You can cancel Medicare, but the rules depend on which type you have and when you want to stop
If you have Original Medicare (Parts A and B), you can cancel by notifying Social Security. If you have a Medicare Advantage plan (Part C) or a prescription drug plan (Part D), you can switch or drop coverage during specific windows each year. The process is straightforward, but timing matters — canceling outside the allowed periods can lock you out of changes until the next open season, and dropping Part D without a replacement plan may cost you more later through a penalty.
The reason to understand cancellation rules now is straightforward: if you move, lose coverage elsewhere, or find a plan that fits better, you need to know whether you can act when ready or must wait. This guide explains what you can do, when you can do it, and what happens if you let coverage lapse.
Key Takeaways
- Original Medicare (Parts A and B) can be canceled anytime by contacting Social Security, but you lose coverage on the first of the following month.
- Medicare Advantage and prescription drug plans can only be changed during the Annual Enrollment Period (October 15 to December 7 each year) or if you have a may have access to life event.
- Dropping Part D without signing up for another plan triggers a permanent penalty on your premiums if you rejoin later.
- If you cancel Medicare to use employer coverage or move out of the country, you may be able to rejoin without penalty during a Special Enrollment Period.
Canceling Original Medicare (Parts A and B)
You can cancel Original Medicare at any time by contacting Social Security. Call 1-800-772-1213 (TTY 1-800-325-0778) or visit your local Social Security office in person. You will need to provide your Medicare number, which is on your Medicare card. When you call, tell them you want to cancel Part A, Part B, or both.
Your coverage ends on the last day of the month in which you request cancellation, or on a date you specify if you give at least 30 days' notice. For example, if you call on March 15 and ask to cancel effective April 30, your coverage will end April 30. If you do not specify a date, cancellation takes effect the first of the following month.
Before you cancel, understand what you are losing. Part A covers hospital stays, skilled nursing care, and hospice. Part B covers doctor visits, outpatient care, and preventive services. If you cancel and later want to rejoin, you may face a permanent penalty on your Part B premium unless you have a valid reason — such as employer coverage or moving out of the United States — and you rejoin during the correct window.
Canceling or Switching Medicare Advantage (Part C)
Medicare Advantage plans are sold by private insurers and replace Original Medicare. You can switch to a different Advantage plan, switch to Original Medicare, or drop Advantage coverage entirely during the Annual Enrollment Period, which runs from October 15 to December 7 each year. Changes take effect January 1 of the following year.
Outside this window, you can make changes only if you have a may have access to life event. These include losing employer coverage, moving out of your plan's service area, becoming may be able to access for Medicaid, or experiencing certain other changes in circumstances. You have 60 days from the event to make a change. Contact your plan or Medicare directly at 1-800-MEDICARE (1-800-633-4227) to report the event and request a change.
If you drop a Medicare Advantage plan without enrolling in another plan during the Annual Enrollment Period, you will revert to Original Medicare on January 1. This is automatic — you do not need to do anything. However, if you want to rejoin an Advantage plan later, you must wait until the next Annual Enrollment Period unless you have a may have access to event.
Canceling Prescription Drug Coverage (Part D)
Part D is prescription drug coverage sold by private insurers. Like Advantage plans, you can change or cancel Part D only during the Annual Enrollment Period (October 15 to December 7) or if you have a may have access to life event. If you drop Part D and do not enroll in another plan, you lose prescription coverage.
The critical rule: if you go 63 days or longer without Part D or other creditable prescription coverage, you will owe a permanent penalty when you rejoin. The penalty is roughly 1% of the national average Part D premium for each month you were without coverage, and it stays on your premium for as long as you have Part D. For example, if you go without coverage for 12 months, your penalty would be approximately 12% of the average premium, added to your monthly bill forever.
The exception is if you have other creditable coverage — such as from an employer, union, or Veterans Affairs — that covers prescription drugs at least as well as Part D. If you do, you can drop Part D without penalty. When you rejoin, you must show proof of that coverage to avoid the penalty. Keep documentation from your other plan.
