With Medicare, timing is key. If you already get a Social Security or Railroad check for retirement, you'll automatically be enrolled in Original Medicare. You don’t need to apply. If you're automatically enrolled, you'll get your Medicare card in the mail three months before your 65th birthday.

Otherwise, there are certain periods when you can sign up for Medicare, Medicare Advantage and Medicare Supplement plans.

Do I need to sign up for Medicare Part A and Part B?

How can I sign up for Part A and Part B?

Initial Enrollment Period

General Enrollment Period

Annual Enrollment Period

Medicare Advantage Enrollment Period

Special Enrollment Periods