Medicare Open Enrollment 2025-2026: What You Need to Know
Medicare open enrollment runs from Oct. 15 to Dec. 7 — a time for people with Medicare to change or join plans.
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Medicare open enrollment is the period from Oct. 15 to Dec. 7 each year when you can make changes to your Medicare coverage. You can switch from Original Medicare to a Medicare Advantage plan, or vice versa. You can also change your Part D prescription drug coverage to other options.
When is Medicare open enrollment?
Medicare open enrollment happens every fall from Oct. 15 to Dec. 7. Changes you make during this time take effect on Jan. 1.
Mark your calendar
What can you do during Medicare open enrollment?
Here's what you can do during Medicare open enrollment:
Choose a tab to see options based on what kind of Medicare coverage you have.
Change from one Medicare Advantage plan to another.
Change from a Medicare Advantage plan without drug coverage to a plan with drug coverage, or vice versa.
Switch from Medicare Advantage to Original Medicare.
Original Medicare vs. Medicare Advantage
Best Medicare Advantage plans
Compare Medicare Advantage plans
Can I sign up for Medicare during open enrollment?
Medicare open enrollment applies to people already enrolled in Medicare. So if you don’t already have Medicare, open enrollment isn’t the time when you sign up.
If you're new to Medicare, you can sign up during your initial enrollment period. It generally starts three months before your 65th birthday month and ends three months after.
If you miss your initial enrollment period, you might be able to sign up during a special enrollment period based on certain life events. Otherwise, you’ll need to sign up during the general enrollment period: Jan. 1 to March 31.
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What if I just want to keep my current coverage?
Medicare Advantage plans can change every year. The same plan might have different benefits, in-network doctors and/or drug coverage, for example. It's a good idea to take a look to see whether your plan is still the best fit. Part D plans change from year to year, too. Watch out for changes to covered drugs, premiums and out-of-pocket costs. Plug your drugs into a plan comparison tool to find the best coverage option for you.
Can I drop my Medicare Advantage plan and go back to Original Medicare?
There are two annual periods when you can switch from Medicare Advantage to Original Medicare.
Medicare open enrollment: Oct. 15 to Dec. 7.
Medicare Advantage open enrollment: Jan. 1 to March 31.
If you go back to Original Medicare during open enrollment, you might be able to purchase a Medicare Supplement Insurance (Medigap) plan. But because you’re outside of your Medicare Supplement open enrollment period, you might pay more or be denied because of your health status.
What happens if I do nothing during Medicare open enrollment?
If you don’t do anything during Medicare open enrollment, your current coverage will renew for next year.
If your current plan is discontinued, you might need to take action.
If your Medicare Advantage plan ends, you’ll be enrolled in Original Medicare unless you pick another Medicare Advantage plan.
If your Medicare Part D plan ends, you’ll lose prescription drug coverage unless you sign up for another plan. (If you have Extra Help, you’ll be automatically enrolled in a new plan unless you choose one yourself.)
If your plan has been discontinued, you’ll likely qualify for a special enrollment period that may go beyond the Dec. 7 deadline for Medicare open enrollment. If your provider sends a notice that your plan is being discontinued, read the notice to make sure you understand your options.
Shopping for Medicare Advantage plans? We have you covered.
MEDICARE ADVANTAGE is an alternative to traditional Medicare offered by private health insurers. Compare options from our Medicare Advantage roundup. | |
Best for size of network
| Best for Part B Giveback
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Best for ratings
| Best for low-cost plan availability
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Star ratings from CMS and on a 5-★ scale. | |
Best Medicare plans in each state
Medicare Advantage plan availability varies by location. Click on a state on the map below to see NerdWallet's picks for the best Medicare Advantage plans available in that state.
Top Medicare Advantage companies
More than half of Medicare-eligible people are in a Medicare Advantage plan. But each plan has different strengths and weaknesses. Here’s the list of Medicare Advantage plans this year that got our attention.
Best for size of network: UnitedHealthcare.
Best for ratings: Aetna.
Best for low-cost plan availability: Cigna.
Best for Part B Giveback: Humana.
Best startup: Devoted Health.
» Learn more in our roundup of the best Medicare Advantage plans
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