When Are You Eligible For Medicare At What Age? 
Assuming you are referring to Part A , you become eligible to enroll when you are three months shy of your 65th birthday . If you are under age 65 and have a qualified disability , you can also apply . If you have end-stage renal disease -LRB- ESRD -RRB- you can also apply for Medicare benefits . You automatically get Part A if you receive benefits from Social Security or the Railroad Retirement Board . Part B is optional and has similar qualification requirements . An experienced broker and / or their qualified website can offer additional specific information and free quotes from the top companies . 