Frequently Asked Questions About Medicare Find out what Medicare is, how to get it, and who to contact. How Does Medicare Work? Do I need Part A or Part B if I am still working? Which doctors accept Medicare assignment? What is the “Welcome to Medicare” physical exam? How do I change my address through Social Security? How do I report a Medicare beneficiary’s death? How do I report disability fraud? Do I need to renew my Medicare coverage? How do I get a new Medicare card?