(Reuters) -Investigators from the U.S. Department of Justice are questioning former employees of UnitedHealth Group as part of a probe into the company's Medicare payment practices, the Wall Street ...

Justice Department prosecutors recently interviewed former employees about company practices that boost federal payments.

UnitedHealth is the country’s largest health insurer and has 90,000 doctors under its control, more than any other company. ... DOJ seeks interviews with former UnitedHealth Group doctors.

AARP faces questions in its role promoting UnitedHealth’s Medicare Advantage ... As UnitedHealth Group faces a criminal investigation by the U.S. Department of Justice alleging potential ...