Is It Mandatory To Apply For Medicare At 65? 
If you are receiving Social Security benefits at age 65 , you will be signed up for Medicare Part A and Part B automatically . When you get the packet in the mail , you will have a form that you can use to turn down Part B . At this time you can also opt out of Part A , but it is free and covers very expensive hospitalization costs , so you would be advised to keep it , or have very other good health insurance if you turned it down . If you are not yet receiving Social Security benefits at age 65 , it is not mandatory to apply for Medicare Part A or B at that time . However , it is again , advisable to at least get Part A . 