If you have Original Medicare, you will receive an MSN in the mail every 3 months for your Medicare Part A and Part B covered services. Keep in mind that Medicare often provides separate MSNs for Part A and Part B covered services. The MSN will list the services or supplies that providers and suppliers billed to Medicare during the 3-month period, what Medicare paid, and the maximum amount you may owe the provider. If you do not receive any services or medical supplies during that 3-month period, you will not get an MSN for that particular 3-month period. You can also create an account at www.mymedicare.gov and view your MSNs online at any time.
If you have a Medicare Advantage Plan, you may receive EOBs on a monthly basis (if you received services). Other plans send an EOB for each claim and then a quarterly summary of your health claims, and give you the option of creating an online account that allows you to access your EOB any time. Your EOB tells you how much your provider billed, the approved amount your plan will pay, and how much you have to pay. While all EOBs provide the same basic information, the layout and other specifics may vary. If your EOB shows that an item or service is not being covered, look for a section that includes footnotes, comments, or remarks to find out the reason why. You should contact your plan to get more information if any of your services or items were not covered.