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

toggle caption Tracy Weber/ProPublica

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

toggle caption Jonathan Alcorn/ProPublica

With help from the Affordable Care Act, government fraud investigators will make more use of computer programs to detect Medicare and Medicaid scams. iStockphoto.com hide caption

toggle caption iStockphoto.com

GlaxoSmithKline's mishandling of information on safety problems with diabetes drug Avandia is just one of the violations cited in a settlement with the government. Joe Raedle/Getty Images hide caption

toggle caption Joe Raedle/Getty Images