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Contact Customer Service

Email or call us with questions or comments based on your area of interest below. 

Quest Diagnostics

 

 Email us:

Billing

Locations / Appointments

Patient Service Centers

 Call us:

 

Patients: Call 866-MYQUEST (866-697-8378) and select Option 2

Quest Diagnostics Clinical Trials

1(800) 877-7004

 
 
Quest Diagnostics Employer Solutions
1(800) 877-7484
 

 

Quest Diagnostics Nichols Institute

 

Nichols Institute, San Juan Capistrano

1(800) 553-5445

Nichols Institute, Chantilly:

1(800) 336-3718

Nichols Institute, Valencia:

1(800) 421-4449

 

 

AmeriPath

1(800) 330-6565

 

 

Dermpath Diagnostics

1(800) 330-6565

 

 

Diagnostic Laboratory of Oklahoma (DLO)

1 (800) 891-2917

 

 

ExamOne

1 (800) 677-6726

 

 

Focus Diagnostics

1(800) 445-4032