Medicare is a federal health insurance program for people who are 65 or older, certain younger people with disabilities, and people with End-Stage Renal Disease (ESRD). It is administered by the Centers for Medicare & Medicaid Services (CMS). Medicare has four parts: Part A (hospital insurance), Part B (medical insurance), Part C (Medicare Advantage), and Part D (prescription drug coverage).
To apply for Medicare, you can visit the Social Security website or call Social Security at 1-800-772-1213. You can apply online at www.ssa.gov, by phone at 1-800-772-1213, or by mail. If you are applying by mail, you can download a form at www.ssa.gov or call 1-800-772-1213 to have one mailed to you.