• Quest Diagnostics
  •  Overview
  • Last Modified:
  • August 20, 2025
  • Company type:
  • Public
  • Industry:
  • Healthcare
  • Verified:
  • No
  • No of Employees:
  • 10 001 - 50 000
  • Stock Code:
  • DGX
  • Download
  • Signed Health Status Declaration Form
  • Turnover $50m + ?:
  • Yes
  • Headquarters:
  • Secaucus, New Jersey, United States
  • Public Interest Score:
  • 750+

 

  • Quest Diagnostics
  • General Information

Description

Quest Diagnostics Inc (Quest Diagnostics) is a provider of diagnostic information services to patients and physicians through a network of laboratories and company-owned patient service centers. It offers a range of services including clinical testing with gene-based and other esoteric tests, anatomic pathology services, clinical trial testing, life insurer services and various healthcare information technology and diagnostic products. Quest Diagnostics provides its services to managed care organizations and other health insurance providers, clinicians, hospitals, retail healthcare providers, laboratories, and governmental agencies, among others. The company, along with its subsidiaries and branches, operates in North America, Asia Pacific, South America, and Europe. Quest Diagnostics is headquartered in Secaucus, New Jersey, the US.

James Davis:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Luis Diaz:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Tracey Doi:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Vicky Gregg:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Wright Lassiter:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Timothy Main:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Denise Morrison:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Gary Pfeiffer:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Timothy Ring:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No
Robert Carter:
qone: No, qtwo: No, qthree: No, qfour: No, qfive: No, qsix: No

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5 Benchmark > 4 Excellent > 3  Good > 2 Caution > 1 Risk

 

  • Company Information
  • Company System Number:
  • 15489
  • Founded Year: 
  • 1967
  • Registration Number: 
  • 16-1387862
  • Country: 
  • United States of America
  • Stock Exchanges: 
    • New York Stock Exchange
  • Financial year end: 
  • December
  • No. of Countries operations: 
  • 130
  • Company Status: 
  • In Business
  • Industry Sub Category: 
  • Date listed on Stock Exchange: 
  • 17/12/1996

 

  • Contact Information
  • Business operation: 
  • Quest Diagnostics Inc, is the world's leading provider of diagnostic information services. It provides information and insights based on an industry-leading menu of routine, non-routine and advanced clinical testing and anatomic pathology testing, and other diagnostic information services. It has strong testing capabilities, including services for the predisposition, diagnosis, treatment and monitoring of cancers and other diseases, and offer advanced tests in many fields, including endocrinology, immunology, neurology and oncology. Increasingly, it focuses on providing solutions and insights to its customers, based on the testing that it performs, the data that it gathers and its extensive medical, information and connectivity assets. In offering services, solutions and insights based on a full range of tests, information assets and other capabilities strengthens its market offering, market position and reputation.
  • Primary office: 
  • Quest Diagnostics, 500 Plaza Drive, Secaucus, NJ 07094

 

  • Additional Information
  • Listed?: 
  • Yes
  • Company secretary: 
  • Haley Sanchez
  • Reporting currency: 
  • USD
  • ISIN number (12 digit): 
NYSE
US74834L1008
  • Authorised shares:
  • Issued shares:
  • 110 707 293
  • No of shareholders:
  • 1001 and more shareholders
  • No of shareholders holding 20%:
  • 0 shareholders
  • Number of shares traded
  • Per Year:
  • Per Quarter:
  • Per Month:

 

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Shareholders holding 5% +


For a comprehensive list, please contact InsidEntity.

Material Subsidiaries/Associates


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Credit Rating

NameLogoCountryHeadquartersRating
S and GlobalCredit LogoUnited States of AmericaNew YorkAA-

 

Countries Operations/ Offices


 

Company Directors

Name
Nationality
Age
Role
Qualification
Name

James

Executive
NationalityAmerican
RoleCEO
QualificationBEng aeronautical, M.A.Sc
Date Appointed: 01/04/2013
Duration:
12 years and 7 months
Independance: N
Profile
Name

Luis

Executive
NationalityAmerican
RoleED
QualificationMD
Date Appointed:
Duration:
Date not available.
Independance: Date not available.
Profile
Name

Tracey

Non Executive
NationalityAmerican
RoleNED
QualificationBA, Business Economics
Date Appointed:
Duration:
Date not available.
Independance: Date not available.
Profile
Name

