For Consumers

How do I know what Medicare paid?

Medicare summary notice

People with Original Medicare will receive a Medicare Summary Notice (MSN) in the mail every three months for their Medicare Parts A and B-covered services. This is strictly a notice, not a bill.

The MSN shows:

  • All your services or supplies that providers and suppliers billed to Medicare during the three-month period;
  • What Medicare paid; and
  • The maximum amount you may owe the provider.

Here is an example of what the MSN envelope looks like:

Sample Medicare summary notices

When you'll receive it

Every three months, Medicare will send you an MSN, but only if you received services or medical supplies during that three-month period.

How to change your address

If you change your address, you should notify:

What to do with the notice

  • If you have other insurance, check to see if it covers anything that Medicare didn’t.
  • Keep your receipts and bills, and compare them to your MSN to be sure you got all the services, supplies, or equipment listed.
  • If you paid a bill before you got your notice, compare your MSN with the bill to make sure you paid the right amount for your services.
  • If an item or service is denied, call your medical provider's office to make sure they submitted the correct information. If not, the office may resubmit.
  • If you disagree with any decision made, you can file an appeal. On the last page of the MSN there are step-by-step directions on when and how to file an appeal.

Access your MSN online

You can sign up for an account at and:

  • View Medicare Parts A and B claim information
  • Order duplicate MSNs
  • View your account information
  • Track your claims
  • Track your preventive services
  • Add provider information