Medicare Enrollment Guide
Everything you need to know about enrolling in Medicare.
Enroll Online
Apply for Medicare at SSA.gov →Medicare Enrollment Periods
Initial Enrollment Period
7-month window around your 65th birthday
General Enrollment Period
January 1 - March 31 each year
Open Enrollment (MA/Part D)
October 15 - December 7 each year
Need Help Enrolling?
1-800-772-1213
Social Security • Mon-Fri 8AM-7PM