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    Quest Diagnostics

    2.8 (28 reviews)
    Open 7:00 am - 4:00 pm

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    They do not welcome walk ins, make an appointment
    Bianca R.

    Very unprofessional staff, slammed the door in my face after I waited 30 mins on standby, they don't take walk ins after 3pm apparently. They should really post this somewhere so people do not wait to be seen. There was a 10 min window where there were no appointments or no one else waiting in the waiting room and they still didn't see me. I need the blood test for medication and I told them and they said to make an appointment and walked away. There is absolutely no customer service here and nobody to talk to.

    Heather C.

    Easy check in, friendly staff. Highly recommend you make an appointment for quick service. I was in and out in 5 minutes. Btw-they are located inside the main 770 Mason St building on the first floor. You'll see their door right inside.

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    9 months ago

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    2 years ago

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    1 year ago

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    4 years ago

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    2 years ago

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    2 years ago

    No the person at the desk is very rude. Most the phlebotomist are rude but there are some sweet ones there.

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    3 years ago

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    2 years ago

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    2 years ago

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    6 years ago

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    Thank you for sharing this feedback, Heather!

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    3 years ago

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    3 years ago

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    2 years ago

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    5 years ago

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    2 years ago

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    4 years ago

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    3 years ago

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    5 years ago

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    3 years ago

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    5 years ago

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    3 years ago

    I always make appointments for blood draw. The technicians are very professional and helpful. No complaints.

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    6 years ago

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    6 years ago

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    Thank you for sharing this feedback, Sandra!

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    7 years ago

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    4 years ago

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    7 years ago

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    4 years ago

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    7 years ago

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    Vacaville Walk-In Care

    (34 reviews)

    Since my daughter's primary care physician did not have any availability when needed, my husband…read moreand I scheduled an appointment for her at this Walk-in Care Clinic, since they unfortunately do not have one in Fairfield. Upon arrival, we were greeted and checked-in by the staff at the front desk, who seemed friendly enough. Since we arrived quite early, we had a little wait before being called back to be seen. We are pleased by the overall quality of care that our daughter received here. The medical assistant and nurse practitioner who saw our little one were friendly and excellent with our daughter. The nurse practitioner was knowledgable on the various illnesses currently going around and prescribed the appropriate medication for her. Overall, we are thankful that there are walk-in care options when primary care physicians do not have any availability for that given week. However, walk in care unfortunately does not see all types of patient complaints. If you have a sick child, this is definitely a viable option though.

    I wouldn't recommend coming here with a pretoddler. The staff were all very friendly from frontdesk…read moreto nursing. I brought my 2 year old here and I could tell that the provider doesn't typically see little ones from the way they did their exam. I guess ultimately I got what I wanted and the wait wasn't long due to only a few people waiting. I'm just saddened by how poor our medical system is from my regular clinic not having access to take us and how urgent centers typically use midlevels to provide care. I think Northbay urgent care might be better but more busy.

    Quest Diagnostics - laboratorytesting - Updated May 2026

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