UnitedHealth Group has changed up its executive leadership with current President David Wichmann set to take over as CEO Sept. 1 as current CEO Stephen Hemsley steps into the newly created position of executive chair of the carrier’s board of directors. Current board chair Richard Burke will become the lead independent director. The company announced the changes Wednesday (Aug. 16). Hemsley was one of the few insurance executives to back the GOP Congress’ health overhaul attempts. He continues to lobby...