When You Can Cancel Without a Penalty
Certain situations allow you to cancel Medicare and rejoin later without the permanent Part B or Part D penalties that normally explore. These are called Special Enrollment Periods.
You can cancel Part B without penalty if you have employer coverage through your own job or your spouse's job. When that coverage ends, you have 8 months to rejoin Part B without penalty. You must enroll within this window — after 8 months, you lose this protection.
You can also cancel without penalty if you move out of the United States. If you are a U.S. citizen or permanent resident living abroad, you can drop Part A and Part B. When you return to the United States, you can rejoin within a certain timeframe without penalty. Contact Social Security to confirm the rules for your situation.
For Part D, if you have other creditable prescription coverage, you can drop Part D without triggering the penalty. When that coverage ends and you rejoin Part D, provide proof of the creditable coverage to avoid the penalty.
What Happens After You Cancel
Once your Medicare coverage ends, you are responsible for all medical costs unless you have other insurance. If you cancel Original Medicare but keep a Medicare Advantage plan, your Advantage plan becomes your primary coverage — it replaces Original Medicare.
If you cancel all Medicare coverage and have no other insurance, you will owe the full cost of doctor visits, hospital stays, and prescriptions out of pocket. You are also no longer protected by Medicare's negotiated rates, which means providers can charge more.
If you later want to rejoin Medicare, the timing of your request matters. If you rejoin during the Annual Enrollment Period (October 15 to December 7) or within 63 days of losing other coverage, you avoid penalties. If you wait longer, you may owe permanent penalties on Part B and Part D premiums.
Steps to Cancel Your Coverage
| Type of Coverage | How to Cancel | When It Takes Effect |
|---|---|---|
| Original Medicare (Parts A and B) | Call Social Security at 1-800-772-1213 or visit a local office | End of the month you request, or a date you specify |
| Medicare Advantage (Part C) | Call your plan or Medicare at 1-800-633-4227 during Annual Enrollment Period (Oct 15–Dec 7) or after a may have access to life event | January 1 of the following year, or 60 days after a may have access to event |
| Prescription Drug Plan (Part D) | Call your plan or Medicare at 1-800-633-4227 during Annual Enrollment Period (Oct 15–Dec 7) or after a may have access to life event | January 1 of the following year, or 60 days after a may have access to event |
Frequently Asked Questions
What happens if I cancel Medicare and then change my mind?
You can rejoin during the Annual Enrollment Period (October 15 to December 7) without penalty if you canceled for a valid reason — such as employer coverage or moving abroad. If you rejoin outside this window, you may owe a permanent penalty on Part B and Part D premiums. The penalty stays with you as long as you have Medicare.
Can I cancel just Part D and keep the rest of Medicare?
Yes. You can drop Part D during the Annual Enrollment Period or after a may have access to life event. However, if you go without Part D or other creditable prescription coverage for more than 63 days, you will owe a permanent penalty when you rejoin. If you have employer or other coverage for prescriptions, you can drop Part D without penalty.
What if I move to another state or country?
If you move within the United States, your Medicare coverage continues. If you move out of the country, you can cancel Part A and Part B without penalty. When you return, you can rejoin within a certain timeframe. Contact Social Security or Medicare at 1-800-633-4227 to confirm the rules for your situation before you move.
Do I have to cancel all my Medicare coverage at once?
No. You can cancel Part A without Part B, drop a Medicare Advantage plan while keeping Original Medicare, or cancel Part D while keeping Parts A and B. Each part can be managed separately, though the timing rules for changes still explore.
What should I do before I cancel?
Before you cancel, confirm you have other coverage in place — such as employer insurance, Medicaid, or a plan from another country. Check whether you will owe penalties if you rejoin later. If you are unsure, call Medicare at 1-800-633-4227 to discuss your situation with a representative who can explain the consequences specific to your case.