You get your Medicare card in the mail after you turn 65 or become may be able to access through disability or end-stage renal disease

Medicare sends your card automatically — you do not have to request it. The card arrives by mail, usually within two weeks after your coverage starts. If you turned 65 and enrolled during your initial enrollment period, your card typically comes before your coverage begins on the first of the month. If you enrolled late or became may be able to access through disability, the timing depends on when Social Security processed your claim.

Your card shows your Medicare number, which stays the same for life. Starting in 2024, new cards no longer include your Social Security number — they use a unique Medicare number instead, which is safer. If you already have an older card with your Social Security number on it, you can keep using it; you do not need to replace it unless it is damaged or lost.

Key Takeaways

  • Medicare mails your card automatically after your coverage starts; you do not need to do anything to receive it.
  • The card usually arrives within two weeks, but you can use your coverage before it arrives by showing your Social Security card and ID at the doctor or pharmacy.
  • If your card does not arrive within three weeks, you can view your Medicare number online through your Medicare account or call 1-800-MEDICARE.
  • Replacement cards are free and take one to two weeks; you can order one online, by phone, or by mail if yours is lost, stolen, or damaged.
  • Your Medicare number is permanent and does not change, even if you move, change plans, or update your personal information.

How to use Medicare before your card arrives

You do not have to wait for your card to start using your coverage. On the day your Medicare begins, you can go to the doctor, hospital, or pharmacy and use your benefits right away. Bring your Social Security card and a photo ID — most providers can look up your Medicare information using your Social Security number and verify your coverage in their system.

If a provider cannot find your information, ask them to call Medicare directly at 1-800-MEDICARE to confirm your coverage. This happens rarely, but it is more common in the first few days after coverage starts. Pharmacies in particular sometimes need a few days for their systems to update, so if you need a prescription filled urgently, call ahead to let them know you are newly covered.

What to do if your card does not arrive on time

If three weeks have passed and your card has not arrived, check your Medicare account online first. Go to Medicare.gov, sign in with your username and password, and look for your Medicare number under "My Health Information." You can use this number right away — you do not have to wait for the physical card.

If you do not have an online account, call 1-800-MEDICARE and tell them your card has not arrived. They can confirm your coverage and give you your Medicare number over the phone. Keep a note of the number in a safe place. You can also ask the representative to remail your card or to check whether it was returned to Medicare as undeliverable — this sometimes happens if your address changed recently.

If you moved after you enrolled, update your address with Social Security as soon as you can. Go to ssa.gov, call Social Security at 1-800-772-1213, or visit your local Social Security office. Medicare uses the address Social Security has on file, so if it is wrong, your card will go to the old address.

Ordering a replacement card

Replacement cards are free. You can order one online, by phone, or by mail. The fastest way is online through Medicare.gov — sign in to your account, go to "My Health Information," and select "Order a replacement card." The card will arrive in one to two weeks.

If you do not have an online account, call 1-800-MEDICARE and ask for a replacement. You will need to verify your identity by providing your name, date of birth, and Social Security number. By mail, fill out Form CMS-582 (process for a Medicare Card) and send it to the address on the form — this takes longer, usually two to three weeks.

You can order a replacement for any reason: your card is lost, stolen, damaged, or you straightforward want a new one. There is no limit to how many times you can request one.

Understanding your Medicare number

Your Medicare number is yours for life and does not change. It stays the same even if you move, change your name, switch Medicare plans, or update your address. This is different from your Social Security number, which you should not give out unless necessary.

New Medicare cards issued after 2024 show a unique Medicare number that is not tied to your Social Security number. If you have an older card with your Social Security number on it, you can still use it — there is no important date to replace it. However, if you are concerned about privacy, you can order a new card with the updated number at any time.

Your Medicare number appears on all your bills, explanation of benefits statements, and insurance documents. Keep it in a safe place, just as you would your Social Security number. If someone asks for it, make sure they are actually from Medicare, your doctor's office, your insurance company, or another organization you trust.

What happens if your information changes

If you change your name, address, or phone number after you get your Medicare card, you do not need a new card. Your Medicare number stays the same. However, you do need to tell Social Security about the change so your records match.

Update your information with Social Security by visiting ssa.gov, calling 1-800-772-1213, or going to your local Social Security office. Social Security shares this information with Medicare, so your Medicare records will update automatically. This usually takes a few days.

If you change your Medicare plan — for example, switching from Original Medicare to a Medicare Advantage plan — you keep the same Medicare number. Your new plan will send you a new insurance card showing their plan name and member ID, but your underlying Medicare number does not change.

Protecting your Medicare card and number

Treat your Medicare card like you would your credit card. Do not carry it in your wallet every day unless you have an appointment coming up. Keep it at home in a safe place, and bring it only when you need it for a doctor visit or hospital stay.

Be cautious about sharing your Medicare number. Legitimate organizations — your doctor, hospital, pharmacy, or insurance company — will ask for it. Scammers also call and pretend to be from Medicare, so remember: Medicare will never call you first asking for your number or personal information. If someone calls claiming to be from Medicare, hang up and call 1-800-MEDICARE yourself to verify.

If your card is lost or stolen, order a replacement right away. There is no charge, and a new card will arrive within one to two weeks. In the meantime, you can still use your coverage by providing your Social Security number and ID at the doctor or pharmacy.

Frequently Asked Questions

Can I use my Medicare coverage before my card arrives?

Yes. Your coverage starts on the date Medicare says it does, regardless of whether you have received the physical card. Bring your Social Security card and photo ID to your doctor, hospital, or pharmacy, and they can look up your coverage in their system. If they cannot find it, they can call Medicare at 1-800-MEDICARE to confirm.

What if I never received my Medicare card?

Check your Medicare account online at Medicare.gov to find your Medicare number — you can use this number when ready. If you do not have an online account, call 1-800-MEDICARE and they will give you your number over the phone. You can order a free replacement card online, by phone, or by mail.

Do I need to replace my old Medicare card that has my Social Security number on it?

No. You can keep using your old card for as long as it is in good condition. New cards issued after 2024 use a unique Medicare number instead of your Social Security number for privacy, but there is no important date to switch. You can order a new card anytime if you prefer.

What should I do if my address changed after I enrolled in Medicare?

Update your address with Social Security right away by visiting ssa.gov, calling 1-800-772-1213, or visiting a local Social Security office. Medicare uses the address Social Security has on file. If your card was mailed to an old address, you can order a replacement once your address is corrected.

Is there a fee to order a replacement Medicare card?

No. Replacement cards are always free. You can order one online through Medicare.gov, by calling 1-800-MEDICARE, or by mailing Form CMS-582. There is no limit to how many times you can request a replacement.