# Unhappy With Your Medicare Advantage Plan? You Get One Do-Over Between January 1 and March 31

- Link: https://fantasyfrontierfun.com/medicare-advantage-open-enrollment-period/
- Published: 2026-11-13T18:44:06+00:00
- Author: The Health Advocate Editorial Team

January is when Medicare Advantage plans meet real life. A specialist’s office says
it is no longer in network. A prescription costs twice what it did in December. 
A referral that used to be easy now needs prior approval.

If that sounds familiar, you have a second chance. Every year from **January 1 to
March 31**, people in Medicare Advantage plans can make one change. It is called
the Medicare Advantage Open Enrollment Period, and many people never hear about 
it until it has closed.

### Key takeaways

 * If you are in a Medicare Advantage plan on January 1, you can make **one** change
   by March 31.
 * You can switch to another Medicare Advantage plan, or go back to Original Medicare
   and add a Part D drug plan.
 * It cannot be used to join Medicare Advantage from Original Medicare or to swap
   stand-alone drug plans.
 * Before leaving Medicare Advantage, check whether a Medigap insurer can ask you
   health questions.

## Who can use the January to March window

 * People enrolled in a Medicare Advantage plan on January 1.
 * People who are new to Medicare and joined a Medicare Advantage plan when they
   first became eligible. They can use this kind of change during their first three
   months of having Medicare.

If you have Original Medicare, with or without a stand-alone drug plan, this window
is not for you. Your main yearly chance to change is the fall open enrollment from
October 15 to December 7, unless a special enrollment period applies.

## What you can do

 * **Switch to a different Medicare Advantage plan**, with or without drug coverage.
 * **Leave Medicare Advantage and return to Original Medicare**, and join a stand-
   alone Part D drug plan at the same time.

## What you cannot do

 * Move from Original Medicare into a Medicare Advantage plan.
 * Switch from one stand-alone Part D plan to another if you have Original Medicare.
 * Make more than one change. Once you use it, the window is closed for the year.

Because you only get one change, take the time to compare carefully instead of switching
to the first plan you see advertised.

## When the new coverage starts

Your new plan generally starts on the first day of the month after it receives your
request. If you enroll on February 10, for example, the new coverage usually begins
March 1. Until then, keep using your current plan and keep its card.

If you join a new Medicare Advantage plan or a new Part D plan, you are automatically
disenrolled from the old one. You do not need to cancel it separately. If you are
returning to Original Medicare without joining a new plan, contact your current 
plan or 1-800-MEDICARE to disenroll.

## Five signs it may be worth using your one change

 1. **A key doctor or hospital is out of network.** Check the provider directory and
    call the office to confirm, because directories are not always current.
 2. **A medicine you rely on is not on the drug list** or moved to a much higher cost
    tier.
 3. **You keep running into prior authorization or referral rules** that delay care
    you need.
 4. **Your costs are higher than you planned.** Look at the plan’s maximum out-of-pocket
    amount, not just the monthly premium.
 5. **You spend part of the year in another state** and your plan’s network does not
    travel with you.

## The Medigap catch: read this before you leave Medicare Advantage

Original Medicare has no yearly limit on what you pay out of pocket. Many people
who go back to Original Medicare want a Medicare Supplement (Medigap) policy to 
cover those gaps. That is where people get caught.

Outside certain protected situations, Medigap insurers in most states can ask health
questions, charge more, or decline to sell you a policy. You have a federal **guaranteed
issue right** in some cases, for example:

 * you joined a Medicare Advantage plan when you first became eligible for Medicare
   at 65 and you leave within the first 12 months; or
 * you dropped a Medigap policy to try Medicare Advantage for the first time and
   you leave within 12 months.

A handful of states, such as New York and Connecticut, give broader Medigap protections.
Your State Health Insurance Assistance Program can tell you what applies where you
live.

**Practical rule:** if you are not sure you can get Medigap, apply for the Medigap
policy and get approved _before_ you leave your Medicare Advantage plan. Ask for
the approval in writing and pick a start date that matches.

## Step-by-step checklist

 1. Write down what is not working in your current plan.
 2. List your doctors, hospitals, pharmacy and every medicine with its dose.
 3. Compare plans in the Medicare Plan Finder at Medicare.gov. Look at the drug costs
    for your exact medicines, the network, the maximum out-of-pocket amount and the
    star rating.
 4. If you are thinking about Original Medicare, check Medigap prices and whether you
    would have to answer health questions.
 5. Call the offices of your most important doctors to confirm they accept the new 
    plan.
 6. Enroll through Medicare.gov, 1-800-MEDICARE (1-800-633-4227, TTY 1-877-486-2048)
    or the plan directly, and save the confirmation number.
 7. Watch for the new card and welcome packet, and do not stop using your current plan
    until the new one starts.

## Where to get free, unbiased help

Every state has a State Health Insurance Assistance Program (SHIP) with trained 
counselors who do not sell insurance. You can find yours at shiphelp.org. Be cautious
with unsolicited calls or ads promising extra benefits for switching: Medicare does
not call people to sell plans.

## Frequently asked questions

### I switched plans during the fall. Can I switch again in January?

Yes, if you are in a Medicare Advantage plan on January 1. The January to March 
window is separate from fall open enrollment.

### Will switching affect care I am getting right now?

It can. A new plan may need its own prior approvals and may have a different network.
If you are in the middle of treatment, ask the new plan how it handles ongoing care
before you switch.

### What if I miss March 31?

You would generally need a special enrollment period, such as moving, losing other
coverage, getting Extra Help, or switching to a 5-star plan. Otherwise, your next
chance is October 15 to December 7.

_This article is general information, not legal or insurance advice. Rules have 
exceptions and state differences; confirm your options with Medicare, your plan 
or a SHIP counselor before making a change._