The Iowa Republican’s letter to the company cites findings from a series of Wall Street Journal articles.

Sen. Chuck Grassley (R-Iowa) has given UnitedHealth Group two weeks to explain its method for documenting Medicare Advantage ...

U.S. Senator Chuck Grassley had demanded detailed information on UnitedHealth's Medicare billing practices, according to a ...

Sen. Chuck Grassley, chairman of the Senate Judiciary Committee, sent UnitedHealth Group CEO Andrew Witty a letter demanding detailed information on the company’s Medicare billing practices Monday.