Anthony "Tony" Slonim is an American author, physician and healthcare executive who was the president and CEO of Renown Health until 2022. Before his 2014 appointment at Renown Health, he was executive vice president and chief medical officer for RWJBarnabas Health. He also held faculty appointments at the Jefferson College of Nursing and Health and the University of Medicine and Dentistry of New Jersey. Slonim is the first quadruple-board-certified doctor in the United States with certifications in adult critical care, internal medicine, pediatric critical care and pediatrics.