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Medicare Law: Medicare Part B

Medicare Part B covers medically necessary doctor's visits, preventative care, durable medical equipment, hospital outpatient services, lab tests, x-rays, mental health care, some home health and ambulance services.

It is a federal government program. You can use any provider who accepts Medicare. 

It is paid for by the monthly premiums and by the Supplementary Medical Insurance Trust Fund.

For enrollment periods, see the Medicare Part A page of this guide.