Medicare is a federal health insurance program for folks 65 and older, and under 65 with certain disabilities or end-stage renal disease (ESRD, aka kidney failure).
Its history takes us back to 1965, when President Lyndon B. Johnson signed a bill into law — allowing eligible individuals to get the healthcare benefits they needed from a government program. At first, the coverage was limited to Part A and Part B (called traditional or Original Medicare).
Over time, the coverage has expanded to cover more people. And now, more than 50 million Americans are on Medicare.
Original Medicare will provide coverage for 80% of your healthcare costs. There are supplemental policies that you can purchase to help with the remaining 20%.