En español | The standard Part B premium is $104.90 in 2015.
Part B helps pay for doctors' services and outpatient care. It also covers other medical services, such as physical and occupational therapy, and some home health care.
Since 2007, those with a higher-income pay higher Part B premiums. The premium they pay is based on the income they report on their most recent federal tax return. Only single persons with an income greater than $85,000 and married couples with an income greater than $170,000 will pay these higher monthly premiums. However, less than 5 percent of people with Medicare are affected, so most people will not pay higher premiums. Costs are for Original Medicare.