1860 – Lankenau Medical Center is founded as the German Hospital of Philadelphia to provide a place where German-speaking patients can be treated by doctors who speak their language.
1893 – Dr. George Gerhard and a group of volunteers develop Bryn Mawr Hospital for the burgeoning community of people moving away from the city.
1902 – Bryn Mawr Rehabilitation Hospital is built on the current site as the Rush Hospital for Contagious Diseases’ country division, its primary goal being to treat patients with tuberculosis.
1913 – Paoli Hospital is founded as the Homeopathic Hospital of Chester County .
1963 – Riddle Hospital opens its doors, thanks to a $2.5 million gift and 72-acre land grant left by the estate of Samuel D. Riddle.
1985 – Main Line Health is established as a not-for-profit charitable organization to better address the needs of the communities served by Lankenau Medical Center, Bryn Mawr Hospital and Bryn Mawr Rehab Hospital.
1986 – Paoli Hospital joins the Main Line Health family.
1993 – The Home Care Network (known originally as Community Health Affiliates) joins Main Line Health.
1996 – Main Line Health reorganizes to enhance community input and consolidate medical staff. In conjunction with Thomas Jefferson University Hospital, Main Line Health creates the Jefferson Health System (absorbing the Frankford Health Care System and Magee Rehabilitation Hospital)—today the largest and strongest healthcare system in the region.
2007 – Riddle Hospital becomes the fifth hospital of the Main Line Health system.
2008 – ModernHealthcare.com ranks Main Line Health 11th out of 238 participating organizations as one of the best places to work in healthcare. Philadelphia magazine names 28 Main Line Health physicians to its “Top Doctors” list for 2008. Hospitals & Health Networks magazine places Main Line Health in the nation’s 100 “most wired” hospitals and healthcare systems.