Medicare usually covers services and supplies that are medically necessary. Coverage also depends on where you get care (hospital inpatient, outpatient, doctor’s office, rehab facility, home) and which type of Medicare you have. Medicare Advantage plans must cover what Original Medicare covers, but may have extra rules like networks and prior authorization. Always confirm benefits before big tests or procedures.

In simple terms, Part A generally helps when you’re admitted as an inpatient to a hospital (and certain facility-based care after a hospital stay). Part B generally covers doctor visits, many tests, and outpatient services. The setting and your patient status matter because they affect both coverage and cost-sharing.

Medicare usually covers medically necessary visits with doctors and specialists under Part B (for Original Medicare). If you have Medicare Advantage, the plan still covers these services, but you may need to follow network and referral rules.