You're already in a Medicare Advantage plan, it's January, and the plan you picked back in the fall isn't working out. Can you switch now? Yes. From January 1 through March 31, the Medicare Advantage Open Enrollment Period gives people who are already in an Advantage plan one chance to move to a different plan or drop back to Original Medicare.

In This Guide

What the Medicare Advantage Open Enrollment Period Lets You Do

So here's what this window actually gives you: one change, made once, sometime between January 1 and March 31, not unlimited plan-hopping. Make your move, and you're set until the next fall. Medicare's own rules spell out the two moves you're allowed.

You can do one of these:

  • Switch to a different Medicare Advantage plan, whether or not it includes drug coverage.
  • Drop your Advantage plan, go back to Original Medicare, and sign up for a standalone Part D prescription drug plan at the same time.

That's the menu. Pick one. And because Medicare only counts one election here, the last thing you want is to switch on a whim in January and then find a better plan in March with no moves left.

Who Can Use the Medicare Advantage Open Enrollment Period

The Medicare Advantage Open Enrollment Period is only for people who are already in a Medicare Advantage plan. That's the whole gate. If you're sitting in Original Medicare and you'd like to jump into an Advantage plan, this isn't the window that lets you do it.

There's one more group who gets it: people brand new to Medicare. If you sign up for Medicare and start out in an Advantage plan, you get this same one-time change during your first three months with the plan, even if those months land outside the January-to-March window.

How It Differs From the Fall Annual Election Period

This is where a lot of people get tangled up, because Medicare runs two different windows with almost the same name. The fall one is the Annual Election Period, also called Medicare Open Enrollment, and per Medicare it runs October 15 to December 7. The one we're talking about here, in the new year, is the Medicare Advantage Open Enrollment Period (MA OEP for short). They are not the same, and they don't do the same things.,

Feature Fall Annual Election Period Medicare Advantage Open Enrollment Period
When it runs October 15 to December 7 January 1 to March 31
Who can use it Anyone with Medicare Only people already in a Medicare Advantage plan
How many changes Change as often as you like; the last choice before December 7 is the one that sticks One change, and that's it
What you can do Join, switch, or drop an Advantage plan; add, switch, or drop a Part D plan Switch Advantage plans, or drop to Original Medicare and add Part D

The short version: the fall window is the big one, open to everyone, where most people make their choices for the coming year. The winter window is a narrower do-over, and only for people who are already in an Advantage plan and want to reconsider.

Going Back to Original Medicare: Don't Forget Part D

Say you use this window to leave your Advantage plan and go back to Original Medicare. Medicare lets you sign up for a standalone Part D prescription drug plan at the same time, which is the whole point of calling it a coordinating change. Don't let that step slide. Original Medicare on its own doesn't include drug coverage, so if you drop your Advantage plan and forget to pick up a Part D plan, you can be left paying full price at the pharmacy.

A lot of people leaving an Advantage plan also look into a Medigap policy, which helps with the out-of-pocket costs Original Medicare leaves on the table. The rules for buying one vary quite a bit, so read up on how it works in your state before you make the switch, not after.

Why the Marketing Calls Stop During This Window

Here's a small mercy built into the rules. Once the Medicare Advantage Open Enrollment Period starts, plans are barred from knowingly targeting you or sending you unsolicited marketing to nudge you into switching. That prohibition sits right in Medicare's marketing rules.

That doesn't mean the phone goes completely silent. Plans can still market to other groups, like people newly aging into Medicare who haven't chosen yet. What they can't do is work the existing-member lists to pull you out of one plan and into another during this window. So if you get a slick "switch now" pitch aimed at you as a current member in February, that's exactly the kind of outreach the rule is meant to stop.

Frequently Asked Questions

Can I switch Medicare Advantage plans in January?

Yes. If you're already in a Medicare Advantage plan, the Medicare Advantage Open Enrollment Period lets you switch to a different Advantage plan any time from January 1 through March 31. You get one change, so make it count.

Can I switch from Original Medicare to a Medicare Advantage plan during this window?

No. This window is only for people already enrolled in a Medicare Advantage plan. If you have Original Medicare and want to move to an Advantage plan, you'd use the fall Annual Election Period or a Special Enrollment Period, not the winter Advantage window.

What's the difference between this and the fall Open Enrollment?

The fall Annual Election Period (October 15 to December 7) is open to everyone with Medicare and lets you make almost any change. The Medicare Advantage Open Enrollment Period (January 1 to March 31) is only for current Advantage members and allows a single change.

If I drop my Advantage plan, can I still get drug coverage?

Yes. When you use this window to go from a Medicare Advantage plan back to Original Medicare, you're allowed to sign up for a standalone Part D prescription drug plan at the same time. Do it right away so you're not left without drug coverage.

How many times can I change plans during the MA OEP?

Once. The Medicare Advantage Open Enrollment Period gives you a single election between January 1 and March 31, so a change you make in January uses up your one move for the window.

Learn More

MedicareMedicare Enrollment Periods: When to Sign UpWhen to sign up for Medicare without a lifelong penalty: the 7-month Initial Enrollment Period, working past 65, the GEP, and what each late penalty costs. MedicareMedicare Special Enrollment Periods: Which One Is YoursThe life events that let you enroll in or switch Medicare outside the usual windows: retiring past 65, losing Medicaid, moving, a plan exit, and the COBRA trap. MedicareOriginal Medicare vs. Medicare AdvantageCompare original Medicare vs Medicare Advantage on cost, networks, the $9,250 cap, and switching back. A neutral 2026 side-by-side to help you choose.

Find personalized help deciding whether to switch your Medicare Advantage plan 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.

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Brevy Care Team

Expert eldercare guidance from Brevy's team of healthcare professionals and researchers.