Most people are eligible for Medicare benefits at age 65, although some people may be eligible at earlier ages. People who are eligible for Social Security disability benefits for at least 24 months before age 65 and those that suffer from certain specific diseases are also eligible for Medicare.
People suffering from end-stage renal disease, as well as those diagnosed with amyotrophic lateral sclerosis are eligible for Medicare benefits at any age. Prospective applicants can check for eligibility and calculate premiums on Medicare's official website, Medicare.gov. The Congressional Budget Office studied the option of increasing the standard age for Medicare eligibility from 65 to 67 but has not made a recommendation, as of 2015.