Medicare enrollment window calculator
Enter your birth date to see your 7-month Initial Enrollment Period for Medicare.
If you already receive Social Security benefits, you are enrolled in Parts A and B automatically.
Your initial enrollment period
Seven months: the three months before the month you turn 65, your birthday month and the three months after. Signing up late for Part B can mean a lifelong penalty unless you have qualifying coverage through current employment.
How to sign up
- Online at ssa.gov.
- By phone at 1-800-772-1213.
- At the Reno office, by appointment.
Plan choices
SSA handles enrollment, not plan selection. To compare plans in Nevada, use Medicare.gov or your State Health Insurance Assistance Program (SHIP).
Frequently asked questions
Am I enrolled automatically?
Yes, if you already receive Social Security or Railroad Retirement benefits when you turn 65.
Last reviewed: October 15, 2026. Office address, phone and hours come from the Social Security Administration field office list. Rules and services can change: confirm on ssa.gov before you go.