CEDAR RAPIDS — The departure of Ted Townsend, outgoing head of a Cedar Rapids hospital, marks the end of nearly two decades of leadership within the health care industry in Eastern Iowa.Townsend will step down from his role as president and chief executive officer of UnityPoint Health-Cedar Rapids at the end of the year after 16 years as the head of the organization and 39 years in the health care industry — an opportunity for which he said he is grateful.Townsend’s retirement is effective Dec.