About Quest Diagnostics
Quest Diagnostics is a publicly listed company based in Madison (United States) founded in 1967. Integrated diagnostic and IT services are provided to healthcare organizations. The company has 56,000 employees. Quest Diagnostics has completed 23 acquisitions, including American Medical Laboratories, Athena Diagnostics and Blueprint Genetics. Its website questdiagnostics.com draws about 14.4 million monthly visits. Its focus areas include HealthTech, Healthcare Booking Platforms, Diagnostics and Marketplaces. Its competitors include WellnessFX and Fitnescity; 2 of its 2 listed competitors have raised funding.
Company details
Quest Diagnostics was founded in 1967 and is headquartered in Madison, United States. Operations focus on the healthcare diagnostics sector, where integrated diagnostic information and IT products and services are delivered to organizations. A broad menu of tests is offered to physicians, along with leadership in cancer diagnostics, anatomic pathology services, and interpretive consultations by medical and scientific staff.
- Headquarters Madison, United States
- Employees 56,000
- Stage Public
- SectorsHealthcare
- Website category Health
- Phone•••• ••••
- Website questdiagnostics.com
- Social LinkedIn
- Legal Name Quest Diagnostics Incorporated
- Annual Revenue$11.04 B (USD)11.78as on Dec 31, 2025
- Net Profit$988 M (USD)14.09as on Dec 31, 2025
- EBITDA$2.17 B (USD)13.89as on Dec 31, 2025
- Latest Funding Round$500M (USD), Debt – Conventional
May 2019
- Investors
- Employee Count56,000
- Investments & AcquisitionsAmerican Medical Laboratories
& 22 more
Associated legal entities of Quest Diagnostics
Quest Diagnostics is associated with 3 registered companies on The Company Check. Each company page carries the filings, financials, charges and directors of that entity.
| Legal entity | Status | Incorporated | Registered in | Revenue (FY 2025) | Employees | Directors | Company page |
|---|---|---|---|---|---|---|---|
| Qtest Diagnostics Llp CIN AAX-2016 | Active | 31 May 2021 | Pune, Maharashtra | 2 | View details | ||
| Quest Diagnostics Htas India Private Limited CIN U93090TG2017PTC132323 | Active | 22 Sep 2017 | Hyderabad, Telangana | ₹78.7 Cr | 221 | 6 | View details |
| Quest Diagnostics India Private Limited CIN U85121HR2006PTC041582 | Active | 14 Sep 2006 | Gurgaon, Haryana | ₹2.5 Cr | 2 | 5 | View details |
Apps and channels of Quest Diagnostics
Quest Diagnostics publishes 1 mobile app with over 10K+ downloads.
Funding Insights of Quest Diagnostics
- Total Rounds 3
- Last Round Debt – Conventional — $500M
- First Round $464,304
(Apr 2009)
- Investors Count 1
All 3 funding rounds of Quest Diagnostics with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| May 2019 | $500M | Debt – Conventional | – | – | – |
| Mar 2015 | $1.2B | Debt – Conventional | – | – | – |
| Apr 2009 | $464,304 | Grant | – | – |
1 investors in total: 1 institutional.
Investors in Quest Diagnostics
Quest Diagnostics has secured backing from 1 investor, including institutional investors. Prominent investors backing the company include National Science Foundation.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
A government-backed foundation providing seed-stage investments to support small businesses. | 1950 | nsf.gov | Arlington, United States |
Investor details for Quest Diagnostics
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
- Complete investor list
- Round participation
- Investor portfolios
- Co-investor network
Verified entity values are shown only after access is granted.
Board of directors of Quest Diagnostics
The boards of the 3 registered companies of Quest Diagnostics currently have 9 directors; the longest-serving is Arvind Kumar Anthati, appointed in 2017. 25 earlier directors have ceased.
