Medicare has four different parts: A, B, C, and D. Parts A and B, also known as Original Medicare, provide coverage for inpatient and outpatient services. If necessary, you can enroll in one of the ten Medicare Supplement Plans, which will cover most, if not all, of the costs not paid for by Original Medicare.
Part C, also known as Medicare Advantage, consists of the same coverage as Original Medicare but includes extra coverage such as prescription drug, dental, vision, and hearing coverage.
Part D is the prescription drug coverage plan. It can be purchased as a standalone plan or through Medicare Advantage as an extra benefit.