House Speaker John Boehner of Ohio leaves the House chamber on Capitol Hill in Washington, after House Republicans passed a measure Friday that would overhaul the system Medicare uses to pay doctors. J. Scott Applewhite/AP hide caption

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A snippet of the data ProPublica obtained from the federal government about Medicare Part D, the prescription drug benefit for seniors. ProPublica hide caption

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Pill bottles in a locked room deep inside the building that houses the Los Angeles County Health Authority Law Enforcement Task Force. Tracy Weber/ProPublica hide caption

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Dr. Ernest Bagner III stands outside his former office tucked in the back corner of a strip mall in Hollywood, Calif., where he says he was the victim of Medicare fraud. Jonathan Alcorn/ProPublica hide caption

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It's health results — not the number of treatments — that should count, leaders say. iStockphoto hide caption

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Before you have get a new hip, you might want to check the government's list of best and worst hospitals for the operation. iStockphoto hide caption

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President Obama and House Speaker John Boehner of Ohio talk with reporters at the White House after a meeting about the federal budget deficit and economy in Nov. 2012. Some Republicans have proposed raising the Medicare eligibility age to 67. Carolyn Kaster/AP hide caption

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Protesters fill the Miami office of state Rep. Manny Diaz Jr. on Sept. 20 to protest his stance against expansion of health coverage in Florida. Joe Raedle/Getty Images hide caption

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