| Director | Designation | Appointed | Tenure | Entity |
|---|---|---|---|---|
| Arvind Kumar Anthati DIN 07976623 | Director | 02 Nov 2017 | 9 yrs | Quest Diagnostics Htas India Private Limited |
| Brian Francis Lapenna DIN 07939709 | Director | 03 Jan 2019 | 7 yrs 10 mo | Quest Diagnostics India Private Limited, Quest Diagnostics Htas India Private Limited |
| Goutham Valluru DIN 08169427 | Director | 03 Jan 2019 | 7 yrs 10 mo | Quest Diagnostics India Private Limited, Quest Diagnostics Htas India Private Limited |
| Sandip R Patel DIN 08369230 | Director | 11 Mar 2019 | 7 yrs 8 mo | Quest Diagnostics India Private Limited |
| Lakshman Kumar Cheruvu DIN 08494409 | Director | 01 Jul 2019 | 7 yrs 4 mo | Quest Diagnostics Htas India Private Limited |
| Sachin Chandrakant Dhoka DIN 08126361 | Designated Partner | 31 May 2021 | 5 yrs 5 mo | Qtest Diagnostics Llp |
| Rohit Chandrakant Dhoka DIN 08126384 | Designated Partner | 31 May 2021 | 5 yrs 5 mo | Qtest Diagnostics Llp |
| Sean D Mersten DIN 10704483 | Director | 26 Sep 2024 | 2 yrs 1 mo | Quest Diagnostics India Private Limited |
| Anthony Lawrence Barton DIN 11315800 | Additional Director | 15 Dec 2025 | 10 mo | Quest Diagnostics Htas India Private Limited |
People of Quest Diagnostics
603 people are tracked at Quest Diagnostics (274 in leadership, 10 in board & advisors, 319 in team); the tracked headcount is 56,000.
| Name | Role | Group |
|---|---|---|
Jackie Lawrence | Sales Director, Commercial | Leadership |
Elizabeth Levison | Director, Leadership Development & Learning | Leadership |
Robert W. | National Business Development Director Advanced Oncology | Digital Pathology | Leadership |
John Dainton | Business Director, Payer Analytics Portfolio | Leadership |
Felicia Bourke | Senior Sales Director | Leadership |
Narayanan Veeraraghavan | Executive Director - Advanced Diagnostics Technology | Leadership |
Anthony Moraglia | Sales Director | Leadership |
John Fortner | National Director Of Business Development | Leadership |
Kerry Kennedy | Regional Vice President, Commercial East | Leadership |
Jeff Polevoy | Senior Director, Market Research & Analytics | Leadership |
Anna C. | Director, Human Resources/ Co-chair Hispanic Latino EBN | Leadership |
Efe Sahinoglu | Executive Finance Director (region Cfo) - Great Midwest Region | Leadership |
Anna Gerasimova | Associate Director Of Bioinformatics | Leadership |
Dana Harbin | Sr. Director, Human Resources Business Partner - Clinical Solutions | Leadership |
Wendy Rezendes | Executive Director, Human Resources - Great Midwest Region | Leadership |
Mark C. Kruzel | Medical Director - Consumer Initiated Testing Questhealth.com | Leadership |
Ron K. | Director, Bioinformatics | Leadership |
Eileen Carreras Nidecker | Sr. Director - Human Resources Strategy, Culture, And Talent Retention Programs | Leadership |
Elias Sheer | Sales Director | Leadership |
Reha Toydemir | Senior Medical Director | Leadership |
583 more people are available in the full profile.
Complete people profiles for Quest Diagnostics
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
- Full employee list
- Team structure
- Board tenure
- Professional contacts
Verified entity values are shown only after access is granted.
IPO & Listings of Quest Diagnostics
Quest Diagnostics is a publicly listed company on the NYSE with ticker symbol DGX in USA, operating in the Health services sector. As a publicly traded entity, the company provides investors with opportunities to participate in its growth story through equity ownership. The listing enables access to capital markets, enhances corporate visibility, and provides liquidity for shareholders while maintaining transparency through regulatory compliance and regular financial disclosures.
- IPO date28 May 2004
- Listed onNASDAQ: SP
- Listed entityQuest Diagnostics Incorporated
- Exchange sectorHealth services
- ISINUS74834L1008
- Share price$230.46 (-0.93% on the day) · 2026-10-13
- Market capitalisation$25.44B
- Price to earnings24.4
- EPS (diluted, trailing year)$9.43
- Dividend yield1.43%
- Volume (last session)1,010,231
Financials of Quest Diagnostics
Figures of Quest Diagnostics India Private Limited, the primary company behind Quest Diagnostics, for FY 2025. Revenue was ₹2.48 Cr (+12% year on year). Net profit was ₹97 Lakh (39% margin). EBITDA was ₹97.7 Lakh (39% margin). Revenue has grown at a compounded annual rate of +28% over three years and -9% over five years.
