How to cancel Medicare depends on which type you have and why you want to leave

You can cancel Original Medicare (Parts A and B) by notifying Social Security, though most people who want out are actually enrolled in Medicare Advantage (Part C) and can switch plans during open enrollment or certain life events. If you have Part D (prescription drug coverage), you can drop it separately. The process differs by plan type, and the timing matters — cancel at the wrong time and you may face penalties or gaps in coverage.

The most common reason people want to cancel is that they've gained employer coverage or moved to a state where their plan no longer operates. Some people cancel Original Medicare because they've enrolled in a Medicare Advantage plan instead. Others drop Part D when their prescription costs drop or they move to a plan that includes drug coverage. Understanding which part you're canceling and when you can do it will save you from unintended consequences.

Key Takeaways

  • Original Medicare (Parts A and B) can be canceled by contacting Social Security in writing or by phone, but you lose federal health coverage if you do.
  • Medicare Advantage plans can be dropped during the Annual Enrollment Period (October 15 to December 7) or if you have a may have access to life event like moving or losing employer coverage.
  • Part D (prescription drug) can be dropped separately from Original Medicare, but dropping it without other coverage may result in a late enrollment penalty.
  • If you cancel and later want Medicare back, you may face waiting periods or permanent penalties depending on how long you were uninsured.
  • The important date to make changes is usually December 7 for the Annual Enrollment Period, and changes take effect January 1.

Canceling Original Medicare (Parts A and B)

To cancel Original Medicare, you must contact Social Security directly — Medicare itself does not process cancellations. You can call Social Security at 1-800-772-1213 (TTY 1-800-325-0778) or visit your local Social Security office in person. You'll need to state clearly that you want to cancel both Part A and Part B. Social Security will send you a written confirmation of the cancellation date.

Before you cancel, understand what you're giving up. Original Medicare covers hospital care (Part A) and doctor visits (Part B). If you cancel and have no other health coverage, you will have no federal health insurance. You cannot straightforward "pause" Original Medicare and restart it later without potential penalties. If you cancel and want to re-enroll, you may face a waiting period or a permanent increase to your Part B premium (currently 10% per year of delay, though this varies).

The exception is if you're canceling Original Medicare because you've enrolled in a Medicare Advantage plan. In that case, you don't contact Social Security — your Medicare Advantage plan handles the switch automatically when you enroll. Your Original Medicare coverage ends when your Advantage plan begins, usually on the first of the month following your enrollment.

Dropping a Medicare Advantage plan

Medicare Advantage plans are easier to leave than Original Medicare. You can drop your plan and return to Original Medicare during the Annual Enrollment Period, which runs October 15 through December 7 each year. Changes take effect January 1. You can also switch from one Medicare Advantage plan to another during this same window without returning to Original Medicare first.

If you have a may have access to life event, you can drop your plan outside the Annual Enrollment Period. may have access to events include moving out of your plan's service area, losing employer coverage, becoming may be able to access for Medicaid, or experiencing certain family changes like death or divorce. You typically have 60 days from the event to make the change. Contact your plan directly to report the event and request the change.

To drop your Medicare Advantage plan, call the plan's customer service number (on your insurance card) and tell them you want to disenroll. Ask for written confirmation of the disenrollment date. If you're switching to Original Medicare, you should also contact Medicare at 1-800-MEDICARE to confirm that Original Medicare coverage will begin when your Advantage plan ends. Some people make this call to also enroll in a Part D plan at the same time, since Original Medicare does not include prescription drug coverage.

Dropping Part D (prescription drug coverage)

Part D can be dropped separately from Original Medicare or a Medicare Advantage plan. You can drop Part D during the Annual Enrollment Period (October 15 to December 7) or if you have a may have access to life event. Contact your Part D plan directly to request disenrollment, or contact Medicare at 1-800-MEDICARE and ask them to remove Part D from your coverage.

Dropping Part D without replacing it with other prescription coverage may result in a late enrollment penalty. This penalty is added to your Part D premium permanently if you go 63 days or more without Part D or other creditable drug coverage. The penalty amount depends on how long you went without coverage and changes each year. If you're dropping Part D because you have employer coverage or Medicaid that includes prescriptions, make sure that coverage is active before your Part D ends, and keep proof that it is creditable coverage.

