Medicare in South Dakota: Plans and Coverage (2026)

Medicare in South Dakota runs on federal rules, but the state adds free SHIP counseling through the Division of Insurance and its own Medicaid process for the Medicare Savings Programs. This guide covers every part of Medicare for South Dakota residents in 2026: what it costs, what plans exist, and how to get help paying.1,2

In This Guide

• Key Takeaways
• Original Medicare: Parts A and B
• Medicare Advantage in South Dakota (Part C)
• Medicare Part D: Prescription Drugs
• Medigap in South Dakota
• Help Paying for Medicare in South Dakota
• Medicare Enrollment Periods
• Free Medicare Help: South Dakota SHIP
• Frequently Asked Questions

About these numbers: The premiums and deductibles below come from CMS for calendar year 2026, effective January 1. Medicare costs change every year. For the most current figures, contact Medicare at 1-800-633-4227 (1-800-MEDICARE) or South Dakota SHIP through consumer.sd.gov.

Original Medicare: Parts A and B

Original Medicare is run directly by the federal government and has two parts. The mechanics and costs are identical in South Dakota and every other state.

Part A (Hospital Insurance)

Part A covers inpatient hospital stays, limited skilled nursing facility care, hospice, and some home health care.3

The hospital deductible rose $60 from 2025, to $1,736 per benefit period.3 A benefit period starts the day you're admitted and ends 60 days after you leave the hospital or SNF. Get readmitted after that and the deductible applies again.

Part B (Medical Insurance)

Part B covers doctor visits, outpatient care, preventive services, durable medical equipment, and mental health care. It doesn't cover routine dental, vision, or hearing.3

• Monthly premium: $202.90 (higher if your 2024 income was above $109,000 single or $218,000 married, under the income-related adjustment)3
• Annual deductible: $2833
• After the deductible: you pay 20% of the Medicare-approved amount for most services3

Part B is technically optional, but nearly everyone signs up. Delay past your enrollment window without other creditable coverage and you'll owe a late penalty of 10% for every 12 months you could have had it, for as long as you keep Part B.5

Medicare Advantage in South Dakota (Part C)

Medicare Advantage plans are an alternative to Original Medicare, sold by private insurers. They cover everything Parts A and B do, except hospice, which Original Medicare keeps covering. Most bundle in Part D drug coverage along with extras like dental, vision, and hearing.6

South Dakota residents in the Sioux Falls and Rapid City areas generally see the widest plan selection. Rural counties across the state tend to have fewer choices, and some areas may have very limited Medicare Advantage availability. Plan options, networks, and prices change every year and differ by county, so compare what's available at your address before you decide.

How These Plans Work

• You keep paying your Part B premium ($202.90) on top of any plan premium. The CMS estimate for the average Medicare Advantage premium in 2026 is about $14 a month, and many plans charge $0 extra.3,6
• Plans run on networks (HMO or PPO). Confirm your doctors and hospitals are in-network before you enroll.
• Plans usually require prior authorization for certain services, which Original Medicare generally does not.6
• Every plan caps your annual in-network out-of-pocket spending (federally limited to $9,250 in 2026; many plans set it lower). Original Medicare has no such cap.6

Use the Medicare Plan Finder at medicare.gov to compare plans by ZIP code. Enter your doctors and prescriptions and it shows which plans cover them and your estimated cost. A South Dakota SHIP counselor can help you work through the results for free.

Medicare Part D: Prescription Drugs

Part D covers outpatient prescription drugs. You can get it as a standalone plan paired with Original Medicare, or built into a Medicare Advantage plan.

The Inflation Reduction Act eliminated the old coverage gap, so that higher-cost middle stage is gone.4 Part D now moves through three phases:

1. Deductible: you pay full price until you meet your plan's deductible (up to $615 in 2026).7
2. Initial coverage: you pay copays or coinsurance while your plan and drug makers cover the rest.
3. Catastrophic: once your out-of-pocket spending reaches $2,100, you pay $0 for covered drugs the rest of the year.4

That $2,100 cap is the number that matters most in Part D. It was $2,000 in 2025 and rises with drug-spending growth. The average standalone Part D premium for 2026 is about $40 to $50 a month, though actual plan premiums vary widely.3 Every plan also has to offer the Medicare Prescription Payment Plan, which lets you spread your out-of-pocket drug costs into capped monthly payments across the year instead of paying in full at the pharmacy.4 People who qualify for Extra Help often pay much less, sometimes nothing.

For a deeper look at how the redesigned Part D benefit works, see our guide to Medicare Part D drug coverage.