- ₹2.48 CrRevenue · FY 2025 · +12% YoY
- ₹97 LakhNet profit · 39% margin
- ₹97.7 LakhEBITDA · 39% margin
- ₹407 CrPaid-up capital
- 2Employees (provident fund records)
- +28%Revenue CAGR, 3 years
- -9%Revenue CAGR, 5 years
| Year | Revenue | Net income | EBITDA |
|---|---|---|---|
| 2025 | $11.04B | $988.0M | $2.17B |
| 2024 | $9.87B | $866.0M | $1.91B |
| 2023 | $9.25B | $850.0M | $1.79B |
| 2022 | $9.88B | $942.0M | $2.06B |
| 2021 | $10.79B | $1.99B | $2.85B |
Balance sheet, profit and loss, cash flow and ratios of Quest Diagnostics India Private Limited are on its company page.
Detailed financial statements for Quest Diagnostics
Statement rows, ratios, five-year trends and downloadable financials of the group companies require an active premium plan.
- Statement rows
- Financial ratios
- Five-year trends
- Downloads
Verified entity values are shown only after access is granted.
Investments & Acquisitions by Quest Diagnostics
Quest Diagnostics has strategically engaged in corporate development activities, having acquired 23 companies. Notable acquisitions include American Medical Laboratories, Athena Diagnostics and Blueprint Genetics.
| Company Name | Description | Domain | Location | Founded | Acquired | Amount |
|---|---|---|---|---|---|---|
Diagnostic pathology services are provided through a Canadian lab network. | lifelabs.com | Toronto, Canada | 1998 | Jul 2024 | •••• | |
Personalized cancer diagnostic tests are provided for minimal residual disease. | haystackoncology.com | Baltimore, United States | 2021 | Apr 2023 | $300M | |
Chronic patients are coached online and provided educational tools. | packhealth.com | Birmingham, United States | 2013 | Jan 2022 | •••• | |
Provider of clinical diagnostic services | labtechdiagnostics.net | Anderson, United States | 2011 | Dec 2021 | •••• | |
Genetic diagnostics and clinical interpretation for hereditary diseases are provided. | blueprintgenetics.com | Espoo, Finland | 2012 | Jan 2020 | •••• | |
Standalone pathology lab | phenopath.com | Seattle, United States | 1998 | Sep 2018 | •••• | |
Pathology lab services are provided independently in Woburn. | reprosource.com | Woburn, United States | 2008 | Sep 2018 | •••• | |
Fitness and wellness services are provided by MedXM center. | medxm1.com | Santa Ana, United States | 1990 | Jan 2018 | •••• | |
Standalone medical diagnostic laboratory center | shiel.com | Brooklyn, United States | 1919 | Dec 2017 | •••• | |
Cardiovascular biomarkers are utilized for disease prevention and management. | clevelandheartlab.com | Cleveland, United States | 2008 | Oct 2017 | •••• |
Complete acquisition details for Quest Diagnostics
Acquired stakes, deal sources and the complete acquisition history require an active premium plan.
- Acquired stakes
- Deal sources
- Complete history
- Exports
Verified entity values are shown only after access is granted.
Timeline of Quest Diagnostics
14 dated milestones of Quest Diagnostics across 57 years, from founding to its latest funding, stage changes and deals.
- Founded Quest Diagnostics is founded.
- IPO Lists on the stock exchange (IPO).
- Funding First funding round of $464K.
- Acquisition Acquires Cleveland HeartLab.
- Acquisition Acquires Shiel Medical Laboratory.
- Acquisition Acquires MedXM.
- Acquisition Acquires Reprosource.
- Acquisition Acquires PhenoPath.
- Funding Latest funding round, Debt – Conventional, of $500.0M.
- Acquisition Acquires Blueprint Genetics.
- Acquisition Acquires Labtech Diagnostics.
- Acquisition Acquires Pack Health.
- Acquisition Acquires Haystack Oncology.
- Acquisition Acquires LifeLabs.
