Company lists · Data refreshed September 2026

Top 25 Healthcare diagnostics companies based in the United States

Name: Healthcare diagnostics companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 2,112 companies tracked

RevenueBase identified 2,112 healthcare diagnostics companies headquartered in the United States as of September 2026 and tracks 278,627 professional contacts across them, including 99,217 with verified work emails. New York is the largest hub.

This list covers healthcare diagnostics companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 15, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 15, 2026 86% judged on-target in blind review

2,112Companies

278,627Contacts tracked

99,217Verified emails

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The 25 largest healthcare diagnostics companies based in the United States

Ranked by team size

Top 25 of 2,112 healthcare diagnostics companies based in the United States, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to healthcare diagnostics companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Johnson & Johnson	Indirect evidence	New Brunswick, CA, United StatesHQ checked Sep 15, 2026	10001+	66,919 contacts →
	Indirect evidence “At Johnson & Johnson, we believe health is everything.” Source: RevenueBase Database · checked Sep 15, 2026
2	Labcorp	Indirect evidence	Burlington, NC, United StatesHQ checked Sep 15, 2026	10001+	38,427 contacts →
	Indirect evidence “Clear and confident health care decisions begin with questions.” Source: RevenueBase Database · checked Sep 15, 2026
3	Quest Diagnostics	Partial evidence	Secaucus, NJ, United StatesHQ checked Sep 15, 2026	10001+	27,884 contacts →
	Partial evidence “Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes.” Source: RevenueBase Database · checked Sep 15, 2026
4	Beckman Coulter Diagnostics	Partial evidence	Brea, CA, United StatesHQ checked Sep 15, 2026	10001+	10,069 contacts →
	Partial evidence “A global leader in advanced diagnostics, Beckman Coulter has challenged convention to elevate the diagnostic laboratory’s role in improving patient health for more than 80 years.” Source: RevenueBase Database · checked Sep 15, 2026
5	Waters Corporation	Partial evidence	Milford, MA, United StatesHQ checked Sep 15, 2026	10001+	8,189 contacts →
	Partial evidence “Waters Corporation (NYSE: WAT) is a global leader in life sciences and diagnostics, dedicated to accelerating the benefits of pioneering science through analytical technologies…” Source: RevenueBase Database · checked Sep 15, 2026
6	Bio-Rad Laboratories	Strong evidence	Hercules, CA, United StatesHQ checked Sep 15, 2026	5,001-10,000	8,149 contacts →
	Strong evidence “Bio-Rad provides the healthcare industry with innovative and useful products that help life science researchers accelerate the discovery process and medical diagnostic labs obtain…” Source: RevenueBase Database · checked Sep 15, 2026
7	Exact Sciences	Indirect evidence	Madison, WI, United StatesHQ checked Sep 15, 2026	5,001-10,000	5,907 contacts →
	Indirect evidence “Exact Sciences is now @Abbott.” Source: RevenueBase Database · checked Sep 15, 2026
8	Natera	Indirect evidence	Austin, TX, United StatesHQ checked Sep 15, 2026	5,001-10,000	5,354 contacts →
	Indirect evidence “Natera™ is a global leader in cell-free DNA and precision medicine, dedicated to oncology, women’s health, and organ health.” Source: RevenueBase Database · checked Sep 15, 2026
9	Cepheid	Strong evidence	Sunnyvale, CA, United StatesHQ checked Sep 15, 2026	5,001-10,000	4,445 contacts →
	Strong evidence “Cepheid is dedicated to improving healthcare by pioneering molecular diagnostics that combine speed, accuracy, and flexibility.” Source: RevenueBase Database · checked Sep 15, 2026
10	Guardant Health	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 15, 2026	1,001-5,000	3,321 contacts →
	Indirect evidence “Guardant Health is a leading precision medicine company focused on guarding wellness and giving every person more time free from cancer.” Source: RevenueBase Database · checked Sep 15, 2026
11	Radnet	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 15, 2026	10001+	3,126 contacts →
	Indirect evidence “RadNet, Inc.” Source: RevenueBase Database · checked Sep 15, 2026
12	Revvity	Indirect evidence	Waltham, MA, United StatesHQ checked Sep 15, 2026	10001+	2,938 contacts →
	Indirect evidence “At Revvity, “impossible” is inspiration, and ""can't be done"" is a call to action.” Source: RevenueBase Database · checked Sep 15, 2026
13	Ortho Clinical Diagnostics	Indirect evidence	Raritan, NJ, United StatesHQ checked Sep 15, 2026	1,001-5,000	2,730 contacts →
	Indirect evidence “QuidelOrtho develops and manufactures intelligent solutions that are transforming data into understanding and action for more people in more places every day, helping spot trends…” Source: RevenueBase Database · checked Sep 15, 2026
14	Myriad Genetics	Partial evidence	Salt Lake City, UT, United StatesHQ checked Sep 15, 2026	1,001-5,000	2,718 contacts →
	Partial evidence “Myriad Genetics is a leading molecular diagnostic testing and precision medicine company dedicated to advancing health and well-being for all.” Source: RevenueBase Database · checked Sep 15, 2026
15	Radiology Partners	Indirect evidence	Nashville, TN, United StatesHQ checked Sep 15, 2026	5,001-10,000	2,033 contacts →
	Indirect evidence “Our mission is to transform radiology.” Source: RevenueBase Database · checked Sep 15, 2026
