Fact Sheet

Company Overview

Quest Diagnostics 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 50,000 employees understand that, in the right hands and with the right context, our diagnostic insights can inspire actions that transform lives.

At a Glance
  • Quest Diagnostics is the world’s leading provider of diagnostic information services
  • Generated 2022 revenues of approximately $9.88 billion
  • Publicly trades common stock on the New York Stock Exchange (NYSE: DGX). More in Investor Relations
  • Ranks as a component of the S&P 500
  • Touches the lives of one-third of American adults each year
  • Serves approximately half of the physicians and hospitals in the U.S
  • Access to approximately 90% of U.S. insured lives
  • Engages workforce of about 50,000 employees dedicated to putting patients first every day
  • More than 7,300 patient access points, the most extensive network in the U.S.,
    including phlebotomists in physician offices and more than 2,100 of our own
    patient service centers 
    A medical and scientific staff of more than 600 M.D.s and Ph.Ds
    Logistics capabilities, that include approximately 4,000 courier vehicles and 20 aircraft that collectively make tens of thousands of stops daily
  • Offers physicians a test menu that is industry leading in breadth and innovation.  Our test menu ranges from routine biological tests to complex and specialized molecular and gene-based testing as well as anatomic pathology 
  • Provides a broad range of solutions for employers, including workplace drug testing for employers and government agencies; the Blueprint for Wellness employee wellness service; and risk assessment services for the life insurance industry
  • Publishes original research in peer reviewed publications, at medical and scientific conferences, and as a public service. Quest Diagnostics Health Trends reports examine trends in diseases based on the company’s United States database. Quest Diagnostics Drug Testing Index (DTI) reports examine trends in workplace drug testing, and have been considered a benchmark for U.S. workforce drug positivity trends since 1988 
  • Named as one of Fortune’s World’s Most Admired Companies in 2023 for the ninth consecutive year
  • Recognized by Fortune as one of America's Most Innovative Companies 2023
  • Named a Best Place to Work for LGBTQ Equality, based on the Human Rights Campaign Foundation Corporate Equality Index 2022
  • Consistently named one of the best places to work in U.S. business journal rankings, including Forbes® 2023 America's Best Large Employers 
  • Named one of America's Greatest Workspaces for Diversity in 2023 by Newsweek
  • Recognized by Newsweek as one of the Most Trustworthy Companies in America 2023.
  • Ranked on the Forbes® 2022 Global 2000
  • Named a member of the Dow Jones® Sustainability World and North America indexes since 2004 (DJSI World) and 2005 (DJSI North America). The Dow Jones Sustainability World Index represents the top 10% of the leading sustainability companies out of the biggest 2,500 companies in the Dow Jones Global Total Stock Market Index
  • Achieved Cancer Gold Standard™ accreditation from the CEO Roundtable on Cancer, recognizing our important actions to reduce the cancer risk of employees and their families

Read more about our Corporate Social Responsibility programs.

  • Headquarters in the U.S.: 500 Plaza Drive, Secaucus, New Jersey 07094  
  • Approximately 2,200 patient locations and dozens of clinical laboratories throughout the U.S. 


Read more about our locations