how early do you have to sign up for medicare?
Part A & Part B sign up periods. When you first get Medicare. When you're first eligible for Medicare, you have a 7-month Initial Enrollment Period to sign up for Part A and/or Part B. Example. For example, if you're eligible for Medicare when you turn 65, you can sign up during the 7-month period that: Begins 3 months before the month you turn 65.