What happens after you cancel

Once your cancellation is processed, you will receive a confirmation letter from Medicare or your plan. Your coverage ends on the date stated in that letter. If you cancel Original Medicare and have no other coverage lined up, you will be uninsured starting that date. If you cancel a Medicare Advantage plan and do not enroll in Original Medicare or another plan, you will also be uninsured.

If you realize you made a mistake, you may be able to re-enroll, but the rules are strict. If you cancel Original Medicare and want it back, you can re-enroll only during the General Enrollment Period (January 1 to March 31 each year), and coverage begins July 1. You will likely face a permanent Part B premium penalty. If you cancel a Medicare Advantage plan outside the Annual Enrollment Period without a may have access to event, you cannot re-enroll in any Medicare plan until the next Annual Enrollment Period.

Canceling because you have employer coverage

If you're canceling Medicare because you or your spouse still has employer health coverage, notify your employer's benefits department that you are dropping Medicare. Keep a copy of your employer's coverage documents and the dates coverage is active — you will need this if you ever want to re-enroll in Medicare without penalties.

Some people delay enrolling in Medicare while they have employer coverage, which is allowed. Others enroll and then want to drop it. If you're dropping Original Medicare because employer coverage is better, contact Social Security to cancel. If you're dropping a Medicare Advantage plan for the same reason, contact your plan. Make sure your employer coverage is active before your Medicare ends, and confirm the effective date in writing.

Common mistakes to avoid

Do not assume that canceling one part of Medicare cancels the others. If you cancel Part D, you still have Original Medicare or Medicare Advantage. If you cancel a Medicare Advantage plan, you do not automatically have Original Medicare — you must enroll in it separately or you will have no coverage. Always confirm in writing what is being canceled and when.

Do not cancel without a replacement plan in place. Going uninsured, even for a month, can create gaps in coverage and may trigger penalties when you re-enroll. If you're switching plans, make sure the new plan's coverage begins on or before the old plan ends.

Do not assume you can re-enroll whenever you want. Original Medicare re-enrollment is limited to the General Enrollment Period (January 1 to March 31), and you will face a permanent premium penalty. Medicare Advantage re-enrollment is limited to the Annual Enrollment Period unless you have a may have access to life event. Missing these windows can lock you out of changes for a full year.

Frequently Asked Questions

Can I cancel Medicare and get it back later without a penalty?

Not without conditions. If you cancel Original Medicare, you can re-enroll only during the General Enrollment Period (January 1 to March 31), and you will face a permanent Part B premium penalty of 10% per year of delay. If you cancel a Medicare Advantage plan, you can re-enroll during the next Annual Enrollment Period, but you cannot switch plans outside that window unless you have a may have access to life event.

What if I cancel Medicare Advantage but forget to enroll in Original Medicare?

You will have no Medicare coverage starting the day your Advantage plan ends. You cannot enroll in Original Medicare until the next General Enrollment Period (January 1 to March 31), and coverage will not begin until July 1. Contact Medicare when ready at 1-800-MEDICARE if this happens, as you may be able to request a special enrollment period in some cases.

Do I have to cancel Part D if I'm dropping Medicare Advantage?

No. If you're switching from Medicare Advantage to Original Medicare, you can keep your Part D plan or switch to a different one during the Annual Enrollment Period. If you want to drop Part D entirely, you can do that separately, but be aware of the late enrollment penalty if you go without creditable drug coverage for more than 63 days.

What if my Medicare Advantage plan is leaving my area?

If your plan is discontinuing service in your area, Medicare will send you a notice. You have until December 7 to switch to a different Medicare Advantage plan or to Original Medicare. This counts as a may have access to life event, so you can make changes outside the Annual Enrollment Period if needed. Contact your current plan or Medicare to confirm your options.

Can I cancel Medicare if I'm moving to another country?

Yes, but understand the consequences. Medicare generally does not cover care outside the United States. If you're moving permanently, you can cancel by contacting Social Security (for Original Medicare) or your plan (for Medicare Advantage). If you think you might return, consider keeping your coverage, as re-enrolling later may be difficult or costly.