16	Werfen North America	Indirect evidence	Bedford, MA, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,908 contacts →
	Indirect evidence “Werfen is a growing, family-owned, innovative company founded in 1966 in Barcelona, Spain.” Source: RevenueBase Database · checked Sep 15, 2026
17	Foundation Medicine	Partial evidence	Boston, MA, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,747 contacts →
	Partial evidence “Foundation Medicine is a global, patient-focused precision medicine company delivering high-quality, transformative diagnostic solutions in cancer and other diseases.” Source: RevenueBase Database · checked Sep 15, 2026
18	Neogenomics Laboratories	Indirect evidence	Fort Myers, FL, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,678 contacts →
	Indirect evidence “Our vision: A world where every cancer treatment decision is as personal as the patient.” Source: RevenueBase Database · checked Sep 15, 2026
19	Fujifilm Healthcare Americas Corporation	Partial evidence	Lexington, MA, United StatesHQ checked Sep 15, 2026	501-1,000	1,622 contacts →
	Partial evidence “FUJIFILM Healthcare Americas Corporation is a comprehensive healthcare company that has an extensive range of technology and expertise in the detection, diagnosis, and treatment…” Source: RevenueBase Database · checked Sep 15, 2026
20	Bioreference	Indirect evidence	Elmwood Park, NJ, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,610 contacts →
	Indirect evidence “For more than four decades, BioReference has built a legacy based on scientific excellence, innovation and world-class service in laboratory testing solutions.” Source: RevenueBase Database · checked Sep 15, 2026
21	Clinical Pathology Laboratories	Indirect evidence	Austin, TX, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,528 contacts →
	Indirect evidence “Clinical Pathology Laboratories (CPL) is a medically-led company dating back to 1948.” Source: RevenueBase Database · checked Sep 15, 2026
22	Examone, A Quest Diagnostics Company	Indirect evidence	Lenexa, KS, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,369 contacts →
	Indirect evidence “ExamOne has provided a robust portfolio of laboratory, paramedical and data solutions since 1972, giving it a great deal of understanding about the needs of life insurance and…” Source: RevenueBase Database · checked Sep 15, 2026
23	Sysmex America, INC	Indirect evidence	Lincolnshire, IL, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,313 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 15, 2026
24	Sonora Quest Laboratories Laboratory Sciences Of Arizona	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,222 contacts →
	Partial evidence “Sonora Quest Laboratories, a subsidiary of Laboratory Sciences of Arizona, is an Arizona-based joint venture between Banner Health and Quest Diagnostics (NYSE: DGX) that makes up…” Source: RevenueBase Database · checked Sep 15, 2026
25	Rayus Radiology	Partial evidence	St Louis Park, MN, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,111 contacts →
	Partial evidence “As a leading national subspecialty provider for advanced diagnostic and interventional radiology services, RAYUS Radiology is challenging the status quo by shining the light on…” Source: RevenueBase Database · checked Sep 15, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: healthcare diagnostics companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names healthcare diagnostics companies.
Partial evidence: Its own public description names part of healthcare diagnostics companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name healthcare diagnostics companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 2,112 healthcare diagnostics companies based in the United States

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Healthcare diagnostics companies based in the United States at a glance

As of Sep 15, 2026

35.6%Verified-email coverage

131.9Average contacts per company

11-50Median size (employees)

2.5%Largest-city concentration · New York

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

687

11-50

729

51-200

432

201-500

120

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 2,112 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among healthcare diagnostics companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “healthcare diagnostics companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names healthcare diagnostics companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among healthcare diagnostics companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 99,217 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 15, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Healthcare diagnostics companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names healthcare diagnostics companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many healthcare diagnostics companies are there based in the United States?

RevenueBase identified 2,112 healthcare diagnostics companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Johnson & Johnson, headquartered in Milpitas, tops this list with the largest team on record.

Which city has the most healthcare diagnostics companies?

New York leads with 52 headquartered companies, followed by Houston (49) and San Diego (38).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 99,217 verified decision-maker contacts tracked across these 2,112 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 15, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.