Quest Diagnostics logo

Quest Diagnostics

DGX | NYSE
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$234.02
-$10.86 (-4.43%)
Sep 22, 2026, 12:26 PM ET · Market open

Company Profile

Quest Diagnostics Incorporated, founded in 1967 and headquartered in Secaucus, New Jersey, is a premier provider of diagnostic testing, information, and related services, serving clients both domestically and internationally. Its core business involves the development and provision of diverse diagnostic information services, such as routine, advanced clinical, and anatomic pathology testing. While primarily operating under the Quest Diagnostics brand, it also leverages specialized identities like AmeriPath, Dermpath Diagnostics, ExamOne, and Quanum to reach a broad spectrum of clients. Its extensive client base includes patients, clinicians, hospitals, integrated delivery networks, health plans, employers, and other direct healthcare entities. Delivery of these services is facilitated through a robust network comprising laboratories, patient service centers, in-office phlebotomists, call centers, and mobile health professionals including paramedics and nurses. Additionally, the company provides risk assessment services for the life insurance industry and offers comprehensive information technology solutions to healthcare organizations and clinicians.

Key Executives

Name Position
James E. Davis Chairman, Chief Executive Officer & President
Sam A. Samad Executive Vice President & Chief Financial Officer
Catherine T. Doherty Executive Vice President of Regional Businesses
Damini Chokshi Vice President of Investor Relations
Dan Haemmerle Interim VP of Investor Relations & VP Finance
Garry Clark Senior Vice President and Chief Marketing & Communications Officer
Karthik Kuppusamy Senior Vice President of Clinical Solutions
Kristin Lee Wallace Senior Vice President & Chief Compliance Officer
Michael E. Prevoznik Senior Vice President & General Counsel
Michael J. Deppe Senior Vice President, Corporate Controller & Chief Accounting Officer
Murali Balakumar Senior Vice President and Chief Information & Digital Officer

Latest SEC Filings

Date Type Title
Sep 03, 2026 4 Filing
Aug 31, 2026 4 Filing
Aug 14, 2026 SC 13G/A [Amend] Statement of acquisition of beneficial own...
Jul 29, 2026 4 Filing
Jul 27, 2026 4 Filing
Jul 27, 2026 4 Filing
Jul 27, 2026 4 Filing
Jul 27, 2026 4 Filing
Jul 27, 2026 4 Filing
Jul 27, 2026 4 Filing
View All SEC Filings
Quest Diagnostics
Quest Diagnostics logo
Country United States
IPO Date Dec 16, 1996
Industry Medical - Diagnostics & Research
Sector Healthcare
Employees 51,500
CEO James E. Davis

Contact Details

500 Plaza Drive Secaucus, New Jersey 07094 United States

Stock Details

Ticker Symbol DGX
Exchange NYSE
Fiscal Year January - December
Reporting Currency USD
CIK Code 0001022079
CUSIP Number 74834L100
ISIN Number US74834L1008
SIC Code 8071

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