If you're under the age of 65 and you qualify for Medicare benefits due to a disability or End-Stage Renal Disease (ESRD), also known as kidney failure, is a condition that causes you to need dialysis or a kidney transplant. People with ESRD are eligible for Medicare coverage regardless of age. (ESRD), you may or may not be able to purchase Medicare Supplements are additional insurance policies that Medicare beneficiaries can purchase to cover the gaps in their Original Medicare (Medicare Part A and Medicare Part B) health insurance coverage. plans. It all depends on where you live. However, you absolutely will once you do turn age 65.