What is Medicare Part B?

Medicare Part B helps cover medical services like doctors' services, outpatient care, and other medical services that Part A doesn't cover. Part B is optional. Part B helps pay for covered medical services and items when they are medically necessary. Part B also covers some preventive services like exams, lab tests, and screening shots to help prevent, find, or manage a medical problem.

Cost: If you have Part B, you pay a Part B premium each month. Most people will pay the standard premium amount. If you don't sign up for Part B when you are first eligible, you may have to pay a late enrollment penalty.

For more information about enrolling in Medicare, look in your copy of the "Medicare & You" handbook, call Social Security at 1-800-772-1213, or visit your local Social Security office. If you get benefits from the Railroad Retirement Board (RRB), call your local RRB office or 1-800-808-0772.

Learn More:

• Top 5 things you need to know about Medicare Enrollment