Where to Pay Your Medicare Bill Online

You can pay your Medicare bill online through the official Medicare website at Medicare.gov, or through your Medicare Advantage plan's website if you have one. The method depends on what type of bill you have — whether it is a Part B premium, a Part D prescription drug premium, or a bill from a Medicare Advantage plan.

If you receive a bill in the mail, it will tell you which payment method to use. Most bills show a website address and a customer service number. Do not use a website address from an email unless you typed it yourself into your browser — scammers send fake Medicare bills with links to theft sites.

You will need your Medicare number (on your red, white, and blue Medicare card) and a bank account or credit card. The payment goes through when ready, and you get a confirmation number on screen.

Key Takeaways

  • Part B and Part D premiums are paid through Medicare.gov or your plan's website, depending on your coverage type.
  • Medicare Advantage plans have their own payment websites — check your plan documents or the bill itself for the correct address.
  • You can set up automatic monthly payments so you never miss a due date.
  • Keep your confirmation number from each payment in case you need to prove you paid.
  • If you cannot pay the full amount, contact your plan or Medicare to ask about payment plans.

Paying Part B and Part D Premiums Through Medicare.gov

To pay a Part B or Part D premium through the official Medicare website, go to Medicare.gov/billing. You will see a section labeled "Pay Your Bill Online." Click on it and enter your Medicare number and date of birth.

The site will show you any outstanding balance. You can pay it once, or you can set up automatic monthly payments from your bank account. If you choose automatic payments, Medicare withdraws the amount on the same day each month, usually around the 25th. You can change or stop automatic payments anytime by logging back into the same page.

After you submit payment, you will see a confirmation number on your screen. Write this down or take a screenshot. If Medicare ever says you did not pay, this number proves you did.

Paying Through Your Medicare Advantage Plan's Website

If you have a Medicare Advantage plan (sometimes called Part C), your premiums go to your plan, not to Medicare directly. Each plan has its own website and payment system. Your plan name and website address are on your insurance card and on any bill you receive.

Log into your plan's member portal using your member ID number (also on your card). Look for a section called "Pay My Bill," "Make a Payment," or "Billing." Enter the amount and your payment method. Most plans accept bank account payments, debit cards, and credit cards.

Some Medicare Advantage plans also let you pay by phone. The phone number is on your bill and on your insurance card. A representative can take your payment over the phone and give you a confirmation number when ready.

Setting Up Automatic Monthly Payments

Automatic payments mean you never have to remember a due date. Medicare and most Medicare Advantage plans withdraw your premium from your bank account on the same day each month.

To set up automatic payments through Medicare.gov, go to the billing page, select your bill type, and choose "Automatic Bank Account Withdrawal." You will need to provide your bank's routing number and your account number (both appear on the bottom left of your checks). The withdrawal usually happens on the 25th of each month, but some plans use a different date — your bill will tell you which.

To set up automatic payments with your Medicare Advantage plan, log into your plan's website or call the number on your card. Ask to enroll in "automatic premium payment" or "autopay." You can cancel automatic payments anytime by contacting your plan or Medicare, but do this before the next withdrawal date so you do not get charged twice.

What to Do If You Cannot Pay the Full Amount

If you cannot pay your full premium by the due date, contact Medicare or your plan before the bill becomes overdue. Do not wait until after the important date.

For Part B or Part D bills, call Medicare at 1-800-MEDICARE (1-800-633-4227). For Medicare Advantage plans, call the number on your bill or insurance card. Explain your situation. Some plans offer payment plans that let you pay half now and half later, or spread the amount over several months.

If you miss a payment, your coverage may be delayed or cancelled. If this happens, you can usually restart coverage by paying what you owe, but there may be a gap in your protection. It is better to contact your plan early and work out a payment arrangement.

Keeping Track of Your Payments

Save every confirmation number you receive, whether you pay online or by phone. Keep these numbers in a folder or a document on your computer. If a question comes up later about whether you paid, you will have proof.

You can also check your payment history on Medicare.gov or your plan's website. Log in and look for "Payment History," "Billing History," or "Account Activity." This shows every payment you have made and the date it was processed.

If you set up automatic payments, check your bank statement each month to make sure the right amount came out on the right date. Mistakes are rare, but if you spot one, contact your plan or Medicare right away with your confirmation number and the date the payment was supposed to go through.

Avoiding Payment Scams

Scammers send fake Medicare bills that look real. They include a website address or phone number that looks official but is not. If you click the link or call the number, they ask for your Medicare number, Social Security number, or bank details.

The real Medicare website is Medicare.gov — type this address into your browser yourself rather than clicking a link in an email or text. Medicare will never ask for your full Social Security number or password by email or phone. If someone calls claiming to be from Medicare and asks for this information, hang up and call Medicare directly at 1-800-MEDICARE.

If you receive a bill in the mail and are not sure whether it is real, call the phone number on the bill using a number you look up yourself (not one provided in the bill). Or log into your Medicare account on Medicare.gov and check whether you actually owe money.

Frequently Asked Questions

Can I pay my Medicare bill by mail?

Yes. Your bill will include a mailing address and a payment coupon. Write a check or money order, include the coupon, and mail it to the address shown. Mail payments take longer to process than online payments — allow at least two weeks. Keep a copy of the coupon for your records.

What if I pay online but the payment does not show up in my account?

Online payments usually appear within one to three business days. If more than three days have passed, log back into your account and check your payment history. If the payment still does not appear, call the customer service number on your bill with your confirmation number. Do not pay again — the first payment may still be processing.

Do I have to pay my Medicare bill by the due date, or can I pay a few days late?

Pay by the due date shown on your bill. If you pay after that date, your coverage may be delayed or cancelled. If you know you will be late, contact your plan or Medicare before the due date to ask about a payment plan or extension.

Can I pay someone else's Medicare bill online?

You can pay if you have their Medicare number and permission, but most online systems require you to log in with the account holder's information. If you manage someone else's bills, ask their plan or Medicare whether you can set up a separate login or whether you need power of attorney to pay online.

What happens if I overpay my Medicare bill?

If you pay more than you owe, Medicare or your plan will credit the extra amount toward your next month's premium. You can also request a refund by calling customer service. Refunds usually take four to six weeks to arrive by mail.