Company lists · Data refreshed October 2026

Top 25 Medical diagnostic services based in the United States

RevenueBase identified 1,828 company matches for medical diagnostic services associated with the United States as of October 2026 and tracks 162,083 professional contacts across them, including 42,796 with verified work emails. Houston is the largest hub.

This list covers company matches for medical diagnostic services associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 27, 2026 How this list was built
1,828Companies
162,083Contacts tracked
42,796Verified emails
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The 25 largest medical diagnostic services based in the United States

Ranked by team size
Top 25 of 1,828 company matches for medical diagnostic services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 27, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBurlington, NC, United StatesHQ recorded Oct 27, 202610001+39,299 contacts →

Exact match

“Clear and confident health care decisions begin with questions.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
2Exact matchSecaucus, NJ, United StatesHQ recorded Oct 27, 202610001+29,250 contacts →

Exact match

“Quest Diagnostics (NYSE: DGX) empowers people to take action to improve health outcomes.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
3Exact matchBrea, CA, United StatesHQ recorded Oct 27, 202610001+10,426 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
4Exact matchFranklin, TN, United StatesHQ recorded Oct 27, 202610001+9,165 contacts →

Exact match

“Community Health Systems is one of the nation's leading healthcare providers.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
5Exact matchLos Angeles, CA, United StatesHQ recorded Oct 27, 202610001+3,285 contacts →

Exact match

“RadNet, Inc.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
6Exact matchWaltham, MA, United StatesHQ recorded Oct 27, 202610001+3,071 contacts →

Exact match

“At Revvity, “impossible” is inspiration, and ""can't be done"" is a call to action.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
7Exact matchGlendora, CA, United StatesHQ recorded Oct 27, 20261,001-5,0001,657 contacts →

Exact match

“Leidos QTC Health Services collaborates closely with government and non-government customers to address current and future program needs within the health services domain.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
8Exact matchElmwood Park, NJ, United StatesHQ recorded Oct 27, 20261,001-5,0001,608 contacts →

Exact match

“For more than four decades, BioReference has built a legacy based on scientific excellence, innovation and world-class service in laboratory testing solutions.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
9Exact matchAustin, TX, United StatesHQ recorded Oct 27, 20261,001-5,0001,589 contacts →

Exact match

“Clinical Pathology Laboratories (CPL) is a medically-led company dating back to 1948.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
10Exact matchLenexa, KS, United StatesHQ recorded Oct 27, 20261,001-5,0001,369 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
11Exact matchPhoenix, AZ, United StatesHQ recorded Oct 27, 20261,001-5,0001,248 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
12Exact matchBrentwood, TN, United StatesHQ recorded Oct 27, 20261,001-5,0001,153 contacts →

Exact match

“Founded in 1965, PathGroup is a premier provider of anatomic, clinical and molecular pathology services, as well as one of the largest providers of women’s health services in the…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
13Exact matchSt Louis Park, MN, United StatesHQ recorded Oct 27, 20261,001-5,0001,152 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
14Exact matchTampa, FL, United StatesHQ recorded Oct 27, 20261,001-5,0001,091 contacts →

Exact match

“Akumin is a leading U.S.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
15Exact matchSparks, MD, United StatesHQ recorded Oct 27, 20261,001-5,000902 contacts →

Exact match

“TridentCare is the leading portable diagnostic services solution for a variety of healthcare markets, delivering quality services at our customers’ locations nationwide.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
16Exact matchAddison, TX, United StatesHQ recorded Oct 27, 20261,001-5,000742 contacts →

Exact match

“Solis Mammography is a specialized healthcare provider that has been dedicated to helping women achieve and maintain breast health for 40 years.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
17Exact matchGreensboro, NC, United StatesHQ recorded Oct 27, 20261,001-5,000683 contacts →

Exact match

“Solstas Lab Partners has become one of the nation’s fastest-growing and largest full-service laboratories because we understand that our business is more than just test results.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
18Exact matchAlbuquerque, NM, United StatesHQ recorded Oct 27, 20261,001-5,000678 contacts →

Exact match

“TriCore is a community-based, independent, clinical reference laboratory that provides full-service, state-of-the-art laboratory tests to health care professionals and their…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
19Exact matchDallas, TX, United StatesHQ recorded Oct 27, 20265,001-10,000630 contacts →

Exact match

“Sonic Healthcare USA is a subsidiary of Sonic Healthcare Limited, one of the world's largest medical diagnostics companies, providing laboratory services to medical practitioners…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
20Exact matchHammond, IN, United StatesHQ recorded Oct 27, 20261,001-5,000614 contacts →

Exact match

“Alverno Laboratories manages 32 hospital laboratories and provides laboratory services to two free standing emergency departments and thousands of physician offices and other…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
21Exact matchAllentown, PA, United StatesHQ recorded Oct 27, 20261,001-5,000607 contacts →

Exact match

“Our Vision is To create a future where every person has the clarity and insight to live healthier.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
22Exact matchQuincy, MA, United StatesHQ recorded Oct 27, 2026501-1,000596 contacts →

Exact match

“Shields Health is an independent, New England-based medical service provider with a national reputation for blending exceptional customer service with superior technology.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
23Exact matchSan Diego, CA, United StatesHQ recorded Oct 27, 20261,001-5,000567 contacts →

Exact match

“As one of the largest, most comprehensive medical groups in San Diego County, our 16 locations offer services such as primary and specialty care, laboratory, physical therapy…”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
24Exact matchToledo, OH, United StatesHQ recorded Oct 27, 20261,001-5,000558 contacts →

Exact match

“A large private multi-specialty physician group in the city of Toledo.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase
25Exact matchHorsham, PA, United StatesHQ recorded Oct 27, 20261,001-5,000535 contacts →

Exact match

“As America's leading provider of mobile imaging services, our MobilexUSA X-Ray technologists travel to more than facilities located throughout most of the United States.”

Recorded in the RevenueBase company graph · Oct 27, 2026 · View company records in RevenueBase

Showing 25 of 1,828 medical diagnostic services based in the United States

See the full list, filter by size, metro and specialty, and access 42,796 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Medical diagnostic services based in the United States at a glance

As of Oct 27, 2026
26.4%Verified-email coverage
88.7Average contacts per company
11-50Median size (employees)
2.4%Largest-city concentration · Houston
Oct 27, 2026Page data refreshed

Companies by employee count

1-10
573
11-50
634
51-200
393
201-500
111
501-1,000
45
1,001-5,000
51
5,001-10,000
2
10001+
14

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 1,828 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “medical diagnostic services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 42,796 professional contacts with verified work emails across the full matched dataset. 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 October 27, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “medical diagnostic services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many medical diagnostic services are there based in the United States?

RevenueBase identified 1,828 company matches for medical diagnostic services associated with the United States as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Labcorp tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most medical diagnostic services?

Houston leads with 44 company records, followed by New York (37) and Miami (29).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 42,796 professional contacts with verified work emails tracked across these 1,828 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 27, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,828 medical diagnostic services based in the United States. Start with a free account, no credit card.

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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 SmartSearch, 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.