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

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

UnitedHealth shares turned lower in midday trading following reports of another probe into the nation's biggest health ...

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

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.