What departments does Quest Diagnostics have?

Quest Diagnostics has employees across 2 departments including Marketing, Operations.

What is the largest department at Quest Diagnostics?

The largest department at Quest Diagnostics is Marketing with 1 employees.

Where are Quest Diagnostics employees located globally?

Quest Diagnostics has employees across 7 continents and 78 countries including Kenya, South Africa, Uganda, Niger, Algeria.

How has Quest Diagnostics's team size changed over time?

Quest Diagnostics's team has decreased from approximately 32K to 18K employees based on available data.

Quest Diagnostics Employee Directory

Medical and Diagnostic LaboratoriesNew Jersey, United States10001+ Employees

Quest Diagnostics is a medical and diagnostic laboratory company based in Secaucus, New Jersey. It offers a broad menu of more than 3,000 tests and provides cancer diagnostics, anatomic pathology services, and interpretive consultation through a medical and scientific staff of about 900 MDs and PhDs. It serves about one in three adult Americans and roughly half of the physicians and hospitals in the United States. Its network includes laboratories in most major metropolitan areas and facilities in Mexico, the United Kingdom, and India, and it operates about 2,250 patient service centers. On a typical workday it processes testing for about 550,000 patients, and in 2026 it announced investments to enhance digital ordering and electronic health record connectivity.

Quest Diagnostics Global Highlights

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

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

100%

50%

0%

2026

2025

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

Contact profiles from Quest Diagnostics

Name

Title

Contact

Location

Last Update

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

Frequently Asked Questions

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.

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.

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.

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Quest Diagnostics Employee Directory

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