Competitors of Quest Diagnostics
Quest Diagnostics has 2 listed competitors in our database, 2 of them funded. They include WellnessFX and Fitnescity.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| wellnessfx.com | 2010 | San Francisco, United States | $5.85M | 16 | Personalized health is tracked via blood tests, training, and telemedicine. | |
| fitnescity.com | 2014 | New York, United States | $120,000 | 7 | Chain of general clinics |
Detailed competitors of Quest Diagnostics
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
- Operating metrics
- Benchmarks
- Competitive positioning
Verified entity values are shown only after access is granted.
Web traffic of Quest Diagnostics
The website of Quest Diagnostics (questdiagnostics.com) receives about 14.4M visits a month and ranks #2,905 among all websites worldwide, #27 in Health.
- Monthly visits14.4M
▲ 4.3% vs previous month
- Unique visitors4.8M
per month
- Global rank#2,905
among all websites
- Category rank#27
Health · Health
- Bounce rate23%
- Pages per visit6.5
- Average visit5 min 27 sec
- DevicesDesktop 51% · Mobile 49%
Websites whose visitors overlap most with Quest Diagnostics. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
questhealth.com | questhealth.com | 100% | #35,385 | – | |
| labcorp.com | 94% | 14.1M | #3,241 | View details | |
myupdox.com | myupdox.com | 62% | #28,143 | – | |
| thorne.com | 61% | 2.5M | #25,056 | View details | |
| nhs.uk | 61% | 39.2M | #1,687 | View details | |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 40 similar websites and full traffic analytics for Quest Diagnostics
The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.
- 40 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
Verified entity values are shown only after access is granted.
Top companies in Digital Health & Telemedicine
3 companies that operate in the same segment as Quest Diagnostics (Digital Health & Telemedicine) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
An application is provided for comparing prescription drug prices nationwide. | 2011 | Santa Monica, California, United States | USD 22.21 M | USD 796.85 M | 1,063 | |
Healthcare appointments are booked online via Zocdoc's platform. | 2007 | New York, New York, United States | USD 425.97 M | USD 4.66 M | 1,365 | |
Alto Pharmacy is focused on providing convenient prescription delivery services. | 2015 | San Francisco, California, United States | USD 591.64 M | 802 |
Unlock complete access to The Company Check
Get unrestricted viewing across everything we track — from companies and brands to investors, funding rounds, acquisitions, financials, and more.
- Unlimited viewing on all profiles Companies, investors, financials, funding, acquisitions & directors
- Full access to every database India & global coverage, advanced filters and rich profile details
- Always-on access from your team account Single premium plan for everything you see on the portal
Related news about Quest Diagnostics
Complete news archive for Quest Diagnostics
Full article history, source details, and older brand coverage require an active premium plan.
- Full article archive
- Source and publication date
- Older coverage
- Brand-specific news history
Verified entity values are shown only after access is granted.
Frequently Asked Questions about Quest Diagnostics
Quest Diagnostics was founded in 1967 and raised its 1st funding round 42 years after it was founded.
Quest Diagnostics is headquartered in Madison, United States. It is registered at Madison, Wisconsin, United States.
Quest Diagnostics has 56,000 employees.
Annual revenue of Quest Diagnostics is $11.04B as on Dec 31, 2025.
Quest Diagnostics was founded in 1967 and is headquartered in Madison, United States. Operations focus on the healthcare diagnostics sector, where integrated diagnostic information and IT products and services are delivered to organizations. A broad menu of tests is offered to physicians, along with leadership in cancer diagnostics, anatomic pathology services, and interpretive consultations by medical and scientific staff.
Quest Diagnostics's top competitors include WellnessFX and Fitnescity.
Yes, Quest Diagnostics is publicly traded on NYSE under the ticker symbol DGX.
Quest Diagnostics has made 23 acquisitions, including American Medical Laboratories, Athena Diagnostics, and Blueprint Genetics.
Quest Diagnostics has 1 investor. Key investors include National Science Foundation.
Quest Diagnostics is associated with 3 legal entities: Qtest Diagnostics Llp, Quest Diagnostics India Private Limited, Quest Diagnostics Htas India Private Limited.
The legal entities of Quest Diagnostics currently have 11 directors, including Sachin Chandrakant Dhoka, Rohit Chandrakant Dhoka, Brian Francis Lapenna and others.
Yes. Quest Diagnostics publishes Quest Lab Alert for Physicians, with over 10,000 downloads.