Quest Diagnostics

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950 Las Gallinas Ave
San Rafael, CA 94903
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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3.024 reviews
Carol G.
8/1/2025

I tried the Quest in Terra Linda, San Rafael. Rosier was exceptionally nice and kind. My negatives are with the company. There are no available phone service for issues and schedulling is not...

Kathleen M.
8/8/2024

I go to quest but in Marin it takes a week compared to two days at the most in Silicon Valley to get an appointment. Also the phlebotomist's are so over worked and not paid for it that they tend...

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Jena M.
7/10/2024

They are literally the worst. Appointments are never available unless you book months in advance I tried twice for a walk -in and the first time they got so backed up that ai waited until the...

Arthur R.
3/27/2024

Simple blood draws. Computer system is possible. Person in Greenbrae was rude and confrontational!

Shawn A.
9/30/2022

One cannot even ever talk to a person when you call the local number. I had some questions - but no - no questions allowed. The online appointment process is a nightmare. One can only check one...

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