David Wichmann became chief executive officer, UnitedHealth Group, on September 1, 2017. He is responsible for the strategic direction and overall performance of the enterprise and its long-term growth agenda. He is also a member of the board of directors. Previously, Wichmann served as president, UnitedHealth Group, beginning in November 2014, with oversight responsibility for all of UnitedHealthcare’s domestic and international businesses, and for overall UnitedHealth Group performance. Wichmann also served as chief financial officer of the enterprise from 2011 until mid-2016. He previously held positions as president, UnitedHealthcare; president and chief executive officer, Specialized Care Services (now OptumHealth); and senior vice president, Corporate Development. Prior to joining UnitedHealth Group in 1998, Wichmann was a partner with Arthur Andersen.