Medicare Part B, also known as "Medical Insurance," helps cover essential outpatient and medical services. Part B covers doctor visits, preventive services, outpatient care, medical supplies, and some home health services. Unlike Medicare Part A, which is usually premium-free, Part B requires a monthly premium based on income. Medicare Part B is available to people aged 65 and older, as well as to younger individuals with qualifying disabilities or conditions. It plays a crucial role in helping beneficiaries access regular and preventive healthcare outside of hospital settings, supporting long-term health and early treatment of medical issues.