Original Medicare
Part A is the hospital half, paying toward an admission, the skilled nursing that can follow it and some care brought to your door. Part B is the everyday half, covering office visits, outpatient work, lab tests and the equipment a doctor writes up. I like that both run straight through the federal program, so your card works wherever Medicare is taken. What I always flag is the leftover, because you keep owing a slice of almost every bill and nothing caps how large that slice grows in a year.