Witty, who largely led the U.S. healthcare giant from the U.K., made big bets on Medicare enrollees that backfired.

UnitedHealth Group Chief Executive Officer Andrew Witty stepped down, effective immediately, "for personal reasons", the company said Tuesday. “Leading the people of UnitedHealth Group has been ...

Andrew Witty’s departure ... leadership and compassion as chief executive and as a director and wish him and his family the best." UnitedHealth Chief Executive Officer Stephen Hemsley takes ...

File - Andrew Witty, Chief Executive Officer of UnitedHealth Group, testifies at a Senate Finance Committee hearing examining cyber attacks on health care, and the Change Healthcare cyber attack.

UnitedHealth Group Chairman Stephen Hemsley is returning to helm the health care conglomerate once again. He will replace Andrew Witty effective immediately.

top executives of UnitedHealth Group gathered in a conference center on the company’s suburban Minneapolis campus. Chief Executive Officer Andrew Witty stood up in the front and offered an ...

Andrew Witty ... of UnitedHealth Group, especially during some of the most challenging times any company has ever faced,” Hemsley said in a news release. “The Board and I have greatly valued his ...