Sign up at the start of your initial enrollment period
Some people—including those who started to receive Social Security or other benefits before turning 65—are automatically signed up for Medicare Parts A and B. Everyone else has to enroll on their own.
Make sure you sign up for Medicare coverage as soon as you’re eligible by enrolling early in your Initial Enrollment Period. This seven-month period includes: the three months before the month you turn 65; the month you turn 65; and the three months following that birthday.
If you enroll during the first three months of your enrollment period, your coverage will begin sooner than if you sign up later in the enrollment period.
To enroll, visit your local Social Security office or call Social Security at (800) 772-1213.