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

U.S. Senator Chuck Grassley requested detailed information on UnitedHealth's Medicare billing practices, in a letter to CEO ...

The Justice Department is probing diagnoses and practices that triggered extra payments to UnitedHealth’s Medicare Advantage ...

UnitedHealth Group (UNH) is under fire over its Medicare billing practices. The Wall Street Journal reported Friday that the ...

The Department of Justice has reportedly launched an investigation into UnitedHealth Group's Medicare billing practices, ...

The health insurance giant has called a new report from WSJ “misinformation,” but investors may not be so sure. Shares were ...

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

U.S. Sen. Charles Grassley says health plans ‘continue to defraud’ taxpayers in letter asking questions of Eden Prairie-based health care giant.

The probe is analyzing the company’s practice of frequently logging diagnoses that trigger larger payments to its Medicare ...

UnitedHealth Group called The Wall Street Journal's report "misinformation" and said it was unaware of reported investigaiton ...

UnitedHealth Group Inc. (NYSE: UNH) shares are trading lower Tuesday after the Wall Street Journal reported that Senator ...

The selloff came as more than $2.7 trillion worth of options expired, an event which typically spurs heightened volatility.