"Mount Sinai has always been a trailblazer in research, education, and patient care, including the development of even better models of care to benefit patients. This is an exciting moment at Mount Sinai, as the institution is expanding its reach to better serve individuals and families living not only in the five boroughs, but also in Westchester and Long Island."

Arthur Klein, MD
President of The Mount Sinai Health Network

Dr. Klein, a pediatric cardiologist, came to Mount Sinai after serving at North Shore-LIJ Health System as Western Regional Executive Director since 2011 with oversight of all health system facilities in western Queens, Manhattan and Staten Island. He was involved in administrative oversight of Lenox Hill Hospital, the Manhattan Eye Ear and Throat Institute, Staten Island University's North and South sites, and the Center for Comprehensive Care in lower Manhattan. While at North Shore-LIJ, he focused on physician partnerships and opportunities for growth and investment.  

From 2009-2011, Dr. Klein was Executive Director of North Shore-LIJ's Steven and Alexander Cohen Children's Medical Center (CCMC) of New York, where he was responsible for the quality and growth of pediatric medicine across the entire North Shore-LIJ Health System. He joined North Shore-LIJ in 2009 as Senior Vice President of Children's Services.
Prior to his tenure at North Shore-LIJ, Dr. Klein was SVP and Chief Physician Officer at Lifespan Corporation in Providence, RI, where he was also Associate Dean for Strategy and Special Projects at the Warren Alpert Medical School of Brown University. Prior to that, he served as Executive Vice President and Chief Operating Officer at The New York Presbyterian Healthcare System, and as Executive Vice Chairman of the Department of Pediatrics at The New York Hospital-Cornell Medical Center, where he completed his residency and fellowship.

Dr. Klein is a fellow of the American Academy of Pediatrics and the American College of Cardiology, and has written extensively on pediatric cardiology. He also serves, or has served, on several committees and Boards, including The Board of The Sackler School of Medicine/Tel Aviv University, The Committee for Hispanic Children and Families, Inc., and as the Chair of the Committee on Health Professions of the American Hospital Association. A native of New York City, he received his medical degree from the State University of New York Downstate Medical Center, and a bachelor's degree from the Massachusetts Institute of Technology.