More than half of Americans enrolled in Medicare receive their coverage from a private insurer through a program called Medicare Advantage. But according to whistleblowers, some of those companies may be overcharging the government and getting billions of taxpayer dollars in the process. Several Justice Department investigations have followed those claims. On today’s Big Take podcast, we hear from one of those whistleblowers and Bloomberg health-care reporter John Tozzi about how Medicare Advantage took off and the questions these fraud allegations raise about how taxpayer dollars are spent. Read more:  Major Insurers Are Scamming Billions from Medicare, Whistle-Blowers Say Medicare Advantage Fraud Case Settled for Up to $100 Million UnitedHealth Falls on DOJ Probe Into Medicare Billing See omnystudio.com/listener for privacy information.