Where to Find Your Medicare Number and What It Looks Like

Your Medicare number is on your Medicare card, in your online account, or available by phone from Medicare directly

Your Medicare number is a unique identifier that Medicare uses to track your coverage and claims. It appears on your physical Medicare card, which arrives in the mail when you first become may be able to access. If you have lost the card or need your number before it arrives, you can find it through your online Medicare account, by calling Medicare, or by checking documents Medicare has sent you.

The fastest way is usually your Medicare card itself — it is printed clearly on the front. If you do not have the card in front of you right now, the next fastest option is to log into your Medicare account online at Medicare.gov, where your number appears in your profile. If you do not have an online account yet, you can create one in about 10 minutes using your Social Security number and other identifying information.

Key Takeaways

Your Medicare number is printed on the front of your Medicare card, usually in the upper left corner.
You can view your Medicare number by logging into your account at Medicare.gov using your Social Security number and email address.
If you have lost your card and cannot access your online account, you can call Medicare at 1-800-MEDICARE (1-800-633-4227) and speak to a representative who will provide your number.
Your Medicare number stays the same for life unless you request a change, so you only need to find it once and write it down for future reference.

Finding your number on your Medicare card

Your Medicare card is a physical card that arrives in the mail. The card shows your name, your Medicare number, and the dates your coverage began. The Medicare number is usually printed in the upper left area of the card, below your name. It is a number followed by a letter — for example, 123-45-6789-A.

If you have received your card but cannot locate it, check your wallet, a drawer where you keep important documents, or any mail from Medicare. Medicare cards are small and straightforward to misplace. If you still cannot find it after searching your home, you will need to use one of the other methods below.

Accessing your number through your online Medicare account

You can create a free account on Medicare.gov and view your Medicare number, coverage details, and claims history anytime. To set up an account, go to Medicare.gov and click "Sign In" in the upper right corner. Select "Create an account" and follow the steps, which ask for your Social Security number, date of birth, email address, and a password you create.

Once you are logged in, your Medicare number appears on your profile page. You do not need to remember it — you can view it whenever you need it. This account also lets you check your claims, see what Medicare has paid, and update your contact information. If you have trouble creating an account, Medicare staff can help you set it up over the phone.

Calling Medicare to get your number

If you do not have your card and cannot access your online account, you can call Medicare directly at 1-800-MEDICARE (1-800-633-4227). This line is open 24 hours a day, 7 days a week. When you call, a representative will ask you to confirm your identity using your Social Security number, date of birth, and other personal information. Once they verify who you are, they will give you your Medicare number.

Wait times can be long during business hours, especially early in the morning or on Mondays. If you call during evening or early morning hours, you may reach someone faster. Have your Social Security number and date of birth ready before you call.

What your Medicare number looks like and what it contains

Your Medicare number is made up of two parts: a nine-digit number and a one-letter suffix. The nine digits are usually your Social Security number, though this is not always the case. The letter at the end indicates your relationship to the person who originally earned Social Security benefits — for example, A means you are the beneficiary, B means you are the spouse, and D means you are the widow or widower.

Starting in 2020, Medicare began issuing new cards with a different format that does not use your Social Security number. If you received your Medicare card after 2020, your number will be a random 11-digit number instead. Either format is valid — Medicare recognizes both old and new card numbers.

What to do if your Medicare card is lost or damaged

If your card is lost, stolen, or too worn to read, you can order a replacement. Log into your Medicare account at Medicare.gov, go to "Manage Your Health and Prescription Drug Coverage," and select "Order a replacement Medicare card." You can also call 1-800-MEDICARE to request one by phone. A new card usually arrives within 7 to 10 business days.

While you wait for your replacement card, you can still use your Medicare coverage. Doctors and hospitals can look up your coverage using your name, date of birth, and Social Security number. If you need proof of coverage before your new card arrives, you can print a temporary proof document from your online Medicare account or ask Medicare to mail one to you.

Keeping your Medicare number safe

Your Medicare number is sensitive information — it is linked to your health records and claims history. Treat it the way you would treat your Social Security number. Do not share it with anyone who calls you unexpectedly, even if they claim to be from Medicare. Real Medicare staff will never call you first asking for your number.

If you suspect someone has used your Medicare number fraudulently, call 1-800-MEDICARE right away. Medicare can flag your account and investigate. You can also report fraud to the Office of Inspector General at 1-800-HHS-TIPS (1-800-447-8477).

Frequently Asked Questions

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

On older Medicare cards issued before 2020, the nine-digit part of your Medicare number was your Social Security number. On newer cards issued from 2020 onward, your Medicare number is a random 11-digit number that is not your Social Security number. Both are valid — Medicare recognizes both formats.

Can I change my Medicare number?

You cannot change your Medicare number yourself. If you believe your number has been compromised or used fraudulently, call 1-800-MEDICARE and explain the situation. Medicare staff can investigate and may issue you a new number, though this is rare.

Do I need my Medicare number to see a doctor?

You should bring your Medicare card to every doctor visit. If you do not have your card, the office can usually look up your coverage using your name, date of birth, and Social Security number. However, having your card makes the process faster and reduces errors.

What if I cannot remember my Medicare.gov password?

Go to Medicare.gov, click "Sign In," and select "Forgot your password?" You will be asked to enter your email address. Medicare will send you a link to reset your password. Follow the link and create a new password. If you do not receive the email, check your spam folder or call 1-800-MEDICARE for help.

Can someone else get my Medicare number for me?

Medicare will only release your number to you or to someone you have authorized in writing. If you want a family member or caregiver to have access to your information, you can set up a representative payee or authorized representative through your Medicare account or by calling 1-800-MEDICARE.

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.