Medicare Part B is a part of the federal health insurance program that helps cover outpatient medical services. This includes doctor visits, preventive care, and some medical equipment. Most people pay a monthly premium for Part B, which helps cover a portion of their healthcare costs. Part B also covers certain tests, screenings, and vaccinations, making it essential for maintaining health. It works alongside Medicare Part A, which covers hospital stays, to provide comprehensive coverage for seniors and individuals with disabilities. Understanding Part B is crucial for managing healthcare expenses effectively.