When Do I Enroll In Medicare? 
You enroll in Medicare when you decide to retire and/or if your employer tells you they will not cover you on their group plan after age 65 . When you turn 65 you automatically get Part A . If you will remain on a company group plan then it 's best to postpone Part B until you decide to retire . If your benefits department tells you they do not offer benefits once you turn 65 then you would get both Medicare Part A & B . You should also look into a Medicare Supplement Plan at the same time because Part A & B only will cover about 80 % . You can start reviewing your options 6 months out so you will have plenty of time to make a decision . Medicare along with a Medicare Supplement Plan is actually great insurance . Most people find that the benefits are equal to or greater than what you had with your company group plan . If you pay for your group benefits or are on an individual/family policy you may even save money when you go onto Medicare with a supplement . 