Patients wait in line at Nuestra Clinica Del Valle in San Juan, Texas, in September 2012 file photo. A study released on Wednesday finds that immigrants, particularly noncitizens, heavily subsidize Medicare, and that policies that restrict immigration may deplete Medicare's financial resources. Eric Gay/AP hide caption

itoggle caption Eric Gay/AP

Average hospital charges for a major joint replacement, such as an artificial hip, vary widely, as this map from the federal Centers for Medicare & Medicaid Services shows. HHS hide caption

itoggle caption HHS

Seniors in the Southeast were much more likely to be prescribed more than one high-risk medications in 2009. Danya Qato and Amal Trivedi/Alpert Medical School, Brown University hide caption

itoggle caption Danya Qato and Amal Trivedi/Alpert Medical School, Brown University

President Obama's budget plan for fiscal year 2014 may include a proposal for Medicare patients to pay more of their own medical bills. J. Scott Applewhite/AP hide caption

itoggle caption J. Scott Applewhite/AP

President Obama in Denver on Wednesday. Jewel Samad /AFP/Getty Images hide caption

itoggle caption Jewel Samad /AFP/Getty Images

Scooter Store ads are ubiquitous. PR Newswire hide caption

itoggle caption PR Newswire

If you're covered by Medicare and win or settle a personal injury case, the battle for compensation isn't over. iStockphoto.com hide caption

itoggle caption iStockphoto.com

A compromise bill that passed the Congress at the last minute included provisions that will reverberate through the nation's health care system. Saul Loeb/AFP/Getty Images hide caption

itoggle caption Saul Loeb/AFP/Getty Images

Rep. Pete Stark, a California Democrat, was defeated in November. Stark leaves a long-lasting mark on the nation's health care system. Jeff Chiu/AP hide caption

itoggle caption Jeff Chiu/AP

In a push to improve quality, Medicare will pay some hospitals more and others, including Boston's Massachusetts General, less. Steven Senne/AP hide caption

itoggle caption Steven Senne/AP