How to Enroll in Medicare
Where to sign up for Medicare (it's Social Security, not Medicare).
Medicare Phone Number
| Phone | (800) 633-4227 |
| Hours | 24 hours a day, 7 days a week |
| Website | www.medicare.gov |
USA Customer Care is an independent guide — not affiliated with Medicare. Official website: www.medicare.gov. Menus and numbers can change; always confirm on the official site.
Before You Begin
Many people call 1-800-MEDICARE to sign up and are surprised to be redirected — enrollment is actually handled by the Social Security Administration. Here is where to go and when.
What You’ll Need
Have ready before you apply:
- Your Social Security number
- Your date of birth and citizenship or residency information
- If you are still working: your employer group health-plan details
Step-by-Step
- Medicare enrollment is handled by Social Security, not the 1-800-MEDICARE line.
- Apply online at ssa.gov, or call Social Security at 1-800-772-1213 (Mon-Fri, 8am-7pm local time).
- Your Initial Enrollment Period is the 7 months around your 65th birthday (3 months before, your birth month, and 3 months after).
- Once enrolled, call 1-800-MEDICARE for coverage, plan, and claim questions.
Faster: Do It Online
The fastest way to enroll is online at ssa.gov/medicare — you can apply for Part A and Part B in under 30 minutes without a phone call.
How to Enroll in Medicare — FAQ
Your Initial Enrollment Period is the 7 months around your 65th birthday — the 3 months before your birth month, your birth month, and the 3 months after. Missing it can mean lifelong late penalties.
Social Security. Apply at ssa.gov or call (800) 772-1213. Use 1-800-MEDICARE only after you are enrolled, for coverage and plan questions.
Medicare Phone Numbers
| 1-800-MEDICARE (general help) | (800) 633-4227 24 hours a day, 7 days a week |
| TTY (deaf or hard of hearing) | (877) 486-2048 24 hours a day, 7 days a week |
| Medicare Fraud Hotline | (800) 447-8477 Mon-Fri, business hours |
More Medicare Guides
All Medicare contacts →Report an error · How we verify