Mary Lou Mastro, 62, president and CEO of the Elmhurst Hospital, will take over as system CEO in July following a transition period as co-CEO beginning Jan. 1. Pamela Dunley, 60, who has served as chief nursing officer and COO at Elmhurst hospital for 10 years, will replace Mastro.
Joel Yuhas has been named president and CEO of UCHealth's Memorial Hospital Central and Memorial Hospital North in Colorado Springs, Colo., effective Jan. 9. He replaces George Hayes, who stepped down in early November.
Most recently, Yuhas, 46, was president and CEO of Dignity Health's St. Mary Medical Center in Long Beach, Calif. He has also served in leadership positions at Georgetown University Medical Center in Washington, Graduate Hospital in Philadelphia and UPMC in Pittsburgh.
Samuel Hazen has been named president of 170-hospital HCA Holdings. He retains the COO title, which he has held since January 2015.
HCA CEO R. Milton Johnson was the last person to hold the title of president at the system, but the role has been unfilled since he became chairman and CEO in 2014.
Hazen, 56, has spent 33 years with HCA and is a key architect of a market hub strategy that has positioned the Nashville-based system as the nation's healthiest investor-owned hospital chain.