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.
Our urgent care hours are below.
16465 Sierra Lakes Pkwy, Fontana, CA 92336
Get InQuicker by making your same-day appointment now at our Fontana location
Sierra San Antonio Medical Plaza
16465 Sierra Lakes Pkwy
Fontana, CA 92336
Diagnostic Services and Treatment
999 San Bernardino Rd.
Upland, CA 91786
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Our mission is to improve the overall health of our regional community by offering healthcare services that both comfort and cure, in settings that inspire confidence, and in a manner that earns the trust of our patients, our physicians, and our employees.