People who are eligible for Medicare coverage include U.S. citizens or legal residents age 65 or older who are eligible for Social Security. Some people can also qualify under the age of 65 if they are eligible for Social Security benefits, receive a disability pension, have Lou Gehrig's disease or have kidney failure, as reported by the AARP.
In order to be eligible for Social Security and therefore Medicare, potential recipients must work for at least 10 years. Potential recipients can also be eligible through their spouses' work history.
Potential recipients can find out whether or not they are eligible for Medicare by using the Medicare calculator feature on the official Medicare government website. They can then find out whether they are eligible for Medicare Part A or Part B and apply online, according to the Medicare website.