What are your business hours?

We are open from 9 AM to 6 PM, Monday through Saturday.

Do you offer appointments or walk-ins?

We accept both walk-ins and scheduled appointments.

Where are you located?

We are located at 16465 Sierra Lakes Pkwy.

Do you accept insurance?

Yes, we accept most major insurance plans. Please call us to confirm.

How long do I have to wait to be seen?

Our wait times are typically under 30 minutes, but may vary depending on the number of patients.

Reviews (909) 434-1150 Call Website Photos About

Sierra San Antonio Medical Plaza in Fontana

Is this your business?

2.8 (32)

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About

Sierra San Antonio Medical Plaza is a comprehensive Urgent Care Center located in Fontana, CA, providing top-notch medical services to individuals and families. Our team of experienced Family Practice Physicians offers personalized care for a wide range of medical needs. In addition to our urgent care services, we also feature an on-site Laboratory for convenient testing and diagnosis. Our state-of-the-art facility is equipped with advanced technology, ensuring accurate results and timely treatment. For patients requiring rehabilitation, our Physical Therapy Clinic provides expert care to help you recover from injuries or manage chronic conditions. Our licensed therapists work closely with your primary care physician to create a personalized treatment plan tailored to your unique needs. Our team also includes a skilled Radiologist who interprets imaging results with precision and accuracy, helping our physicians make informed decisions about your care. At Sierra San Antonio Medical Plaza, we are committed to delivering exceptional medical care in a compassionate and welcoming environment. Visit us today at 16465 Sierra Lakes Pkwy, Fontana, CA 92336, and experience the difference for yourself.

Sierra San Antonio Medical Plaza Review Summary

The summary was generated by AI, based on reviews.

This urgent care center has received overwhelmingly positive reviews from patients, praising the friendly and professional staff, short wait times, and efficient service. Patients appreciate the clean and modern facility, and many have reported successful treatments for various health issues.

Review Rating Chart

Google: 4.8/5

Healthgrades: 4.5/5

Yelp: 4.5/5

Zocdoc: 4.9/5

Vitals: 4.5/5

Initializing review summary...

Reviews & Ratings

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2.8

(32 Reviews)

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Sonja Dawkins -Google user

4 years ago

Yesterday, I escorted my beautiful mother to urgent care where she was taken care of by PA Brandy and nurses Deanna and Sonya. I was so impressed by their professionalism and genuine care they showed my mother. PA Brandy took time to listed to...Read More

Sheryl & Karl Farmer -Google user

3 years ago

If I could give .5 star I would. I’ve been in the holding tank for over ONE hour. Folks on personal calls it’s ridiculous!! I came to get a COVID TEST. I was feeling this bad when I arrived….

Oplee2k2 Lee -Google user

5 months ago

I been waiting to see doctor for 3 hours and I ask a nurse for how much longer I have to wait? And she responded that still 4 more pts ahead of me. (Her face tells me “shut up and just wait), Such a slow in...Read More

Kenneth Shepherd -Google user

a year ago

I’m visiting from Texas and apparently caught the flu. At least that’s what I was told, I waited for over an hour for the doctor to come in and tell me I have a viral infection and it’s nothing she can do. She...Read More

Jackie Monteon -Google user

2 months ago

I love it here! Always so quick to get you in and out. Everyone is always nice

Kay Hill -Google user

7 months ago

Took my daughter to visit. Checked in at 1:30, still waiting to be seen by dr. It’s going on 3 hours. Been to urgent care plenty of times, the waiting here is on another level

Katia Ramirez -Google user

a year ago

Im so disappointed in the last couple days. Had an appointment last night and it’s been 24 hours and I’m sitting at the pharmacy still waiting and trying g to get medication that the office did not send correctly to the pharmacy. I know they...Read More

Gazelle -Google user

a year ago

I had a very good experience here on 9/21/23. Nice, clean lobby/waiting area. Not too busy. Everyone from the front desk, the doctors assistant and most of all, the doctor were just great. Very professional and knowledgeable and very nice. I will definitely come...Read More

Nathan Evans -Google user

7 months ago

Waited over 2 hours for a X ray with only 1 person ahead. Urgent my butt. Whole team went to lunch while my daughter starved because the receptionists kept saying my child would be seen soon

Bibiana Jerez -Google user

5 months ago

Paper work in Spanish. Never ask for it. But they think we are in Mexico. To translate it took 1/2 hours. 🤢 …

oanh lam -Google user

a year ago

It was such a great experience taking my mom to San Antonio Urgent Care today. The wait time was short and the staffs were attentive. My mom was taken care by amazing PA Alfred Amgad, who really took his time to listen to our concerns...Read More

Alisyn Glass -Google user

a year ago

Signed in at 10:30am & DIDN'T get seen by anyone til 1:30pm and people walking in were getting seen before me. And didn't get results til 2:30pm. Could of been in & out within 2 hrs at the San Antonio Hospital in Upland

Carol Medina -Google user

3 months ago

The fronta ladies were so rude did not give good service. Would not go back.

Vanessa Ramirez -Google user

3 years ago

My mom had an appointment for her COVID booster. We had to wait in line with all the other patients that were walkings for regular urgent care. I asked a few times that we had an appointment and no update. We waited 1 hour just...Read More

Maria Hunt -Google user

3 years ago

Through CA vaccine site I registered for my COVID booster. My appointment was for 10:00am, I arrived at 9:50am. There was NO directions in the lobby to guide me where to go for my APPOINTMENT. Finally someone was able to point me in the right...Read More

Yvette Hernandez -Google user

7 years ago

Staff tries to be helpful ,but I honestly think they don't even know what they don't know. Doctors are horrible, don't listen ,are always in a rush with one foot out the door and are condescending . The communication in the office is really bad,no...Read More

Keshauna Neazer -Google user

5 years ago

I never waited at an urgent care for so long. I came to urgent care to avoid the long wait at the ER probably would have been done faster there. I was here for a whole hr after they closed and i only had...Read More

Kristen Dorn -Google user

a year ago

I have called multiple times for two weeks straight now and still no answer from the receptionist. They don’t return phone calls either. I am a dialysis patient and need to talk to someone in the office. I wouldn’t recommend this clinic if you want...Read More

Travis Murphy -Google user

6 years ago

Never really know what to expect at an urgent care, but this place was a relief. I made an appointment the night before and was in and out within a hour. Good communication and everyone was friendly.

Leo Castro -Google user

6 years ago

I've been here for several years and it has changed. so very slow. not sure why you have an appointment time for a hour later visit. never was like this before. I think it's time to find a different location or different insurance....Read More

Features

Service options

Has online care

Accessibility

Wheelchair accessible elevator

Wheelchair accessible entrance

Wheelchair accessible parking lot

Wheelchair accessible restroom

Amenities

Restroom

Planning

Accepts new patients

Appointments recommended

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