John J. (Jack) Lynch III served as President and CEO of Main Line Health from 2005-2025, providing executive leadership to suburban Philadelphia’s most comprehensive healthcare system comprised of four of the region’s respected acute care hospitals.

During his tenure with Main Line Health, Lynch and his leadership team were credited with enhancing the technology necessary to support significant advances in strengthening the organization’s commitment to safety, quality and equity. He fostered a period of expansion, including the addition of an acute care hospital and six health centers to better serve the needs of the Main Line and western suburban communities. Additionally, he cultivated an employee work environment that garnered recognition from several independent rating organizations. Under Lynch’s leadership, Main Line Health was the recipient of The American Hospital Association’s Quest for Quality Award in 2023 and the Carolyn Boone Lewis Equity of Care Award in 2024.

Prior to joining Main Line Health, Lynch served nearly 20 years as an executive with the St. Luke's Episcopal Health System in Houston, Texas, where he advanced to the position of executive vice president and chief operating officer for the system, as well as CEO of the system’s flagship facility, St. Luke's Episcopal Hospital.

A native of Washington, D.C., Lynch received his undergraduate degree from the University of Scranton in Pennsylvania and his Master of Health Administration degree from the Washington University School of Medicine in St. Louis, Missouri.

As former Governor of the American College of Healthcare Executives, Lynch also served on the boards of the United Way of Greater Philadelphia and Southern New Jersey, The Haverford School, the Malcolm Baldrige National Quality Award Board of Overseers, The American Heart Association and The American Hospital Association.