Quest Diagnostics is a leading American clinical laboratory. A Fortune 500 company, Quest operates in the United States, Puerto Rico, Mexico, and Brazil. Quest also maintains collaborative agreements with various hospitals and clinics across the globe. It offers a broad range of products and services that benefit patients, healthcare providers, pharmaceutical companies, life insurance companies, and employers. Their services range from routine blood tests — such as white blood cell count, pap testing, and A1C levels — to complex and specialized molecular and gene-based testing. Quest Diagnostics empowers people to take action to improve health outcomes. Derived from the world's largest database of clinical lab results, their diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors, and improve healthcare management.
The headquarters serves as the central hub for corporate strategy, executive leadership, administrative functions, finance, legal, IT, and overall operational management for the company's extensive network of laboratories and patient service centers.
The Secaucus headquarters is a modern corporate office facility designed to foster collaboration and efficiency. It features contemporary workspaces, advanced communication technologies, and amenities to support its workforce. While not a public venue, it represents a significant corporate presence.
The work culture at Quest Diagnostics' headquarters is characterized by professionalism, innovation, and a strong focus on quality and integrity. Employees are driven by the company's mission to improve health outcomes, fostering a collaborative environment geared towards scientific excellence and operational efficiency.
The Secaucus headquarters is highly significant as it serves as the nerve center for Quest Diagnostics' extensive operations across North America and its growing international presence. It centralizes executive leadership, strategic planning, and key corporate functions, enabling effective management of one of the world's largest diagnostic information services providers. Its location in the New Jersey/New York metropolitan area also provides access to a rich talent pool and key business partners.
While primarily focused on the United States, where it operates an extensive network of patient service centers and laboratories, Quest Diagnostics also has a significant international presence. Key international operations include laboratories and business offices in India, Mexico, and Ireland. Globally, Quest Diagnostics supports clinical trials for pharmaceutical companies, provides specialized diagnostic testing services, and offers health IT solutions to healthcare providers and life science organizations, extending its diagnostic expertise beyond U.S. borders.
500 Plaza Drive
Secaucus
New Jersey
USA
Address: 10101 Renner Blvd, Lenexa, KS 66219, USA
Acts as a critical testing hub for physicians, hospitals, and other healthcare providers in the Midwestern United States, ensuring timely and accurate diagnostic results.
Address: 33608 Ortega Hwy, San Juan Capistrano, CA 92675, USA
Serves as a national and international reference laboratory for specialized and complex diagnostic tests, supporting clinicians with cutting-edge diagnostic capabilities and driving R&D efforts.
Address: 14225 Newbrook Dr, Chantilly, VA 20151, USA
Provides essential diagnostic services to a densely populated area, supporting rapid turnaround times for common and specialized tests in the Mid-Atlantic.
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As of April 2025, Quest Diagnostics' leadership includes:
Quest Diagnostics has been backed by several prominent investors over the years, including:
Quest Diagnostics has strategically strengthened its leadership team over the past year, particularly with key appointments in payer strategy and employer solutions. These hires underscore the company's focus on expanding market engagement and enhancing specialized service delivery. There have been no major publicly announced C-suite departures in the immediate last 12 months, indicating stability at the top executive level.
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Quest Diagnostics typically uses a standard corporate email format for its employees, most commonly combining the employee's first and last name. While variations might exist for specific roles or due to name conflicts, the primary format is consistent.
FirstName.LastName@questdiagnostics.com
Format
jane.doe@questdiagnostics.com
Example
90%
Success rate
Quest Diagnostics Newsroom • February 1, 2024
Quest Diagnostics announced its financial results for the fourth quarter and full year ended December 31, 2023. The company detailed its revenue performance, earnings, and provided its financial outlook for 2024, emphasizing growth in its base business and strategic initiatives....more
Quest Diagnostics Newsroom • January 9, 2024
Quest Diagnostics, in collaboration with Memorial Sloan Kettering Cancer Center (MSK), announced the launch of a new liquid biopsy test designed for the early detection of prostate cancer. This partnership aims to leverage MSK's research expertise and Quest's national reach to improve patient access to innovative cancer diagnostics....more
Quest Diagnostics Newsroom • November 2, 2023
Quest Diagnostics was recognized as a Leader in the IDC MarketScape: U.S. Clinical Laboratory Diagnostic Testing Services 2023 Vendor Assessment. The report highlighted Quest's comprehensive service offerings, innovation in diagnostics, and expansive network as key strengths....more
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