You don't have to reapply for Medicare every year once you're enrolled

Once you're signed up for Medicare, your coverage continues automatically each year. You don't need to fill out a new process or go through an enrollment process again unless something changes — like where you live, your income, or the type of coverage you want. Medicare Part A (hospital insurance) and Part B (medical insurance) renew on their own as long as you keep paying your premiums and remain a U.S. citizen or permanent resident.

The confusion often comes from Annual Enrollment Period, which happens every fall. This is a time when you can make changes to your coverage if you want to — switching plans, adding prescription drug coverage, or dropping coverage you no longer need. But choosing to make changes is different from being required to reapply. If you're happy with what you have, you can skip enrollment and your coverage stays the same.

Key Takeaways

  • Medicare Part A and Part B continue automatically each year without reapplication once you're enrolled.
  • Annual Enrollment Period (October 15 to December 7 each year) lets you change plans, but you don't have to make any changes if you're satisfied with your current coverage.
  • If you have a Medicare Advantage plan or prescription drug coverage, those plans may change their benefits or costs each year, which is why reviewing your options during enrollment is often a good idea.
  • You must notify Social Security or Medicare if you move to a different state, as this can affect your coverage options and costs.

When your Medicare coverage automatically renews

Your Original Medicare (Part A and Part B) renews automatically on January 1 each year. As long as you're paying your Part B premium — either through Social Security deductions or directly to Medicare — your coverage continues without any action on your part. There's no form to sign, no important date to meet, and no risk of your coverage lapsing if you do nothing.

If you have a Medicare Advantage plan (Part C) or a prescription drug plan (Part D), those also renew automatically on January 1. However, the specific benefits, costs, and participating doctors and pharmacies in your plan may change from year to year. This is why many people review their options during Annual Enrollment Period — not because they have to reapply, but because the plan they chose last year might work differently this year.

What happens during Annual Enrollment Period

Annual Enrollment Period runs from October 15 to December 7 each year. During this window, you can make changes to your Medicare coverage without penalty. You might switch from Original Medicare to a Medicare Advantage plan, drop a plan you no longer want, add prescription drug coverage, or move from one plan to another.

If you don't make any changes during this period, your current coverage straightforward continues into the new year. There is no penalty for staying with the same plan, and you don't lose coverage if you miss the important date. However, if you want to make changes after December 7, you'll generally have to wait until the next Annual Enrollment Period — with rare exceptions for people who experience a major life event like moving, losing other insurance, or getting married.

Life changes that require you to notify Medicare

While you don't reapply for Medicare itself, certain changes in your life do require you to contact Medicare or Social Security. If you move to a different state, you should report this because Medicare Advantage and prescription drug plans vary by location, and your current plan may not be available where you're moving. You can update your address through your Medicare account online, by calling 1-800-MEDICARE, or by visiting your local Social Security office.

Other changes worth reporting include losing other health insurance, getting married or divorced, or a significant change in income. These don't force you to reapply for Medicare itself, but they may open a special enrollment period that lets you make plan changes outside the normal October-December window. For example, if you lose employer coverage, you have 63 days to switch plans without waiting until the next Annual Enrollment Period.

How to check your Medicare coverage status

You can view your current Medicare coverage anytime by logging into Medicare.gov with your username and password, or by creating an account if you don't have one. Your online account shows which parts of Medicare you have, your plan details, your deductibles and copays, and any prescription drug coverage. This is also where you can make changes during Annual Enrollment Period.

If you don't use the online portal, you can call 1-800-MEDICARE to speak with someone who can confirm your coverage and answer questions about what you're enrolled in. You can also request a printed copy of your coverage information by mail. Checking your coverage once a year — even if you're not planning to make changes — helps you catch any errors and understand what your costs will be in the coming year.

What to do if you want to change your coverage

If you're unhappy with your current plan or want to try something different, Annual Enrollment Period is your main opportunity. You can compare plans side by side on Medicare.gov using their plan comparison tool, which shows you the costs, coverage, and doctors in each plan. You can also call 1-800-MEDICARE to have someone walk you through your options over the phone.

If you miss Annual Enrollment Period, you're generally locked into your current plan until the next October. The main exception is if you experience a may have access to life event — moving, losing insurance, getting married, or having a significant drop in income. When that happens, you have a limited window (usually 60 days) to make changes. Report the change to Medicare as soon as it happens so you don't miss your window.

Frequently Asked Questions

What happens if I don't pay my Medicare premium?

If you don't pay your Part B premium, your coverage can be terminated. However, Medicare usually sends you notices before this happens and gives you time to pay. If your premium is deducted from Social Security, it's taken automatically. If you pay directly, make sure your payment reaches Medicare on time each month.

Can I switch from Original Medicare to Medicare Advantage anytime?

You can switch during Annual Enrollment Period (October 15 to December 7) without penalty. If you miss that window, you're generally stuck with your current plan until next year, unless you have a may have access to life event like moving or losing other insurance.

Do I have to enroll in Part D prescription drug coverage?

Part D is optional, but if you don't sign up when you first become may be able to access and go without creditable coverage, you may face a penalty if you join later. If you don't take prescription drugs, you can skip Part D, but it's worth reviewing your situation each year during enrollment.

What if I move to a different state?

Report your move to Medicare or Social Security. Your Medicare Advantage or prescription drug plan may not be available in your new state, which would trigger a special enrollment period letting you switch plans outside the normal October-December window.

How do I know if my plan is changing for next year?

Medicare sends you a notice in the fall showing any changes to your plan's costs, coverage, and participating providers. You can also check Medicare.gov or call 1-800-MEDICARE. Even if your plan isn't changing, reviewing your options during Annual Enrollment Period is a good habit.