What is Medicare Part B?

Medicare Part B provides coverage for doctor visits and other "outpatient" costs such as medical equipment and physical therapy. It also covers some preventive costs such as diabetes testing, glaucoma screening, and colon and prostate cancer screening.

Part B comes with a monthly premium you must pay; in 2010, the base premium is $96.40, only if you had SSA withheld in 2009. For all others, the 2010 base premium is $110.50. But if your adjusted gross income is above $85,000 (or $170,000 for married couples filing a joint tax return), you'll be hit with a supplemental premium that will add at least 40% to your cost.

Market indexes are shown in real time, except for the DJIA, which is delayed by two minutes. All times are ET. Disclaimer Morningstar: © 2014 Morningstar, Inc. All Rights Reserved. Disclaimer The Dow Jones IndexesSM are proprietary to and distributed by Dow Jones & Company, Inc. and have been licensed for use. All content of the Dow Jones IndexesSM © 2014 is proprietary to Dow Jones & Company, Inc. Chicago Mercantile Association. The market data is the property of Chicago Mercantile Exchange Inc. and its licensors. All rights reserved. FactSet Research Systems Inc. 2014. All rights reserved. Most stock quote data provided by BATS.