100 Most Influential People in Healthcare
Vice chairman, UnitedHealth Group; founder and managing partner, Optum Ventures
Under Renfro's stewardship as CEO for nearly seven years, Optum has been out in front of the vertical integration game. The UnitedHealth Group unit has continued to grow its health services presence by acquiring urgent-care centers and physician practices. Earlier this year, Renfro shifted roles to lead the organization's venture capital arm, Optum Ventures.