES Help Desk: 1-800-465-3203. National Provider Identifier registry. npiregistry.cms.hhs.gov

Georgia state agencies

• GeorgiaCares SHIP: 1-866-552-4464. Free Medicare counseling. georgiacares.org
• Georgia Department of Community Health, Medicaid Member Services: 1-866-211-0950. Medicaid and dual-eligible questions
• Georgia Composite Medical Board: 404-656-3913. Physician licensure. medicalboard.georgia.gov
• Georgia Board of Nursing: 478-207-2440. APRN licensure
• Georgia Board of Pharmacy: 478-207-2440. Pharmacy licensure

Medicare Administrative Contractor

• Palmetto GBA Provider Enrollment: 1-855-696-0705
• Palmetto GBA Customer Service: 1-866-238-9650
• Website: palmettogba.com
• Mailing address: Palmetto GBA, J-J Provider Enrollment, P.O. Box 100190, Columbia, SC 29202

Legal and consumer assistance

• Atlanta Legal Aid Society: 404-377-0701. Free civil legal services. atlantalegalaid.org
• Georgia Legal Services Program: 1-800-498-9469. Free legal services for low-income Georgians outside metro Atlanta. glsp.org
• Center for Medicare Advocacy: 1-860-456-7790. National Medicare appeals nonprofit. medicareadvocacy.org
• Medicare Rights Center: 1-800-333-4114. National consumer service. medicarerights.org

Additional resources

• Eldercare Locator: 1-800-677-1116. eldercare.acl.gov
• 211 Georgia: Dial 211 for community resources
• National Council on Aging: 1-800-794-6559. ncoa.org

Brevy

Brevy at brevy.com publishes regularly updated guides on Medicare, Medicaid, VA benefits, and caregiving across all 50 states. Our guides are free, advertising-free, and reviewed annually. :::