Quest Diagnostics Employee Directory

Quest Diagnostics Global Highlights

Location

Employees

North America

31K

• United States Of America
  31K
• Mexico
  153
• Canada
  38
• Dominican Republic
  2
• Jamaica
  2
• Antigua And Barbuda
  1
• Haiti
  1
• Honduras
  1
• Panama
  1
• El Salvador
  1

Asia

1.6K

• India
  1.5K
• Philippines
  45
• Viet Nam
  13
• China
  9
• United Arab Emirates
  8
• Indonesia
  7
• Singapore
  6
• Japan
  5
• Malaysia
  5
• Pakistan
  5
• Turkey
  4
• Afghanistan
  3
• Bangladesh
  3
• Russian Federation
  2
• Qatar
  2
• Saudi Arabia
  2
• Sri Lanka
  1
• Kuwait
  1
• Nepal
  1
• Iran
  1
• Cambodia
  1

Europe

260

• United Kingdom Of Great Britain And Northern Ireland
  177
• Germany
  17
• Ireland
  15
• Finland
  9
• France
  6
• Spain
  6
• Italy
  5
• Poland
  5
• Netherlands
  3
• Hungary
  3
• Moldova
  2
• Ukraine
  2
• Lithuania
  1
• Portugal
  1
• Denmark
  1
• Belarus
  1
• Belgium
  1
• Bulgaria
  1
• Sweden
  1
• Greece
  1
• Armenia
  1
• Albania
  1

Africa

62

• Kenya
  23
• Egypt
  8
• Uganda
  6
• South Africa
  5
• Nigeria
  4
• Morocco
  3
• Ethiopia
  2
• Zimbabwe
  2
• Ghana
  2
• Zambia
  2
• Niger
  1
• Algeria
  1
• Tanzania
  1
• Cameroon
  1
• Senegal
  1

South America

36

• Brazil
  16
• Colombia
  10
• Ecuador
  4
• Argentina
  3
• Chile
  2
• Peru
  1

Oceania

10

• Australia
  8
• New Zealand
  2

North America accounts for 94% of Quest Diagnostics's workforce, followed by Asia (5%).

Quest Diagnostics's Leadership

• 
  P. Z.

  Chief Executive Officer

  Mobile Phone

  Email
• 
  A. S.

  Chief Executive Officer

  Mobile Phone

  Email
• 
  A. W.

  Ceo, Founder - Ctp Solutions, Llc

  Mobile Phone

  Email
• 
  D. N.

  Chief Executive Officer

  Mobile Phone

  Email
• 
  F. D.

  Chief Executive Officer

  Mobile Phone

  Email
• 
  G. V.

  Chief Executive Officer

  Mobile Phone

  Email
• 
  B. W.

  Chief Buisness Development Officer

  Mobile Phone

  Email
• 
  D. S.

  Chief Operating Officer

  Mobile Phone

  Email

Quest Diagnostics Employee Metrics

• Information Technology
• Research
• Sales
• Engineering
• Analytics
• Other
• Administrative
• Community & Social Services
• Supply Chain
• Program & Project Management

Sales is the largest department at 15% of profiles with a known department, up from 10% in July 2025, followed by Community & Social Services (12%, up from 0%) and Administrative (8%, up from 1%).

Contact profiles from Quest Diagnostics

• 
  S. R.

  President - South East Region

  Mobile Phone

  Email

  Sep 20, 2026
• 
  J. S.

  Commercial Director (cco) Mexico & Central America

  Mobile Phone

  Email

  Mexico, Mexico City

  Aug 31, 2026
• 
  S. K.

  Owner

  Mobile Phone

  Email

  India, Chandigarh

  Oct 14, 2026
• 
  D. G.

  Directeur General

  Mobile Phone

  Email

  France, Île-de-France

  Sep 17, 2026
• 
  L. H.

  Managing Director, N. Asia Global Marketing

  Mobile Phone

  Email

  China, Shanghai

  Aug 09, 2025
• 
  P. Z.

  Chief Executive Officer

  Mobile Phone

  Email

  Jul 09, 2026
• 
  A. S.

  Franchise Owner

  Mobile Phone

  Email

  India, Andhra Pradesh

  Sep 01, 2026
• 
  J. G.

  Managing Director

  Mobile Phone

  Email

  Hong Kong, Hong Kong

  Apr 29, 2026
• 
  A. S.

  Chief Executive Officer

  Mobile Phone

  Email

  Oct 17, 2024
• 
  A. V.

  Owner

  Mobile Phone

  Email

  Oct 17, 2024

• 1
• 2
• 3
• …
• Next >

Frequently Asked Questions

What are the largest departments at Quest Diagnostics?

Sales is the largest department at 15% of profiles with a known department, up from 10% in July 2025, followed by Community & Social Services (12%, up from 0%) and Administrative (8%, up from 1%). Quest Diagnostics's workforce spans 40 departments.

Where are Quest Diagnostics's employees located?

Quest Diagnostics has about 33K employees across 2 continents, most of them in North America. North America accounts for 94% of Quest Diagnostics's workforce, followed by Asia (5%). By country, the largest groups are United States Of America (93%) and India (5%).

How has Quest Diagnostics's workforce changed over the past year?

Quest Diagnostics's workforce fell 7% between July 2025 and July 2026. Sales's share of profiles with a known department rose from 10% to 15%.

How many employees does Quest Diagnostics have currently?

Quest Diagnostics has approximately 33K employees as of October 2026. These team members are located across 6 continents, including North America, Asia and Europe.

Who are Quest Diagnostics's key employees and leadership?

As of October 2026, Quest Diagnostics's key employees include:

• Chief Executive Officer: P. Z.
• Chief Executive Officer: A. S.
• Ceo, Founder - Ctp Solutions, Llc: A. W.
• Chief Executive Officer: D. N.
• Chief Executive Officer: F. D.

Looking for contact data? Unlock accurate emails and phone numbers for your ideal prospects with LeadIQ.

What is Quest Diagnostics's most common email format?

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

What is Quest Diagnostics known for?

Quest Diagnostics was founded in 1967 and operates in the Medical and Diagnostic Laboratories industry. You can contact Quest Diagnostics's main corporate office by phone at

+1-973-520-****

. Explore Quest Diagnostics's company overview page for more information.