Arthur A. Gianelli

Chief Transformation Officer, Mount SInai Health & President, Morningside Hospital at The Mount Sinai Hospital

President, Mount Sinai Morningside

Chief Transformation Officer, Mount Sinai Health System

Arthur Gianelli is the Chief Transformation Officer for the Mount Sinai Health System and President of Mount Sinai Morningside Hospital. He has worked for the Mount Sinai Health System since February 2014.

As Chief Transformation Officer, Mr. Gianelli partners with leaders across the Mount Sinai Health System to transform organizational culture, implement best practices, and instill key behaviors to drive improvements in patient experience. Efforts to transform organizational culture include launching a series of learning academies and spreading the utilization of lean process improvement methodologies across the Mount Sinai Health System.

During his tenure as President of Mount Sinai Morningside, Mr. Gianelli lead the hospital’s response to the COVID-19 pandemic; introduced a lean daily management system that has driven significant improvements in patient experience, quality, and safety measures; shepherded a transformative capital improvement plan; and worked with School of Medicine leadership to grow a number of clinical programs. Under Mr. Gianelli’s leadership, Mount Sinai Morningside achieved HIMSS 7 status; was recognized as 26th among the World’s Smartest Hospitals by Newsweek Magazine; and saw its Cardiology and Adult Cardiac Surgery programs ranked 49th in the United States by U.S. News and World Report.

From 2006 through 2014, Mr. Gianelli served as President and Chief Executive Officer of NuHealth, a public benefit corporation that runs the Nassau University Medical Center, a nursing home, and co-operates with the Long Island FQHC, Inc. Under Mr. Gianelli's leadership, NuHealth earned accolades for stabilizing its finances, improving the quality of care and patient outcomes, and modernizing and expanding its services and facilities.

Prior to joining NuHealth, Mr. Gianelli held senior executive positions over a 10-year period for two local governments on Long Island. He was Deputy County Executive for Budget and Finance for Nassau County and Director of Operations for the Town of North Hempstead. He was responsible for shepherding major fiscal turnarounds in both municipalities.

Mr. Gianelli currently serves on the Board of Directors of the Greater New York Hospital Association, Health Leads, HealthIx, and the Mount Sinai Health Partners IPA. He has previously served on the Executive Committees of Healthfirst and America’s Essential Hospitals, and he was a member of Regional Policy Board 2 of the American Hospital Association. He has earned numerous professional, civic, and teaching awards, including the Healthcare Leaders of New York’s Award of Distinction, which is given in recognition of sustained and outstanding contributions to the advancement of healthcare administration as a profession.

Mr. Gianelli earned a Bachelor’s Degree in History from St. John's University, a Master of Arts Degree in Political Science from Brown University, a Master's in Business Administration Degree from Dowling College, and a Master's in Public Health Degree from Columbia University. He is a Fellow of the American College of Healthcare Executives. Mr. Gianelli teaches “Issues in Hospital Management” as well as “Managed Care and Healthcare Reform” to graduate students at the Mailman School of Public Health at Columbia University and the Icahn School of Medicine at Mount Sinai.



  • Chief Transformation Officer, Mount SInai Health & President, Morningside Hospital

    Current role

View in org chart