Which type of services does Medicare Part B primarily cover?

Medicare Part B is designed to provide coverage for a variety of outpatient services, which is why the option focusing on outpatient services, including doctor visits and therapy, is the correct choice. It is essential for beneficiaries seeking preventive care, diagnostic tests, and outpatient procedures to have access to these services to effectively manage their health.

This coverage includes preventive services such as vaccinations and screenings, as well as routine medical visits where patients can receive diagnoses and treatment plans. Therapy services under Medicare Part B extend to physical, occupational, and speech therapy, which are crucial for rehabilitation and recovery without the need for hospitalization.

The other options do not accurately reflect Part B's coverage. Inpatient hospital care and rehabilitation fall under Medicare Part A, which handles services requiring hospital stays. Long-term care facilities and nursing homes are primarily covered by Medicaid or, in specific cases, by Medicare Part A for a limited time post-hospitalization. Emergency room services are not solely covered by Part B, as they are typically included in the broader coverage provided by Part A for inpatient admissions, although Part B may cover some related outpatient follow-up care.