Which Medicare part covers outpatient care and preventive services?

Medicare Part B is designed specifically to cover outpatient care and preventive services, which includes routine doctor's visits, outpatient hospital services, certain home health care, and necessary preventive services such as vaccinations and screenings. This part of Medicare focuses on maintaining health and preventing illness, making it distinct from other parts that deal with different aspects of health care.

Part A primarily covers inpatient hospital stays, skilled nursing facility care, hospice services, and some home health care—so it does not focus on outpatient care or preventive services. Part C, also known as Medicare Advantage, combines coverage from Parts A and B and often includes additional benefits, but it is not specifically tied to outpatient services in the way that Part B is. In contrast, Part D is dedicated to providing prescription drug coverage and does not encompass outpatient or preventive services.

Thus, Part B's emphasis on outpatient care and preventive measures makes it the correct answer to the question.