Yes, you can cancel Medicare, but the rules depend on which type of coverage you have and when you want to stop

You can drop Original Medicare (Parts A and B), Medicare Advantage (Part C), or prescription drug coverage (Part D) — but each has different rules about when you can cancel and what happens after. If you cancel during the wrong time window, you may face a penalty when you rejoin, or you may be locked out until the next open enrollment period. The key is understanding your coverage type and the important date that explore to you.

Most people can cancel during the annual open enrollment period (October 15 to December 7 each year), when changes take effect January 1. Some people may have access to for a Special Enrollment Period, which opens outside the annual window if you have a may have access to life event — like losing employer coverage, moving to a new state, or getting married.

Key Takeaways

  • You can cancel Original Medicare Part A or Part B at any time by contacting Social Security, but stopping Part B before age 65 may trigger a lifetime penalty.
  • Medicare Advantage and Part D plans can only be cancelled during open enrollment (October 15 to December 7) or if you may have access to for a Special Enrollment Period.
  • If you cancel Part D and rejoin later without continuous coverage, you will pay a higher premium for as long as you have the plan.
  • Cancelling Medicare entirely is only an option if you have other may have access to coverage, such as an active employer health plan.

Cancelling Original Medicare Part A or Part B

You can cancel Part A (hospital insurance) or Part B (medical insurance) by contacting Social Security directly — by phone at 1-800-772-1213, in person at your local Social Security office, or by mail. There is no enrollment window; you can request cancellation any time. Your coverage will end on the last day of the month in which you request it, or on a date you specify.

However, cancelling Part B before age 65 carries a serious long-term cost. If you drop Part B and do not have other health coverage, you will owe a late enrollment penalty for every month you were without it. That penalty is added to your Part B premium permanently — it does not go away when you rejoin. The penalty is roughly 10 percent of the standard Part B premium for each 12-month period you were not enrolled. If you were supposed to sign up at 65 and waited five years, you would pay an extra 50 percent on top of your regular premium for life.

The exception is if you have creditable coverage — health insurance through a current employer, a spouse's employer, or a government program like TRICARE or the Veterans Health Administration. If you have creditable coverage, you can drop Part B without penalty and rejoin later when that coverage ends.

Cancelling Medicare Advantage or Part D Plans

Unlike Original Medicare, you cannot cancel a Medicare Advantage plan (Part C) or a prescription drug plan (Part D) whenever you want. You can only make changes during specific windows. The main window is the annual open enrollment period, which runs October 15 to December 7 each year. Changes made during this window take effect January 1 of the following year.

If you want to cancel your Advantage or Part D plan outside of open enrollment, you need a may have access to life event. These include losing employer coverage, moving out of your plan's service area, getting married or divorced, becoming a U.S. citizen, or experiencing a significant decrease in income. When you have a may have access to event, you usually have 60 days to make a change. Contact your plan directly or call Medicare at 1-800-MEDICARE to report the event and request a change.

If you cancel Part D and go without prescription drug coverage, you will owe a late enrollment penalty if you rejoin later. That penalty is about 1 percent of the national average Part D premium for each month you were not enrolled, and it stays on your premium for as long as you have Part D coverage. Unlike Part B, there is no exception for creditable coverage — the only way to avoid the penalty is to have had Part D or other prescription drug coverage that is at least as good as Medicare's.

What Happens When You Cancel Medicare Entirely

You cannot straightforward walk away from Medicare without consequences. If you are 65 or older and enrolled in Medicare, you are required to have Part A and Part B unless you have other may have access to health coverage. If you cancel without having an alternative plan in place, you lose your coverage and cannot rejoin until the next open enrollment period — which could be months away.

The only way to cancel Medicare entirely is if you have creditable coverage through an employer, a spouse's employer, or a government program. You must notify Medicare in writing that you are dropping coverage because you have other insurance. Keep a copy of your cancellation request and proof of your other coverage, in case Medicare questions the cancellation later.

