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

itoggle caption Sarah Varney/KHN

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

itoggle caption Michael McCloskey/iStockphoto.com

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

itoggle caption Saul Loeb/AFP/Getty Images

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

itoggle caption Saul Loeb/AFP/Getty Images

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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A key legal case challenging cuts in Medicaid pay for doctors, hospitals and pharmacists is heading back to California. Keith J. R. Binns/iStockphoto.com hide caption

itoggle caption Keith J. R. Binns/iStockphoto.com

A screen grab from "America the Beautiful" by The Agenda Project. According to PolitiFact, videos like this one used elderly actors to falsely suggest that Rep. Paul Ryan's Medicare plan would adversely affect current senior citizens. The Agenda Project/YouTube hide caption

itoggle caption The Agenda Project/YouTube