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Quest Diagnostics

3.8
(150 reviews)

Business Details

22312 El Paseo, Rancho Santa Margarita, CA
92688, United States
(949) 236-0269

About

Family Medicine
The Quest Diagnostics difference. Bringing together quality, speed, and technology to power advanced, affordable diagnostics for all. No trade-offs required.

Location

Quest Diagnostics
22312 El Paseo, Rancho Santa Margarita, CA
92688, United States

Hours

Monday6:00 AM - 3:30 PM
Tuesday6:00 AM - 3:30 PM
Wednesday6:00 AM - 3:30 PM
Thursday6:00 AM - 3:30 PM
Friday6:00 AM - 3:30 PM
SaturdayClosed
SundayClosed

Reviews

3.8
150 reviews
5 stars
101
4 stars
2
3 stars
4
2 stars
2
1 star
41
  • SG
    Spir Ghali
    Mar 27, 2026
    1.0
    My 1st experiance was very good but the last 2 experiances was too bad because in February, I was forced to cancel my Doctor's appoitment! Because I received my results after 3 weeks and after many messages. In March, our apointments, for my wife and me were in 03/24 at 9:30, she received her results the day after but In didn't receive them till today even I sent 1 eamil and 1 message about this subject but no abswer!!?? Another problem, we moved and I changed accordignly the address in mw wife's account but I can't change it in my account, I sent 3 emails about this subject but also no answer till now.
  • JP
    James Peterson
    Mar 27, 2026
    1.0
    the first walkin day was 4 1//2 hours and I left. No words from anyone that worked there. the second day was great. Your website needs help !!!!! I cant get on with my computer or phone.
  • ES
    Elaine Sartini
    Mar 5, 2026
    5.0
    Excellent I will not go anywhere else the best place for having my blood work done
  • KR
    Kelly Rippin
    Feb 18, 2026
    5.0
    RSM Quest Diagnostics is the best place to go for your lab test. Gentle and quick!!! No bruise on my drawing arm!!! Thank you❤️
  • MA
    Maryam Akhlaghi
    Feb 4, 2026
    1.0
    I had a very disappointing experience at this lab. They seem to have no respect for walk-in patients. After waiting for an hour and a half, I politely asked about the delay, but the staff responded in a very rude and unprofessional manner, telling me I just had to sit and wait and that they couldn’t guarantee when I would be seen.

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