Companies
Quest Diagnostics
Healthcare servicesSecaucus, New JerseyDGXAbout 57,000 employees
More about Quest Diagnostics
Clinical laboratory company that provides diagnostic testing for patients, doctors, hospitals and insurers
Revenue
$11.0B
Fiscal 2025, up 11.8%
Employees
About 57,000
As of December 2025, incl. about 6,800 at LifeLabs
Stock
DGX
New York Stock Exchange
Headquarters
Secaucus, New Jersey
CEO
Jim Davis
Since November 2022
Main businessesDiagnostic information services, ExamOne risk assessment, Quanum health IT
Current strategyGrowing its test menu and provider partnerships, adding 1–2% revenue a year through acquisitions, and cutting costs through automation and AI
Recent workforce changes$53M of restructuring and integration charges in 2025, mainly tied to workforce reductions
CompetitorsLabcorp, Sonic Healthcare, BioReference Health
Related companiesLabcorp
Checked October 11, 2026 · Sources: biopharmawatch.com, sec.gov, 1stoncology.com
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