If you are 65 or older, and have qualified for Medicare based on residency and tenure in the Social Security system, you can remain on Medicare for life unless you opt out.
If you are under 65 and on Medicare due to a disability that qualifies under Social Security, you continue on Medicare as long as you are disabled.
If you are under 65 and on Medicare due to a disability that qualifies under Social Security, you continue on Medicare as long as you are disabled.