Vicky

Non Executive
NationalityAmerican
RoleNED
QualificationNot Available
Date Appointed:
Duration:
Date not available.
Independance: Date not available.
Profile
Name

Wright

Non Executive
NationalityAmerican
RoleNED
QualificationMHA (Health & Administration), BS Chemistry
Date Appointed:
Duration:
Date not available.
Independance: Date not available.
Profile
Name

Timothy

Non Executive
NationalityAmerican
RoleNED
QualificationNot Available
Date Appointed: 01/01/2014
Duration:
11 years and 10 months
Independance: N
Profile
Name

Denise

Non Executive
NationalityAmerican
71
RoleNED
QualificationB.S
Date Appointed: 01/02/2019
Duration:
6 years and 9 months
Independance: Y
Profile
Name

Gary

Non Executive
NationalityAmerican
RoleNED
QualificationBA, MBA Finance
Date Appointed: 01/12/2004
Duration:
20 years and 11 months
Independance: N
Profile
Name

Timothy

Non Executive
NationalityAmerican
0
RoleNED
QualificationNot Available
Date Appointed:
Duration:
Date not available.
Independance: Date not available.
Profile
Name

Robert

Non Executive
NationalityAmerican
RoleNED
QualificationB.Comp, M.Comp
Date Appointed: 01/05/2024
Duration:
1 year and 6 months
Independance: Y
Profile

 

Directors Tenure

Name
Duration
Name

James Davis

Duration12 years and 7 months
Profile
Name

Luis Diaz

DurationDuration not available.
Profile
Name

Tracey Doi

DurationDuration not available.
Profile
Name

Vicky Gregg

DurationDuration not available.
Profile
Name

Wright Lassiter

DurationDuration not available.
Profile
Name

Timothy Main

Duration11 years and 10 months
Profile
Name

Denise Morrison

Duration6 years and 9 months
Profile
Name

Gary Pfeiffer

Duration20 years and 11 months
Profile
Name

Timothy Ring

DurationDuration not available.
Profile
Name

Robert Carter

Duration1 year and 6 months
Profile

 

Director Experience

Name
Experience
Name

James

Experience Professional Firm, Healthcare
Profile
Name

Luis

Experience Healthcare, Technology, Other
Profile
Name

Tracey

Experience Business Services, Banking, Professional Firm
Profile
Name

Vicky

Experience Healthcare
Profile
Name

Wright

Experience Healthcare, Banking, Financial Services
Profile
Name

Timothy

Experience Technology, Stock Exchange, Business Services
Profile
Name

Denise

Experience Other
Profile
Name

Gary

Experience Professional Firm, Financial Services, Business Services
Profile
Name

Timothy

Experience Healthcare, Business Services, Other
Profile
Name

Robert

Experience Software and IT
Profile

 

Company Auditors

Name
Date Appointed
Years
Name

PwC

Date Appointed01/01/1995
Year30 years and 10 months
Profile

 

Company Past Directors

Name
ED/NED
Role
Name

Gail

ED/NEDNon Executive
RoleNED
Date Appointed: 01/01/1997
Date Resigned: 01/09/2023
Profile

 

Company Committees

Name

James Davis

Mainboard, Audit, Remuneration BD, EX
Profile
Name

Luis Diaz

Mainboard, Audit, Remuneration BD, OT
Profile
Name

Tracey Doi

Mainboard, Audit, Remuneration BD, AU, OT
Profile
Name

Vicky Gregg

Mainboard, Audit, Remuneration BD, NG, OT
Profile
Name

Wright Lassiter

Mainboard, Audit, Remuneration BD, AU, OT
Profile
Name

Timothy Main

Mainboard, Audit, Remuneration BD, AU, NG, OT
Profile
Name

Denise Morrison

Mainboard, Audit, Remuneration BD, NG, OT
Profile
Name

Gary Pfeiffer

Mainboard, Audit, Remuneration BD, AU, NG, EX, OT
Profile
Name

Timothy Ring

Mainboard, Audit, Remuneration BD, NG, TE
Profile
Name

Robert Carter

Mainboard, Audit, Remuneration BD, AU, OT
Profile

 

Committee
Abbreviation
Supervisory Board
SB
Board
BD
Risk & Compliance
RC
Audit
AU
Remuneration
RE
Capital investment
CI
Industry Specific
IS
Nominations & Governance
NG
Health, Safety & Environment
HS
Social & Ethics
SE
Technology
TE
Executive
EX
Other
OT