When you become eligible for Medicare is a sort of "it depends". Mostly 65 is the answer.
If you are working for a company that provides medical insurance, generally speaking it depends on how the insurance covers you. Some insurers require you to sign on to Medicare at 65, some do not. Some will be primary coverage and Medicare, if you sign up for it, will be secondary. Some employers medical insurance stops coverage for employees when they become eligible for Medicare. If you are working you need to talk with your HR people AND read the insurance booklet you get each year.
If you are retired, mostly Medicare is primary if you have another health insurance. In any case, you MUST notify both insurers that you are covered by Medicare and another plan. These then coordinate benefits per Law and insurers stated benefits.
Again talking with the insurance provider and Medicare are the ONLY safe ways to be sure of the facts. ALWAYS ask for the explanation in writing (one never knows...)
If you are working for a company that provides medical insurance, generally speaking it depends on how the insurance covers you. Some insurers require you to sign on to Medicare at 65, some do not. Some will be primary coverage and Medicare, if you sign up for it, will be secondary. Some employers medical insurance stops coverage for employees when they become eligible for Medicare. If you are working you need to talk with your HR people AND read the insurance booklet you get each year.
If you are retired, mostly Medicare is primary if you have another health insurance. In any case, you MUST notify both insurers that you are covered by Medicare and another plan. These then coordinate benefits per Law and insurers stated benefits.
Again talking with the insurance provider and Medicare are the ONLY safe ways to be sure of the facts. ALWAYS ask for the explanation in writing (one never knows...)