Where to Find Your Medicare Number and What It Looks Like

Your Medicare number is on your Medicare card, in your Social Security statement, and in letters from Medicare

Your Medicare number is a unique identifier that Medicare uses to track your account and process claims. It appears on the front of your physical Medicare card — a blue-and-white card mailed to you by Medicare. If you have lost the card or cannot locate it right now, you can find your number in other places without ordering a replacement.

The number itself is either 11 digits (if you enrolled before 2015) or your Social Security number plus two letters (if you enrolled in 2015 or later). Knowing where to look takes only a few minutes and saves you from waiting for a new card to arrive.

Key Takeaways

Your Medicare number appears on the front of your blue Medicare card, usually in the upper left corner.
If you cannot find your card, you can view your number by logging into your Medicare.gov account with your username and password.
Medicare also prints your number on any official letter they send you, including your initial enrollment notice and annual notices.
You will need your Medicare number when scheduling doctor visits, filling prescriptions, or contacting Medicare about your account.
If your card is damaged or lost, you can request a replacement through Medicare.gov or by calling 1-800-MEDICARE (1-800-633-4227).

Check your physical Medicare card first

The easiest place to find your Medicare number is on your Medicare card itself. Look at the front of the card — your number appears in the upper left corner, printed in large text. The card is blue and white and has your name, date of birth, and sex listed as well.

If you have had Medicare for several years, your card may be worn or faded. Hold it up to good light and look carefully. The number is always in the same location on every Medicare card. If the card is too damaged to read, you will need to use one of the other methods below.

Log into your Medicare.gov account online

If you have created a Medicare.gov account, you can view your Medicare number by signing in. Go to Medicare.gov, click "Sign In" in the upper right corner, and enter your username and password. If you do not have an account yet, you can create one using your email address and a password you choose.

Once you are signed in, look for a section labeled "My Health Information" or "My Medicare." Your Medicare number will be displayed there along with your coverage details. This method works at any time of day and takes less than a minute if you remember your login information.

If you have forgotten your Medicare.gov password, click "Forgot Username or Password?" on the sign-in page. Medicare will send you a link to reset it. You will need access to the email address you used to create the account.

Look for your number in Medicare letters and documents

Medicare sends official letters to your home address throughout the year. These letters include your initial enrollment notice (sent when you first became may be able to access), your annual "Important Notice About Your Rights and Protections," and notices about changes to your coverage or premiums. Your Medicare number appears on all of these documents.

Check any folder or drawer where you keep medical or insurance paperwork. Look for envelopes with the Medicare logo or the words "Centers for Medicare & Medicaid Services" on them. Your number will be printed near the top of the letter, often next to your name.

Call Medicare directly if you cannot locate it

If you have tried the methods above and still cannot find your number, you can call Medicare and speak with a representative. Call 1-800-MEDICARE (1-800-633-4227). Have your Social Security number and date of birth ready when you call — Medicare will use these to look up your account and read your number to you.

Medicare's phone lines are open Monday through Friday, 8 a.m. to 8 p.m. Eastern time. Wait times are usually shorter early in the morning or late in the afternoon. If you are deaf or hard of hearing, call 1-877-486-2048 (TTY).

Request a replacement card if yours is lost or damaged

If your Medicare card is lost, stolen, or too damaged to use, you can order a replacement through Medicare.gov. Sign into your account, go to "My Health Information," and look for an option to order a new card. You can also call 1-800-MEDICARE to request one by phone.

A replacement card usually arrives within 7 to 10 business days. While you wait, you can use your Medicare number from any of the sources listed above — you do not need the physical card to see a doctor or fill a prescription. Your insurance coverage does not change while a new card is on the way.

What to do with your Medicare number once you have it

Write your Medicare number down in a safe place, or save it in a password-protected note on your phone or computer. You will need it when you schedule appointments with doctors, dentists, and other providers. You will also need it when you fill prescriptions at a pharmacy and when you contact Medicare with questions about your coverage or claims.

Do not share your Medicare number with anyone who calls you unexpectedly or asks for it by email or text. Medicare representatives will never contact you first asking for your number. If someone calls claiming to be from Medicare and asking for your information, hang up and call 1-800-MEDICARE yourself to report it.

Frequently Asked Questions

Is my Medicare number the same as my Social Security number?

Not always. If you enrolled in Medicare before 2015, your Medicare number is different from your Social Security number. If you enrolled in 2015 or later, your Medicare number is your Social Security number plus two letters. Either way, your Medicare card will show the correct number to use.

Can I use my old Medicare number if I moved to a new state?

Yes. Your Medicare number stays the same no matter where you live. You do not need a new number when you move. However, your coverage may change depending on which state you move to, so contact Medicare to update your address.

What if I think someone has stolen my Medicare number?

Call 1-800-MEDICARE right away and tell them your number may have been compromised. They can flag your account and monitor it for fraud. You can also file a report with the Federal Trade Commission at IdentityTheft.gov. Keep a record of the date and time you reported it.

Do I need my Medicare number to schedule a doctor's appointment?

Most doctor's offices will ask for it, but some may only need your name and date of birth. It is easiest to have your number ready when you call. If you do not have it with you, the office can usually look it up using your Social Security number.

How often does Medicare send you a new card?

Medicare sends you a new card only if you request one or if your coverage changes significantly. You do not receive a new card automatically each year. Your current card remains valid as long as your Medicare coverage is active.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.