Sierra San Antonio Medical Plaza

Fontana Urgent Care. Walk-in Clinic.


Please note: due to COVID-19, the operating hours of this urgent care facility may fluctuate. 


Conveniently located on Sierra Lakes Parkway in Fontana just north of the 210 FWY, the Sierra San Antonio Medical Plaza provides urgent care and walk-in clinic needs.

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.


Urgent Care in Fontana at Sierra San Antonio Medical Plaza 

16465 Sierra Lakes Pkwy, Fontana, CA 92336

909.434.1100


Services Offered:

Urgent Care

909.434.1150


Monday - Friday

9 am - 8:00 pm

Weekends & Holidays

9 am - 5 pm

Walk-ins Welcome 

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URGENT CARE APPOINTMENT


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

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

No upcoming InQuicker times available

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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