Medigap in South Dakota

Medigap policies are sold by private insurers to fill the gaps in Original Medicare: the deductibles, coinsurance, and copays. They work only with Original Medicare, never with Medicare Advantage.

South Dakota offers the federally standardized plans, labeled A through N, including high-deductible Plan F and Plan G, regulated under state insurance law. Plans C and F are closed to anyone who became Medicare-eligible on or after January 1, 2020. Plan G is the popular choice for people newly eligible: it covers the Part A deductible, Part A and Part B coinsurance, and skilled nursing coinsurance, leaving only the $283 Part B deductible on you.8,3

Your strongest opening is the federal Medigap Open Enrollment Period, the six months that begin when you're 65 and enrolled in Part B. During that window an insurer must sell you any plan at the standard rate regardless of your health.8 Outside it, South Dakota insurers may use medical underwriting, meaning they can review your health, charge more, or decline you.

South Dakota does not have a state law extending guaranteed-issue Medigap rights to under-65 beneficiaries on Medicare through disability, so access to Medigap before 65 depends on what individual insurers are willing to offer.

Medigap or Medicare Advantage?

You can't hold both. Choose Medigap and you stay on Original Medicare with the freedom to see any provider who takes Medicare nationwide, at a higher monthly premium. Choose Medicare Advantage and you trade some of that freedom for a network and a lower upfront cost. For a side-by-side look at the trade-off, see our guide to Original Medicare vs. Medicare Advantage.

Help Paying for Medicare in South Dakota

If you're on a fixed income, two programs can cut your Medicare costs sharply.

Medicare Savings Programs

South Dakota administers its Medicare Savings Programs through SD DSS Medicaid. South Dakota uses the standard federal income tiers, with its own QI-1 label for the 120-135% FPL tier.2

QMB is the most generous, covering your Part B premium plus your deductibles and coinsurance, and federal law bars providers from billing a QMB enrollee for that cost-sharing.2 For all three programs the 2026 resource limit is $9,950 for one person and $14,910 for a couple.2 The income figures are tied to the Federal Poverty Level and update each April. You apply through SD DSS, and SHIP counselors can walk you through the application. Enrolling in any of these programs automatically qualifies you for Extra Help with Part D.2

Extra Help for Part D

Extra Help, also called the Low-Income Subsidy, pays Part D premiums, deductibles, and copays for people with limited income and resources.9 Since 2024 the partial-subsidy tier is gone, so everyone who qualifies now gets the full subsidy.

• Income limit (2026): up to about $1,995 a month for an individual, $2,705 for a couple9
• Resource limits: $16,590 for an individual, $33,100 for a married couple9
• If you qualify for QMB, SLMB, or QI-1, you're enrolled in Extra Help automatically

Apply through Social Security at ssa.gov/benefits/medicare/prescriptionhelp.html or call 1-800-772-1213.9

Medicare Enrollment Periods

Miss a deadline and you can face coverage gaps or permanent penalties. These dates are federal and the same in South Dakota as everywhere else.10

Changes you make during Annual Open Enrollment take effect the following January 1. If you're already getting Social Security before 65, you're enrolled in Parts A and B automatically; if not, you sign up yourself through Social Security.10 If you're still working past 65 with health coverage from a current employer, you can delay Part B without penalty and use an eight-month Special Enrollment Period to sign up after that job or coverage ends; miss that window and you wait for the General Enrollment Period (January 1 to March 31) and may owe a late penalty.11

Free Medicare Help: South Dakota SHIP

You don't have to figure this out alone, and you don't have to pay a broker. South Dakota's State Health Insurance Assistance Program (SHIP) provides free, unbiased Medicare counseling through trained counselors coordinated by the South Dakota Division of Insurance and the Attorney General's Consumer Protection office. Counselors don't sell insurance.1

A South Dakota SHIP counselor can help you:

• Understand your Medicare options and what each part covers
• Compare Medicare Advantage, Part D, and Medigap plans side by side
• Apply for Medicare Savings Programs and Extra Help
• Sort out claims, denials, and appeals

Start at consumer.sd.gov/fastfacts/medicare.aspx for counselor contacts, or call 1-800-MEDICARE to get connected to local SHIP help in South Dakota.1

Key South Dakota Medicare Contacts

Learn More

Find personalized help with Medicare in South Dakota at brevy.com.

The information on Brevy.com is for educational purposes only and is not a substitute for professional legal, financial, or medical advice. Rules vary by state and program and change frequently. Always verify with the relevant agency or a qualified professional. Brevy is not a law firm, financial advisor, or healthcare provider.