How to change your address with Medicare

You can change your Medicare address online, by phone, or by mail. The fastest route is online through your Medicare.gov account if you have one set up — the change takes effect when ready. If you do not have an online account or prefer to call, Medicare's phone line processes address changes the same day you call. Mail takes one to two weeks. You do not need to contact your insurance company separately; Medicare handles the address change across all your coverage types.

All three methods work equally well for your coverage itself. The choice comes down to speed and what you have available right now. If you are moving soon and need confirmation quickly, the phone method gives you a same-day confirmation you can hear directly. If you prefer written proof before you move, mail works but requires planning ahead.

Key Takeaways

  • The online method through Medicare.gov is fastest and shows your new address right away, but you need a username and password set up first.
  • Calling 1-800-MEDICARE (1-800-633-4227) takes about 10 minutes and works whether or not you have an online account.
  • You will need your Medicare number (on your card) and your new address, but not proof of residency or a lease.
  • Your new address appears on your Medicare card within one to three weeks, but your coverage starts using the new address when ready.
  • If you move to a different state, your Medicare coverage does not change, but your prescription drug plan or Medicare Advantage plan may need updating.

Changing your address online through Medicare.gov

Log in to your Medicare.gov account using your username and password. If you do not have an account, you can create one at Medicare.gov by clicking "Sign In" in the top right corner and selecting "Create an account." You will need your Medicare number (found on your red, white, and blue Medicare card) and an email address. The account creation takes about five minutes.

Once logged in, click "Personal Information" in the left menu, then select "Address." Enter your new street address, city, state, and ZIP code. Review the information for accuracy, then click "Save." Your new address takes effect when ready, and you will see it reflected in your account right away. You do not need to do anything else — Medicare updates all your records automatically. If you have a Medicare Advantage plan or prescription drug plan, those records update at the same time.

If you run into trouble logging in or cannot find the Personal Information section, call 1-800-MEDICARE instead. The phone method is just as fast and does not require you to remember a password. You can also use the online chat feature on Medicare.gov if you prefer not to call.

Changing your address by phone

Call 1-800-MEDICARE (1-800-633-4227) and tell the representative you need to update your address. Have your Medicare number ready — it is on your Medicare card. The representative will ask for your new street address, city, state, and ZIP code, and may ask you to confirm your date of birth for security. They may also ask whether you have moved or are about to move, so they can note the timing in your file.

The call usually takes 5 to 10 minutes. Your address change takes effect the same day. The representative will confirm your new address back to you before ending the call. You will receive a confirmation letter in the mail within one to two weeks, but your coverage uses your new address right away. Write down the name of the representative and the time you called, in case you need to reference the change later.

Medicare's phone lines are open Monday through Friday, 8 a.m. to 8 p.m. Eastern time. If you call outside these hours, you can leave a message and a representative will call you back the next business day, though it is faster to call during business hours. Lines are typically shorter early in the morning or late in the afternoon.

Changing your address by mail

Print or write a letter that includes your Medicare number, your full name, your old address, and your new address. Mail it to:

Centers for Medicare & Medicaid Services 7500 Security Boulevard Baltimore, MD 21244

Include a note that says "Please update my address." You do not need to send your Medicare card or any other documents. Mail takes one to two weeks to arrive, and Medicare will process your change within a few days of receiving it. You will get a confirmation letter showing your new address within two to three weeks of mailing. Keep a copy of the letter you send for your records.

This method is slower than phone or online, so use it only if you cannot access the other two options. If you are moving soon and need your new address on file quickly, call instead. If you are moving and want to be certain the letter arrives, consider sending it certified mail so you have proof of delivery.

What happens when you move to a different state

Your Original Medicare coverage (Part A and Part B) works the same way in every state, so changing your address does not affect your coverage itself. However, if you have a Medicare Advantage plan (Part C) or a standalone prescription drug plan (Part D), you may need to check whether your plan is still available in your new state. Some plans operate in only certain states or counties, and your current plan may not serve your new location.

After you move, log into Medicare.gov or call 1-800-MEDICARE to check whether your current plan covers your new address. If it does not, you can switch plans during the Annual Enrollment Period (October 15 to December 7 each year) or during a Special Enrollment Period if your move qualifies you for one. A move to a new state or county typically qualifies you for a Special Enrollment Period, which gives you a window of time outside the regular enrollment season to make changes.

Update your address first, then check your plan coverage. Medicare will show you which plans are available at your new address once your address change is processed. If you are moving and want to know your options before you go, you can call 1-800-MEDICARE with your new address and ask what plans serve that area.

Updating your address with your insurance company

If you have a Medicare Advantage plan or a standalone prescription drug plan, you do not need to contact your insurance company separately to change your address. When you update your address with Medicare, that change flows to your insurance company automatically within a few days. Your insurance company receives the update from Medicare's system and updates their records on their end.

However, if you have other insurance (such as a supplemental plan, life insurance, or long-term care insurance), you should contact those companies directly to update your address. They do not receive the Medicare address change automatically. Check the back of your insurance card or your policy documents for the phone number or mailing address to use. These companies maintain separate records from Medicare and need to hear from you directly.

Common mistakes to avoid

Do not assume your insurance company needs a separate address change — it does not. Many people call their Medicare Advantage or Part D plan to update their address, which is unnecessary and can cause confusion. Update once through Medicare, and you are done. The only exception is if you have supplemental insurance or other coverage outside Medicare, which requires a separate call.

Do not wait to update your address if you have moved. If mail sent to your old address bounces back, Medicare may flag your account or delay sending important documents like your new Medicare card or notices about plan changes. Update your address as soon as you know your new one, even if you are still in the process of moving. If you are between addresses temporarily, use a mailing address where you can receive mail reliably.

Do not forget to check your plan coverage if you are moving to a different state. Waiting until after you move to discover your plan is not available in your new location can leave you without coverage. Check before you move if possible, so you have time to switch plans if needed. Call 1-800-MEDICARE with your new address and ask which plans serve that area.

Frequently Asked Questions

How long does it take for my new address to show on my Medicare card?

Your new address takes effect in your Medicare account when ready if you change it online, or the same day if you call. However, your physical Medicare card with the new address printed on it takes one to three weeks to arrive in the mail. Your coverage uses your new address right away, so you do not need to wait for the new card to arrive before moving.

Do I need to tell my doctor's office about my address change?

You should contact your doctor's office directly to update your address in their records, separate from updating Medicare. Medicare does not share address changes with individual doctors or hospitals. Call your doctor's office and ask them to update your file. This ensures they have your correct address for appointment reminders and billing statements.

What if I move before my new Medicare card arrives?

Call 1-800-MEDICARE and update your address again with your new location. Your old Medicare card still works for coverage even if the address is wrong, but updating your address ensures mail reaches you. You can request a replacement card by phone if you need one before the next one arrives in the mail.

Can I change my address if I am in a hospital or nursing home?

Yes. You can update your address to the hospital or facility address while you are there, then change it again to your home address when you leave. If you are moving to a long-term care facility permanently, update your address to that location. Call 1-800-MEDICARE to make the change, or ask the facility's social worker or billing office to help you update it.

What if I do not have a permanent address right now?

Contact 1-800-MEDICARE and explain your situation. You can use a temporary address, a shelter address, or a mailing address where you can receive mail. Medicare will work with you to set up an address that allows you to receive important documents and your new Medicare card. You can update your address again once you have a permanent location.