Quest Diagnostics

Quest Diagnostics Employee Directory

Medical and Diagnostic LaboratoriesUnited States10001+ Employees

Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes.  Derived from the world's largest database of clinical lab results, our diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve health care management.  Quest annually serves one in three adult Americans and half the physicians and hospitals in the United States, and our 47,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives.

The company offers physicians the broadest test menu (3,000+ tests), is a pioneer in developing innovative new tests, is the leader in cancer diagnostics, provides anatomic pathology (AP) services, & interpretive consultation through its medical & scientific staff of about 900 M.D.s & Ph.D.s. The company reported 2020 revenues of $9.44 billion. 

Quest Diagnostics offers the most extensive clinical testing network in the U.S., with laboratories in most major metropolitan areas, & in Mexico, the UK & India. The company also operates four esoteric laboratories, 40 outpatient AP laboratories, & 160 smaller, rapid-response laboratories. 

Patients may have specimens collected in any of the company’s approximately 2,250 patient service centers. On a typical workday, testing is performed for about 550,000 patients. 

Quest Diagnostics empowers healthcare organizations & clinicians with state-of-the-art connectivity solutions. 

The company is the leading provider of pre-employment drugs-of-abuse screening for employers & risk assessment services for the life insurance industry. It is the world’s 2nd largest provider of clinical trials testing for new pharmaceuticals.

More information is available at www.questdiagnostics.com.

Language Assistance / Non-Discrimination Notice
Asistencia de Idiomas / Aviso de no Discriminación
語言協助 / 不歧視通知
www.QuestDiagnostics.com/home/nondiscrimination

Find Quest Diagnostics employees' phone numbers or email addresses

Quest Diagnostics Global Highlights

Location
Employees

North America
24K

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  • United States Of America
    24K
  • Mexico
    120
  • Canada
    31
  • Antigua And Barbuda
    2
  • El Salvador
    1
  • Jamaica
    1
  • Panama
    1
  • Dominican Republic
    1

Asia
632

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  • India
    520
  • Philippines
    46
  • Pakistan
    10
  • China
    9
  • Japan
    7
  • Singapore
    6
  • Viet Nam
    6
  • Nepal
    4
  • United Arab Emirates
    3
  • Malaysia
    3
  • Indonesia
    3
  • Iraq
    2
  • Turkey
    2
  • Russian Federation
    2
  • Bangladesh
    1
  • Cambodia
    1
  • Afghanistan
    1
  • Saudi Arabia
    1
  • Qatar
    1
  • Sri Lanka
    1
  • Kazakhstan
    1
  • Uzbekistan
    1
  • Israel
    1

Europe
252

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  • United Kingdom Of Great Britain And Northern Ireland
    176
  • Ireland
    13
  • Germany
    13
  • Finland
    12
  • France
    5
  • Spain
    4
  • Italy
    4
  • Bulgaria
    4
  • Poland
    4
  • Netherlands
    4
  • Hungary
    3
  • Greece
    3
  • Belgium
    1
  • Portugal
    1
  • Austria
    1
  • Moldova
    1
  • Slovenia
    1
  • Sweden
    1
  • Ukraine
    1

South America
65

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  • Brazil
    26
  • Colombia
    24
  • Ecuador
    6
  • Argentina
    4
  • Chile
    4
  • Peru
    1

Africa
46

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  • Kenya
    13
  • South Africa
    12
  • Egypt
    6
  • Ghana
    3
  • Morocco
    2
  • Ethiopia
    2
  • Nigeria
    2
  • Niger
    1
  • Zambia
    1
  • Senegal
    1
  • Zimbabwe
    1
  • Tunisia
    1
  • Cameroon
    1

Oceania
14

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  • Australia
    11
  • New Zealand
    2
  • Fiji
    1

Quest Diagnostics's Leadership

  • Stylized image of a person
    J. D.
    Chief Executive Officer And President
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    P. Z.
    Chief Executive Officer
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    A. S.
    Chief Executive Officer
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  • Stylized image of a person
    A. B.
    Chief Quality & Regulatory Affairs Officer
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  • Stylized image of a person
    M. D.
    Chief Commercial Officer
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    T. P.
    Vice President & Chief Procurement Officer
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    S. S.
    Executive Vice President And Chief Financial Officer
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  • Stylized image of a person
    V. B.
    President, Great Midwest Region
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Quest Diagnostics Employee Metrics

100%
50%
0%
2025
2024
  • Information Technology
  • Research
  • Sales
  • Engineering
  • Analytics
  • Other

Contact profiles from Quest Diagnostics

Name
Title
Contact Info
Location
Last Update
  • Stylized image of a person
    D. W.
    Neurology Account Executive - President's Club 2022 & 2020
    Phone icon
    United StatesFlorida
    Oct 23, 2025
  • Stylized image of a person
    M. V.
    Neurology Account Executive | 2x President’s Club Winner
    Phone icon
    United StatesDistrict of Columbia
    Oct 27, 2025
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    R. M.
    Senior Talent Aquisition Partner
    Phone icon
    United StatesNew York
    Oct 22, 2025
  • Stylized image of a person
    S. K.
    Owner
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    IndiaChandigarh
    Oct 20, 2025
  • Stylized image of a person
    W. C.
    Sr. Employee Relations Partner
    Phone icon
    United StatesNew Jersey
    Oct 22, 2025
  • Stylized image of a person
    L. P.
    Employee Relations Partner, Er Coe Of Hr Shared Services (remote)
    Phone icon
    United StatesMassachusetts
    Jun 03, 2025
  • Stylized image of a person
    A. D.
    Ceo
    Phone icon
    United StatesConnecticut
    Jul 19, 2025
  • Stylized image of a person
    J. S.
    President, Licensed Psychologist
    Phone icon
    United StatesNew York
    Sep 08, 2025
  • Stylized image of a person
    M. D.
    Chief Commercial Officer
    Phone icon
    United StatesMassachusetts
    Oct 30, 2025
  • Stylized image of a person
    C. R.
    Sr. Employee Relations Partner
    Phone icon
    United StatesFlorida
    Oct 18, 2025

Frequently Asked Questions

What is Quest Diagnostics known for?

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Quest Diagnostics was founded in 1967 operates in the Medical and Diagnostic Laboratories industry. The company's main headquarters is located in 500 Plaza Drive, Secaucus, NJ 07094, US; you can contact the main corporate office by phone at . Explore Quest Diagnostics's company overview page for more information.

What is Quest Diagnostics's most common email format?

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Quest Diagnostics employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Quest Diagnostics email formats with LeadIQ.

How many employees does Quest Diagnostics have currently?

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Quest Diagnostics has approximately 30K employees as of October 2025. These team members are located across 6 continents, including North AmericaAsiaEurope.

Who are Quest Diagnostics's key employees and leadership?

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As of October 2025, Quest Diagnostics's key employees include:

  • Chief Executive Officer And President: J. D.
  • Chief Executive Officer: P. Z.
  • Chief Executive Officer: A. S.
  • Chief Quality & Regulatory Affairs Officer: A. B.
  • Chief Commercial Officer: M. D.

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