Main Line Health (MLH) is a non-profit health system serving portions of Philadelphia and its western suburbs. The mission of Main Line Health is to provide a comprehensive range of safe, high-quality health services, complemented by related education and research activities that meet the healthcare needs and improve the quality of life in the communities we serve.
Founded in 1985, MLH includes Bryn Mawr Hospital, Lankenau Medical Center, Paoli Hospital, Riddle Hospital, Bryn Mawr Rehabilitation Hospital; The Home Care Network; Lankenau Institute for Medical Research; Main Line HealthCare (physician network); Main Line Health Centers; Main Line Health Laboratories; Mid County Senior Services; and Mirmont Treatment Center. Main Line Health is part of Jefferson Health System (JHS), founded in 1996, whose members also include Thomas Jefferson University Hospitals and Magee Rehab.

