Yes, you can switch from Medicare Advantage to Original Medicare, but only during specific windows

You are not locked into a Medicare Advantage plan. You can return to Original Medicare (Part A and Part B) during the Annual Enrollment Period, which runs from October 15 to December 7 each year. Your coverage change takes effect January 1. You can also switch outside this window if you may have access to for a Special Enrollment Period — a shorter window triggered by specific life events or plan changes.

The catch is timing. If you miss the Annual Enrollment Period and do not may have access to for a Special Enrollment Period, you are stuck in your current plan until the next October. Starting the switch process early — in September — gives you time to research plans and understand what you are leaving behind.

Key Takeaways

  • The Annual Enrollment Period runs October 15 to December 7 each year, and any switch you make takes effect January 1.
  • You can switch outside this window only if you have a may have access to event, such as moving out of your plan's service area, losing employer coverage, or your plan being discontinued.
  • When you switch back to Original Medicare, you will need to enroll in a separate Part D prescription drug plan and may want to buy a Medigap supplemental policy.
  • Your Medicare Advantage plan ends on December 31, and you should not cancel it yourself — let it end automatically when your new coverage begins.

What happens to your coverage when you switch

Your Medicare Advantage plan ends on December 31 of the year you switch. Your Original Medicare coverage (Part A and Part B) begins on January 1. During the gap between when you decide to switch and when January arrives, you remain covered under your current Medicare Advantage plan — there is no uninsured period if you switch during the Annual Enrollment Period.

Do not call your Medicare Advantage plan to cancel. Let it end on its own when your new coverage starts. Canceling early can create gaps in coverage and cause billing problems. Medicare will handle the transition automatically once you enroll in Original Medicare.

If you switch outside the Annual Enrollment Period because of a may have access to event, the timing depends on the event. A move out of your plan's service area, for example, may let you switch when ready. A plan discontinuation gives you a window of several weeks. Ask Medicare or your plan what your effective date will be.

When you can switch outside the Annual Enrollment Period

A Special Enrollment Period opens when certain events happen. The most common are: you move out of your plan's service area, your plan is being discontinued, you lose employer-sponsored coverage, you become may be able to access for Medicaid or lose Medicaid, or you are newly may be able to access for Medicare. Some plans also trigger a Special Enrollment Period if they make major changes to coverage or costs mid-year.

You typically have 60 days from the event to make a change. If you move on June 15, for example, you have until August 14 to switch. The effective date of your new coverage depends on when you enroll and what triggered the Special Enrollment Period — it may be when ready or may be the first of the following month.

To use a Special Enrollment Period, you will need to prove the may have access to event. Have documents ready: a lease or deed if you moved, a notice from your plan if it is being discontinued, a letter from your employer if you lost coverage, or a Medicaid notice if your status changed. Call Medicare at 1-800-MEDICARE to report the event and confirm you may have access to.

What you need to do after you switch

Switching back to Original Medicare is not a complete transaction by itself. You also need to enroll in a Part D prescription drug plan if you take medications. Original Medicare does not cover outpatient drugs. You can enroll in Part D during the same Annual Enrollment Period when you switch to Original Medicare, and your coverage will start January 1.

Many people also buy a Medigap supplemental insurance policy to cover costs that Original Medicare does not — copayments, coinsurance, and deductibles. Medigap is optional, but it can reduce your out-of-pocket costs significantly. You have a six-month window after you turn 65 or enroll in Medicare Part B to buy Medigap without medical underwriting. If you are switching from Medicare Advantage, you may still be within that window, or your state may have protections that let you buy Medigap without underwriting even after the window closes. Check with your state insurance commissioner's office or call 1-800-MEDICARE to learn what applies to you.

You do not need to do anything about Part A or Part B — you already have them. Medicare will automatically continue your coverage when your Medicare Advantage plan ends.

How to enroll in Original Medicare and Part D

You enroll through Medicare directly, not through your current plan. During the Annual Enrollment Period, you have three ways to switch: online at Medicare.gov, by phone at 1-800-MEDICARE, or in person at your local Social Security office.

