Some of the sickest Medicare Advantage patients ran into problems getting end-of-life care. Ultimately many patients switched to traditional Medicare, costing taxpayers billions, according to an investigation by the Wall Street Journal. This is one of many Medicare Advantage practices that is now under government scrutiny. Both Congress and Medicare agency head Dr. Mehmet Oz are pushing for reforms to curb tactics that can boost federal payments to private insurers. The Department of Justice is also investigating major private insurance companies UnitedHealth, Aetna, Elevance Health and Humana. Jessica Mendoza discusses the investigations with WSJ’s Anna Wilde Mathews. Further Listening: -Medicare, Inc. Part 1: How Insurers Make Billions From Medicare -A Life-or-Death Insurance Denial Sign up for WSJ’s free What’s News newsletter. Learn more about your ad choices. Visit megaphone.fm/adchoices