You can go on Medicare at age 65. If you have been disabled for two years you can go on Medicare at that time, regardless of your age.You may be able to go on Medicare prior to age 65 if you have end stage renal disease or have Lou Gherig's disease, under certain conditions.ou may be able to go on Medicare prior to age 65 if you have end stage renal disease or have Lou Gherig's disease, under certain conditions.