Quest Diagnostics

Reviews

• MC

  Mercedes Cordova

  2 days ago
  5.0
  🚨🚨🚨This is a one-person site, so expect some delays. Pang and Robert did a great job taking care of patients. My appointment was at 8:10, and I was seen around 8:20—which makes sense given that only one person is managing everything. If you have an appointment, you will be helped, but it’s not realistic to expect to be seen earlier than your scheduled time. They’re doing the best they can with limited staffing. Giving 5 stars because they’re truly great at what they do, and honestly, it’s much better having them here than not at all!
• CC

  CC

  Feb 16, 2026
  4.0
  Peng runs the entire lab herself checking patients in, performing blood draws, handling insurance, and managing the workflow all alone. She is professional and efficient. Very grateful for her dedication and hard work. Almost all of the quest diagnostics throughout the Bay Area are severely short staffed, crowded, and need to hire more phlebotomists. It’s completely unfair to patients and your staff to put so much work and stress on one lab technician for an entire lab especially in a busy city like Lafayette.
• BV

  Bekki Van Voorhis-Gilbert

  Nov 20, 2025
  1.0
  Peng the phlebotomist, the ONLY person who works in this location is very efficient and personable. However, this Mt Diablo lab is woefully understaffed and has been for years. Even having a second person just during morning hours would be a huge improvement. If you don't have an appointment, be prepared for a very long wait. Again Peng is wonderful, but there's simply too much for one person to do.
• LB

  Lucy Burgoyne

  Nov 17, 2025
  2.0
  Peng was fantastic! Very efficient and kind. That said I’m only rating two stars because the location needs to be better staffed. Appointments are typically only available weeks in advance. When I urgently needed bloodwork done last minute, I went as a walk-in, and it took about an hour and a half to get drawn despite getting to the office exactly at opening 7:30AM. There isn’t anyone at the front desk to help with paperwork and insurance. Peng did it all.
• JL

  Joyce L

  Aug 19, 2024
  5.0
  Willie gives great shot. No pain!! Prompt and courteous. Was out in 15 minutes. Please buy decent bandages. Only complaint. Ty.😎👵🏻