Gubernatorial hopeful Dr. Donald Berwick speaks at the Massachusetts Democratic Party Platform Convention in July. Aram Boghosian/Boston Globe via Getty Images hide caption

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Presenting Marilyn Tavenner, the first official official in charge of the Centers for Medicare and Medicaid Services in years. Manuel Balce Ceneta/AP hide caption

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Health and Human Services Secretary Kathleen Sebelius (center), flanked by Centers for Medicare and Medicaid Services Acting Administrator Marilyn Tavenner (left) and Food and Drug Administration Commissioner Margaret Hamburg, speaks during a budget briefing in Washington on Wednesday. Manuel Balce Ceneta/AP hide caption

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Arkansas Gov. Mike Beebe speaks at a rally promoting the expansion of Medicaid in the state in front of the Capitol in Little Rock on March 7. Danny Johnston/AP hide caption

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Luz Sepada, 59, lives in South Tucson, Ariz. Before the University of Arizona Health Plan assumed control of her medical care, Sepada was hospitalized 10 times in one year. After she was assigned a UAHP case manager, Sepada has been able to stay at home with no trips to the emergency department. Sarah Varney/KHN hide caption

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The majority of what happens on Jan. 1, 2013, is tax increases and cuts in tax deductions to pay for the changes coming in 2014. iStockphoto.com hide caption

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Rep. Henry Waxman, D-Calif., speaks Tuesday at a news conference calling for no reduction in the Medicare and Medicaid budgets, as part of the year-end budget talks on Capitol Hill in Washington. Waxman said he does not support means testing for Medicare. Joshua Roberts/Reuters /Landov hide caption

itoggle caption Joshua Roberts/Reuters /Landov

Sen. Tom Harkin, D-Iowa, speaks Tuesday as Rep. Elijah Cummings, D-Md., Sen. Sheldon Whitehouse, D-R.I., Sen. Al Franken, D-Minn., and Sen. Ben Cardin, D-Md., listen during a news conference on Capitol Hill calling for no reduction in the Medicare and Medicaid budgets as part of the year-end budget talks. Joshua Roberts/Reuters /Landov hide caption

itoggle caption Joshua Roberts/Reuters /Landov

Increasingly, companies are contracting with Medicare exchanges to try to ease the transition for their former employees. Michael McCloskey/iStockphoto.com hide caption

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President Obama and Republican presidential candidate Mitt Romney first debated Medicare on Oct. 3. Saul Loeb/AFP/Getty Images hide caption

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Vice President Biden (left) and Republican vice presidential candidate Paul Ryan during Thursday's debate. Saul Loeb/AFP/Getty Images hide caption

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Rep. Paul Ryan, R-Wis., points to piles of the health care overhaul legislation during a markup hearing before the U.S. House Budget Committee last year in Washington, D.C. Alex Wong/Getty Images hide caption

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