San Antonio Regional Hospital is a medical facility founded in 1907 that provides healthcare services to communities in the Inland Empire region of California, including Upland, Eastvale, Fontana, Ontario, and Rancho Cucamonga. The hospital operates a 24-hour Emergency Department and several specialized centers for cardiac care, stroke treatment, cancer, orthopedics, and maternity services. Its Heart Center and Stroke Center are recognized as High Performing Hospitals in their respective areas.
The hospital's services extend to a Center of Aging, a new initiative for Medicare-age patients. Its stated mission is to improve the health and well-being of the people it serves, with a focus on community health and a commitment to treating patients like family.






