Quest Diagnostics

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17051 Sierra Lakes Pkwy Ste 205
Fontana, CA 92336
The Quest Diagnostics difference. Bringing together quality, speed, and technology to power advanced, affordable diagnostics for all. No trade-offs required.
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Reviews

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2.095 reviews
Ashley T.
9/20/2025

I highly recommend booking an appointment because the room fills up fast with walk-ins. I had an appointment at 7:20 am and I was out within ten minutes.

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Natalie C.
8/30/2025

This location is extremely disappointing. I understand prioritizing patients with appointments, but making walk-ins wait until the end of the day is unacceptable. A well-run facility should be...

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Fok U.
8/14/2025

Staff needs training in customer service and efficiency!!!! No value and no goal for patient satisfactory. Scheduled appointment is useless you wait for hours. Staff takes their time and just chit...

Lil Gina L.
7/17/2025

frustrated. Came to get blood drawing at 7 am when the doors opened. There was only 4 people appt and 2 walk in I'm the 2 walk in. Now this place is packed. No sitting room 10 walk ins and none...

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Sophia K.
3/27/2024

I really liked it here. I wanted to dislike it because of the low rating but it's hard to dislike. I walked in on a Monday afternoon as a walk-in and had to wait about 45 minutes. They have a...

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