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Urgent Care

URGENT CARE APPOINTMENT


Get InQuicker by making your same-day appointment now at one of our Urgent Cares.

San Antonio Urgent Care Ontario
970 N. Mountain Avenue, Ontario, CA 91762
909.579.6680

Eastvale San Antonio Medical Plaza
12442 Limonite Ave. Eastvale, CA 91752
951.393.3010

Sierra San Antonio Medical Plaza
16465 Sierra Lakes Pkwy, Fontana, CA 92336
909.434.1150

Rancho San Antonio Medical Plaza
7777 Milliken Avenue, Rancho Cucamonga, CA, 91730
909.948.8000

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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. 

From simple sprains to colds and the flu, we're here for you when you need us most. You can make an online appointment for quick and convenient medical care including pediatric urgent care. Alternatively you can walk-in and wait for the next available opening.

San Antonio Urgent Care Ontario

Ontario Urgent Care

Conveniently located at 970 N. Mountain Avenue in Ontario just south of the I-10 freeway.

Address
970 N. Mountain Avenue
Ontario, CA 91762
909.579.6680
 
Hours
Monday - Friday
9 am - 8 pm
Weekends & Holidays
9 am - 5 pm
Walk-ins Welcome 

 

Eastvale Urgent Care

Eastvale Urgent Care

Conveniently located on Limonite Avenue, Eastvale San Antonio Medical Plaza is across the street from the Eastvale Gateway, just off the 15 FWY.

Address
12442 Limonite Avenue
Eastvale, CA 91752
951.393.3010
 
Hours
Monday - Friday
9 am - 8 pm
Weekends & Holidays
9 am - 5 pm
Walk-ins Welcome 

 

Rancho Urgent Care

Rancho Urgent Care

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.

Address
7777 Milliken Avenue
Rancho Cucamonga, CA, 91730
909.948.8000
 
Hours
Monday - Friday
9 am - 8 pm
Weekends & Holidays
9 am - 5 pm
Walk-ins Welcome 

 

Sierra Urgent Care

Sierra Urgent Care in Fontana

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.

Address
16465 Sierra Lakes Parkway
Fontana, CA 92336
909.434.1150
 
Hours
Monday - Friday
9 am - 8 pm
Weekends & Holidays
9 am - 5 pm
Walk-ins Welcome 

 


*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