Contact Us

Need Assistance? Please choose from the topics below.

Contact Billing Customer Service

Call one of our Patient Billing Customer Service Centers based on your area of interest below:

LOCATION CITY TELEPHONE NUMBER
CANADA   1 (866)930-3718 (calls from Canada only)
CA Sacramento 1 (855)324-2016
CA West Hills 1 (800)758-6047
CO Denver 1 (800)433-4988
CT Wallingford 1 (800)933-2009
FL Miami 1 (800)743-7440
FL Tampa 1 (800)488-8890
GA Atlanta 1 (800)366-6635
IL Wood Dale 1 (800)888-8333
KS Lenexa 1 (800)759-2789
LA New Orleans 1 (800)759-2758
MA Cambridge 1 (800)253-2743
MD Baltimore 1 (844)750-4024
MI Auburn Hills 1 (800)888-8333
MN Minneapolis 1 (800)888-8333
NJ Teterboro 1 (800)631-1388
NV Las Vegas 1 (855)619-4056
OH Cincinnati 1 (800)888-8333
PA Philadelphia 1 (800)766-2604
PA Pittsburgh 1 (800)837-3177
TN Nashville 1 (800)766-0595
TX Dallas 1 (800)694-0247
TX Houston 1 (866)846-4021
WA Seattle 1 (866)846-4027

 

Quest Diagnostics Employer Customer Service
Please call our Employer Customer Service number at 1(800) 877-7484.

Quest Diagnostics Nichols Institute
Please call our Nichols Institute, San Juan Capistrano at 1(800) 426-4702, or Nichols Institute, Valencia at 1(800) 421-7110 (options 2#, 7, 2) or Nichols Institute, Chantilly at 1(800) 336-3718 (option 4).

Quest Diagnostics Clinical Trials
Please call our Clinical Trials Customer Service number at 1(800) 877-7004.