Quest Diagnostics Phone Numbers and Emails

Toll-Free Number:

  • (800) 877-7484
    Employer Solutions

Customer Service:

  • (800) 890-6220
    AmeriPath and Dermpath Diagnostics
  • (866) 358-9828
    Cleveland HeartLab
  • (800) 891-2917
    Diagnostic Laboratory of Oklahoma (DLO)
  • (800) 677-6726
  • (800) 553-5445
    Nichols Institute
  • (800) 336-3718
    Nichols Institute, Chantilly
  • (800) 421-4449
    Nichols Institute, Valencia
  • (800) 631-1390
  • +55 112 985 3341
    Diagnostic Testing And Services Brazil
  • +52 800 527 7534
    Diagnostic Testing And Services Mexico
  • +52 554 160 7777
    Diagnostic Testing And Services Mexico City
  • +52 555 089 1221
    Direct Consumers, Patients, and Physicians Mexico
  • +52 555 089 1203
    Regional Director, Mexico
  • +44 208 377 3400
    United Kingdom
  • +1 787 725 8243
    Worldwide Representative


  • (800) 222-0446

Investors/ Franchasing:

  • (973) 520-2900
    Investor Relations


  • (800) 222-0446 ext 8954
    Privacy Inquiries

Sales/ Reservations:

  • (866) 697-8378
    Questions about my order or Make an order

Quest Diagnostics Emails:

Investors/ Franchising
Patient Advocacy, Privacy Inquiries
More phone numbers and emails Less phone numbers and emails

Quest Diagnostics Contact Information

Quest Diagnostics Website:

Quest Diagnostics Help Center:

Corporate Office Address:

Quest Diagnostics Incorporated
500 Plaza Drive
Secaucus, New Jersey 07094
United States
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Customer Service Rating and Reviews

1.3 / 5
0 customer service

I was giving drug test in quest diagnostics at 22 Mill st Arlington Ma. The associate says go drink water and came back then ready. Then I went back after 1 hour the nurse ( I dont know her name ...

Beth L Kev
Poor Test Results Turn Around Time and Customer Service!!

On May 4, 2022, a blood specimen was drawn at my internist's office (Medical Specialists of Dallas) and sent out to Quest for a COVID antibody test. The information on your website states that th...

Summary of Quest Diagnostics Customer Service Calls

03:20 AVG CALL

Top Reasons of Customers Calls

Consumers Call the Most From

Why Do People Call Quest Diagnostics Customer Service?

Payments and Charges Question:

  • “Can’t pay my bill online”
  • “Billing”
  • “Make a payment”

Request for Information Question:

  • “Confirmation of appointment tomorrow”
  • “My appt confirmation today 8:00”
  • “About a bill”

Product/ Service Question:

  • “Everyone that works at everyone of your quest locations are very rude they will not help you they have no supervision at all this outfit stinks the whole thing stinks you can never get ahold of anybody when you need help making an appointment if your”
  • “Insurance”
  • “Blood work”

Account Question:

  • “I am locked out of my account”
  • “Can't log in”
  • “Locked out of account”

Staff Question:

  • “Poor service”
  • “To make an appointment plus the automatic service can't spell my name”
  • “Inquiring services for a business”

Shipping and Delivery Question:

  • “Get the Uric acid test done”
  • “Where is my appt at”
  • “Did not receive my blood work”

Employment Question:

  • “My pay check was short . Need payroll”
  • “Need All paycheck stubs”
  • “Employer note”

Activation/ Cancellation Question:

  • “I need to cancel my appointment”
  • “Cancel appointment”
  • “U cancelled my appt”

Website/ Application Question:

  • “Website”
  • “Incorrect web listing and they closed two minutes before the website”
  • “App issues”

Return/ Replace Question:

  • “Need to do return to duty urine”
  • “Change appointment date”
  • “Change address”

Refund Question:

  • “I am do a refund and am getting a runaround”
  • “To get a refund from paying for own bloodwirk”

Cards Question:

  • “Wrong card on file”
  • “Did not give back inside. Card”

Other Question:

  • “Find an appointment”
  • “They are stealing money from me”
  • “Results”


Top Quest Diagnostics Services

Customer Care, Blood Test Procedure, Receptionist

Quest Diagnostics Pros and Cons

Pros: No one to help you over phone, Close to my house, Lab draw tech was skilled, Availability, I always liked the people

Cons: Customer service, Do not seem to care about customers, Lab service, Disrespected by employee, Difficult to communicate with

Related Companies

Quanum Enterprise Content Solutions, AmeriPath, Athena Diagnostics, Care360, Dermpath Diagnostics


Quest Diagnostics is a health center providing its patients with diagnostic consultative services. The company offers diagnostic testing services, clinical testing trial. Quest Diagnostics makes innovative molecular and gene-based testing. Quest Diagnostics works with companies to provide) employees with health insurances. Blueprint for wellness is a program for testing employees’ health condition. Biometric screening and other services are included. Clients can get lab test results on smartphones using MyQuest app. There are more than 2,200 diagnostic centers throughout the US. Also, the company owns clinical laboratories in England, Mexico, India. In 2013 Quest Diagnostics was named number 1 company in Healthcare industry in "Pharmacy and Other services" category according to FORTUNE magazine.

Quest Diagnostics reviews and complaints

Quest Diagnostics is ranked 297 out of 2173 in Hospitals, Clinics and Medical Centers category

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