Medicare Part B covers doctors visits, preventive services and medically necessary supplies, reports Medicare.gov. It also covers ambulance services, clinical research studies, inpatient and outpatient mental health care, second opinions before surgery, and some outpatient prescription drugs.
Medicare Part B covers doctor visits and other services to diagnose and treat injuries, illnesses and diseases, according to Medicare.gov. Preventive services include screenings for cardiovascular disease, cancer, diabetes and sexually transmitted diseases. It also offers screening and counseling for alcohol misuse, tobacco use, depression and obesity. It provides preventive flu, hepatitis B and pneumococcal shots. It covers doctor-prescribed durable medical equipment such as wheelchairs, hospital beds, oxygen equipment, walkers and blood sugar monitors.
Medicare Part B covers emergency ambulance transportation to a hospital or skilled nursing facility, explains Medicare.gov. It covers some of the cost of patient participation in clinical research studies to test new treatments. It also covers visits to mental health professionals, including psychiatrists, psychologists, clinical social workers, nurse practitioners and physician assistants. Additionally, it covers a limited inpatient stay in a psychiatric hospital.
Medicare Part B covers some outpatient prescription drugs administered in doctors' offices or hospital outpatient situations, states Medicare.gov. If a primary health care provider recommends medically necessary surgery, Medicare Part B covers a visit to another doctor to get a second opinion, as long as the second doctor accepts Medicare.