Vince Caponi will step down as CEO of the St. Vincent Health hospital system July 1 to become senior vice president of St. Louis-based Ascension Health Alliance, the parent organization of St. Vincent. He will also be executive chairman of the board for St. Vincent Health. During a search for Caponi’s permanent replacement, Ian Worden will serve as interim CEO. Worden since 2008 has been chief operating officer of the 22-hospital system, the second-largest in Indiana. Worden previously served as St. Vincent’s chief financial officer for eight years.