To sign up for Medicare Part A (hospital insurance) and/or Medicare Part B (Medical Insurance), you need to contact the Social Security Administration (SSA).
You need to sign up through Social Security (or, in some cases, through the Railroad Retirement Board) so they can verify your eligibility for Medicare. They will also check to make sure you paid Medicare taxes long enough to get Part A without having to pay a monthly premium.
If you’re 65 or older, you can sign up for Medicare online and enroll in Parts A and B, or in Part A only. You can delay Part B if you’re already covered through an employer group health plan.
If you have previously declined or never signed up for Part B, you can sign up for Part B only.
For more information, contact the SSA:
Social Security Administration
1-800-772-1213
1-800-325-0778 (TTY)
Monday – Friday, 8 am – 7 pm