The answer
Where do I enroll in Medicare?
You enroll in Medicare through the Social Security Administration, not through Medicare directly.
You can apply online at ssa.gov, by phone, or in person at a local Social Security office. Railroad retirees apply through the Railroad Retirement Board instead. This applies to Part A (hospital) and Part B (medical). Added coverage works differently: you enroll in a Part D drug plan, a Medicare Advantage plan, or a Medigap supplement through the insurance company offering it or with help from a licensed agent, not through Social Security. Knowing which door to use saves time and helps avoid gaps. To get help choosing and enrolling in added coverage, reach out to a licensed Goodsurance advisor at 1-888-301-8091 (TTY 711), Mon to Fri 8 am to 5 pm PT.