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Quest Diagnostics

3.2
(195 reviews)

Business Details

640 S Washington St, Naperville, IL
60540, United States
(630) 778-9606

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
640 S Washington St, Naperville, IL
60540, United States

Hours

Monday5:30 AM - 3:30 PM
Tuesday5:30 AM - 3:30 PM
Wednesday5:30 AM - 3:30 PM
Thursday5:30 AM - 3:30 PM
Friday5:30 AM - 3:30 PM
Saturday6:00 AM - 1:00 PM
SundayClosed

Reviews

3.2
195 reviews
5 stars
96
4 stars
12
3 stars
3
2 stars
8
1 star
76
  • DS
    Denise Scollard
    Mar 30, 2026
    1.0
    Hoffman Estates has the most ignorant woman working there. I was in there as a walk-in at 4pm. I seen 3 patients get called in for appointments. When the "nurse" comes out to get the fourth patient, she asked me if I had an appointment. Told her I was a walk-in and she started to challenge me on that. Said that they close at 4:30 and they take their last appointment at 4:20, which it was almost 4:20. I told her that I have been waiting for the last almost 20 minutes and if you didn't take walk-ins after a certain time, why did the computer allow me to check in? she continued to tell me that they don't take walk-ins and I then asked her if they would be taking me and she repeated herself. I raised my voice and told her thank you for wasting my time! If this was the case, why don't they have someone working a window after certain times to let walk-ins know this and why didn't the other 3 employees that seen me say anything? I will NEVER show my face at that location ever again and if there was another place I could go, I would. For someone who is supposed to be in the medical field, her bedside manner lacks drastically.
  • PL
    Phil Lukan
    Mar 14, 2026
    5.0
    I showed up to my appointment without the blood work order due to a mixup with my physicians office. Stephanie was very understanding and worked with me to keep my appointment while I worked with my physicians office to fax over the order. She was very kind and professional and did a great job which is why I was very satisfied with my entire experience with Quest.
  • OD
    Olesen Farm Drive-In
    Mar 10, 2026
    5.0
    Jonathan is awesome. He is so fast, efficient, and confident. I normally dread blood draws because my veins are small and normally difficult- lots of pokes and pain. Jonathan has gotten it on the first try every time (2 for 2!). I like the reservation and check in system, too. Getting labs used to be miserable but now it’s not so bad. Thanks!
  • NK
    Nina koehler
    Mar 1, 2026
    5.0
    The check-in process is awesome. They have a digital machine that checks you in and easily scans your ID and insurance card. So efficient. We waited under 10 minutes. The person who did my blood draw was kind, quick, and respectful. I was in and out fast, and it didn’t hurt at all. Honestly, so much better than going to my doctor’s office for labs. Highly recommend.
  • KK
    Kavita Krishnan
    Feb 18, 2026
    2.0
    I visited Quest yesterday and the lab technician entered all codes mentioned on my lab order and said my order did not state it was an annual physical. I then went back to my doctor’s office and got the order updated with the code of Z00.01. I went in again this morning to give my blood with the updated order. The new technician did not even verify if all the codes on the doctor’s order are entered correctly even though I told him it was updated. I had to point out which code was added. He then added Z00.01. Nothing showed up on the Quest system for Z00.01! Z00.01 (general adult medical examination annual physical with abnormal findings) is a common code. Why isn’t it showing up?? I then asked the lab technician to leave it in even though it showed up with no description. The system is lagging with basic codes. The lab technician is not thorough with verifying what’s in the system vs on the order EVEN after saying it was updated. Disappointed!

Frequently Asked Questions About Quest Diagnostics

What do I need to know before I arrive at a Quest Patient Service Center?

Please be aware that when you visit a Quest Patient Service Center: • Scheduled appointments are strongly encouraged and will receive priority. Please arrive and check in 10 minutes before your appointment time. If you check in more than 10 minutes late for your appointment, you will be served as a walk-in. • If you walk in, you will have to wait for the next available opening.

Do you accept walk-ins?

Scheduled appointments are strongly encouraged and will receive priority. If you walk in, you will have to wait for the next available opening.

Brand Certified Facts from Quest Diagnostics

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