Christine Candio has been named president and CEO of St. Luke's Hospital in Chesterfield, Mo. She will replace Gary Olson, who is retiring after 36 years at St. Luke's. Her appointment is effective in January. For the past six years, Candio has been CEO of Inova Alexandria Hospital, a not-for-profit hospital in Alexandria, Va., and senior VP of Inova Health System. She started her healthcare career as a nurse and has worked in leadership and senior executive positions for the past 30 years.