At San Antonio Regional Hospital, we're dedicated to providing the best urgent care facilities and walk-in clinics in Ontario, Eastvale, Fontana, and Rancho Cucamonga - with the experts and technology to treat life's unexpected interruptions.
Conveniently located at 970 N. Mountain Avenue in Ontario just south of the I-10 freeway.
Conveniently located on Limonite Avenue, Eastvale San Antonio Medical Plaza is across the street from the Eastvale Gateway, just off the 15 FWY.
Conveniently located on Milliken Avenue, between E. Foothill Boulevard and Church Street, Rancho San Antonio Medical Plaza provides urgent care and walk-in clinic needs.
Conveniently located on Sierra Lakes Parkway in Fontana just north of the 210 FWY, Sierra San Antonio Medical Plaza provides urgent care and walk-in clinic needs.
*WHILE WE MAKE EVERY EFFORT TO ACCOMMODATE OUR PATIENTS AT THEIR RESERVED TIME, APPOINTMENTS MAY BE DELAYED DUE TO MEDICAL EMERGENCIES AND ARE SUBJECT TO THE AVAILABILITY OF EXAM ROOMS
Gift Giving
909.985.2811
Find a Physician
About Us
Careers
Pay Your Bill
Help Paying Your Bill
Price Transparency