Number of providers by state who wrote at least 3,000 prescriptions for Schedule 2 controlled substances in 2012 in Medicare Part D. ProPublica/NPR hide caption

itoggle caption ProPublica/NPR

Dr. Oliver Korshin says he's just a few years from retirement and can't afford the flurry of technology upgrades the federal government expects him to make. Annie Feidt/Alaska Public Media hide caption

itoggle caption Annie Feidt/Alaska Public Media

An official at the University of Michigan Health System in Ann Arbor says its mix of patients helps explain the infection rates. Scott C. Soderberg/Courtesy of University of Michigan Health System hide caption

itoggle caption Scott C. Soderberg/Courtesy of University of Michigan Health System