Online is usually fastest. Go to Medicare.gov, sign in to your account, and look for the enrollment option during the Annual Enrollment Period. You will select Original Medicare and then choose a Part D plan from the list. The system will show you plans available in your area, their monthly premiums, and which pharmacies and drugs they cover. You can compare plans side by side before you choose.

By phone, a Medicare representative will walk you through the same choices. This takes longer but can be helpful if you have questions about specific drugs or pharmacies. The wait time is often shorter in early November than in late November.

If you are switching because of a Special Enrollment Period, the process is the same, but you will need to report your may have access to event first. Call 1-800-MEDICARE and tell them what happened — a move, a plan discontinuation, a change in Medicaid status. They will confirm you may have access to and tell you your effective date. Then you can enroll in Original Medicare and Part D.

Costs and coverage differences you should know

Original Medicare has different costs than Medicare Advantage. You pay a monthly Part B premium (the amount varies by income), an annual Part B deductible (currently $240, though this changes yearly), and coinsurance of 20% for most services after you meet the deductible. You also pay the full cost of outpatient drugs until you enroll in Part D, which has its own premiums and cost-sharing.

Medicare Advantage often has lower or zero monthly premiums and lower deductibles, but it limits you to a network of doctors and hospitals. Original Medicare lets you see any doctor or hospital that accepts Medicare, anywhere in the country. If you travel frequently or see specialists outside a network, Original Medicare may cost less overall despite higher monthly premiums.

Medigap policies fill the gaps in Original Medicare coverage. They vary in comprehensiveness and cost. A basic Medigap plan might cover the Part B deductible and coinsurance. A more comprehensive plan might cover the Part A deductible, skilled nursing facility coinsurance, and foreign travel emergencies. The trade-off is higher monthly premiums for more coverage. You will pay both a Medigap premium and a Part D premium on top of your Part B premium.

What to ask your doctor and Medicare before you switch

Before you enroll in Original Medicare, check whether your current doctors accept Medicare. Most do, but some do not. Call their offices and ask. If your main doctor does not accept Medicare, switching may mean finding a new doctor — a significant decision worth making before you commit to the change.

Ask Medicare or your current plan whether you will face any penalties for switching. In most cases you will not, but if you dropped Part D coverage in the past without good reason, you may owe a penalty when you re-enroll. Medicare can tell you whether a penalty applies to you.

If you take multiple medications, use the Medicare plan finder tool to compare Part D plans. Enter your drugs and pharmacies to see which plans cover them and what your costs will be. Costs vary widely between plans — the cheapest plan for your drugs might save you hundreds of dollars a year.

Frequently Asked Questions

What if I switch and then change my mind?

You have one chance per year to switch plans during the Annual Enrollment Period. Once you enroll in Original Medicare on January 1, you are locked in until the next October 15. If you realize you made a mistake, you cannot switch back to Medicare Advantage until the following October. Plan carefully before you enroll.

Do I lose my Medicare Advantage benefits when ready when I switch?

No. Your Medicare Advantage plan covers you through December 31. Your Original Medicare coverage begins January 1. There is no gap if you switch during the Annual Enrollment Period. If you switch because of a Special Enrollment Period, the timing depends on the event — ask Medicare what your effective date will be.

Can I keep my current prescription drug coverage if I switch?

No. Your Medicare Advantage plan's drug coverage ends when your plan ends on December 31. You must enroll in a standalone Part D plan if you want prescription drug coverage under Original Medicare. You can enroll in Part D during the same Annual Enrollment Period when you switch to Original Medicare.

Will I have to pay a penalty for switching?

Not for switching itself. However, if you dropped Part D coverage in the past without a good reason, you may owe a late enrollment penalty when you re-enroll. Call Medicare at 1-800-MEDICARE and ask whether a penalty applies to you before you enroll.

What if my Medicare Advantage plan is being discontinued?

Your plan will send you a notice at least 30 days before it ends. You can switch to any other Medicare plan — Original Medicare, another Medicare Advantage plan, or a Medicare Advantage plan with a different insurer. You have until the plan's end date to make a change. If you do not choose a new plan, Medicare will automatically enroll you in another plan in your area, which may not be your preference. Choose your own plan instead of waiting for automatic enrollment.