Below are steps to contact Quest Diagnostics customer service and get a live person on the phone:
- Dial 1-866-697-8378
- Say “speak with an agent”
- Say “other” or press 3
- Say “it something else” or press 5
- Enter or Say your local main office phone number
- Stay on the line
- The automated phone system will connect you to a live customer service agent from Quest Diagnostics
Quest Diagnostics Voice Main Menu
- Press 1 if you are a patient.
- Press 2 if you know your party’s extension.
- Press 3 for your direct deposit.
Quest Diagnostics Customer Service Representatives Hours
Live Quest Diagnostics customer service is available from 8am to 5pm EST Monday-Friday, Saturday-Sunday closed.
Quest Diagnostics Support Phone Numbers
- Quest Diagnostics Support Phone Number: 1-866-697-8378. Live Quest Diagnostics customer service is available from 8am to 5pm EST Monday-Friday, Saturday-Sunday closed.
- Quest Diagnostics Employer Solutions: 1-800-877-7484.
- Nichols Institute, San Juan Capistrano: 1-800-553-5445.
- Nichols Institute, Chantilly: 1-800-336-3718.
- Nichols Institute, Valencia: 1-800-421-4449.
- Quest Diagnostics Genomic Services: 1-866-436-3463.
- AmeriPath: 1-800-890-6220.
- Dermpath Diagnostics: 1-800-890-6220.
- Cleveland HeartLab: 1-866-358-9828.
- Diagnostic Laboratory of Oklahoma (DLO): 1-800-891-2917.
- ExamOne: 1-877-933-9261.
Quest Diagnostics Web Links
- Quest Diagnostics Web Site
- Quest Diagnostics Facebook page
- Quest Diagnostics Twitter page
- Quest Diagnostics Instagram page
- Quest Diagnostics Youtube page
- Quest Diagnostics Linkedin page
- Quest Diagnostics page with all social media
Quest Diagnostics Mailing Addresses
Quest Diagnostics Clinical Laboratories, Inc.:
500 Plaza Drive
Secaucus, NJ 07094
Quest Diagnostics Infectious Diseases, Inc.:
33608 Ortega Highway
San Juan Capistrano, California 92675
Quest Diagnostics Ventures LLC:
500 Plaza Drive
Secaucus, New Jersey 07094
Quest Diagnostics Live Chat Support
Below are steps to contact Quest Diagnostics customer service by chat:
- Go to the Quest Diagnostics Support page.
- To press the “Chat” icon in the bottom right corner.
- Start chat. Chat is available from 8am to 5pm EST Monday-Friday, Saturday-Sunday closed.
Quest Diagnostics support e-mail
Below are steps to contact Quest Diagnostics customer service by email:
- Billing
- Go to the Billing Services Contact page.
- Fill in the form.
- Press the “Submit” button.
- Locations/Appointments
- Go to the Appointment Scheduling Comments Contact page.
- Fill in the form.
- Press the “Submit” button.
- Patient Inquiry
- Go to the Patient Inquiry Contact page.
- Fill in the form.
- Press the “Submit” button.
Quest Diagnostics Help Center
You can find more information at Quest Diagnostics Support page.
How do I speak to a live person if Quest Diagnostics contact number is not working?
It is possible that contact number may become disconnected or overloaded when number of calls is just too high. During such events we recommend to use other shortcuts to get help quickly:
- Connect to a live chat on a Quest Diagnostics website.
- Open Quest Diagnostics Facebook, Twitter, Instagram or any other supported social network and send a direct message there.
- If e-mail address is available send an e-mail. It is possible that e-mail may be answered quicker than getting through a phone support and you will have something in written to which you can refer later in your communication.