If you are still working and covered by your employer's health plan, you may not need Medicare at all. However, you should still enroll in Part A (hospital insurance) at 65, even if you do not enroll in Part B, because Part A has no late enrollment penalty and covers hospital stays. Part B is the one with the penalty if you delay.

Switching Between Medicare Plans Without Fully Cancelling

If you want to change plans rather than cancel Medicare altogether, you have more flexibility. During open enrollment, you can switch from Original Medicare to a Medicare Advantage plan, or vice versa. You can also switch from one Advantage plan to another, or from one Part D plan to another.

When you switch from Original Medicare to Medicare Advantage, your Part B coverage continues under the Advantage plan — you do not lose hospital or medical coverage. If you switch back to Original Medicare later, you may want to enroll in a Medigap policy (supplemental insurance) to cover costs that Original Medicare does not pay. Medigap has its own enrollment rules and important date, so timing matters if you plan to add it.

How to Cancel: Step by Step

For Original Medicare (Part A or Part B): Call Social Security at 1-800-772-1213 (TTY 1-800-325-0778), visit your local Social Security office, or mail a written request to your local office. You can find your local office at ssa.gov/locator. Include your name, Social Security number, date of birth, and the date you want coverage to end.

For Medicare Advantage or Part D plans: Contact your plan directly using the phone number on your insurance card, or call Medicare at 1-800-MEDICARE (1-800-633-4227). You can also make changes online at Medicare.gov if you have a My Medicare account. If you are cancelling due to a may have access to life event, have documentation ready — such as a letter from your employer, a lease showing you moved, or a marriage certificate.

After you cancel, keep records of your cancellation request and the date your coverage ends. If you have prescriptions or upcoming medical appointments, plan ahead so you know what your new coverage will be.

Penalties and What They Cost You

The two main penalties are Part B late enrollment and Part D late enrollment. Part B's penalty is roughly 10 percent of the standard monthly premium for each 12-month period you were not enrolled. The standard Part B premium changes each year, so the penalty amount changes too. Part D's penalty is about 1 percent of the national average Part D premium per month without coverage.

Both penalties are permanent — they do not expire or decrease over time. If you drop Part B at 65 and rejoin at 70, you will pay the penalty for the rest of your life. The same applies to Part D. This is why it is important to understand your coverage options before you cancel, especially if you are under 65 or considering dropping Part D.

Frequently Asked Questions

Can I cancel Medicare if I am still working and have employer insurance?

Yes, if your employer plan is creditable coverage. You can cancel Part B without penalty, but you should still enroll in Part A at 65 because it has no late penalty. When your employment ends, you will need to rejoin Part B within 63 days to avoid a penalty. Notify Medicare in writing that you are cancelling due to active employer coverage.

What happens if I cancel Medicare Advantage but want to go back to Original Medicare?

You can switch back during open enrollment (October 15 to December 7) with no penalty. Your Original Medicare coverage will start January 1. If you want to add a Medigap policy, you have a limited window to do so without medical underwriting — usually 63 days from when your Advantage plan ends. After that window, insurers can deny you or charge more based on your health.

Can I cancel just Part D and keep the rest of Medicare?

Yes. You can cancel Part D during open enrollment or if you have a may have access to life event. However, if you go without Part D or other prescription drug coverage and rejoin later, you will owe a late enrollment penalty on your premium permanently. The only exception is if you had other coverage that was at least as good as Medicare's.

What if I cancel Medicare and then change my mind?

If you cancelled during open enrollment, you can rejoin during the next open enrollment period (October 15 to December 7). If you cancelled outside of open enrollment, you cannot rejoin until the next open enrollment period unless you have a may have access to life event. During the gap, you have no Medicare coverage, so plan ahead for medical needs.

Do I have to notify my doctor if I cancel Medicare?

You should notify your doctor's office and any specialists you see regularly, so they know what insurance you will have going forward. Some doctors do not accept certain plans, so it is worth checking before your coverage changes. Also notify your pharmacy if you are changing Part D plans, so they have your new information on file.