Company lists · Data refreshed September 2026

Top 25 Occupational health monitoring companies based in the United States

Name: Occupational health monitoring 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 20, 2026 435 companies tracked

RevenueBase identified 435 company matches for occupational health monitoring companies associated with the United States as of September 2026 and tracks 13,955 professional contacts across them, including 2,323 with verified work emails. Houston is the largest hub.

This list covers company matches for occupational health monitoring companies 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 September 20, 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 Sep 20, 2026 How this list was built

435Companies

13,955Contacts tracked

2,323Verified emails

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The 25 largest occupational health monitoring companies based in the United States

Ranked by team size

Top 25 of 435 company matches for occupational health monitoring companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Concentra	Exact match	Addison, TX, United StatesHQ recorded Sep 20, 2026	10001+	7,091 contacts →
	Exact match “WHO WE ARE: Concentra is the leader in occupational health with 40+ years of improving the health of America's workforce, one patient at a time.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Workcare, INC	Exact match	Orange, CA, United StatesHQ recorded Sep 20, 2026	501-1,000	463 contacts →
	Exact match “WorkCare, Inc, a U.S-based occupational health, wellness and absence management company, is part of the APM Group.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Mesa Laboratories, INC	Exact match	Lakewood, CO, United StatesHQ recorded Sep 20, 2026	501-1,000	323 contacts →
	Exact match “Mesa Labs helps you monitor and maintain higher standards in any environment – from the air we breathe to the critical moments of life-saving care.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Examinetics	Exact match	Overland Park, KS, United StatesHQ recorded Sep 20, 2026	201-500	274 contacts →
	Exact match “Examinetics is the leading provider of occupational health solutions, offering services across the entire employee lifecycle with several delivery methods.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Mobile Health	Exact match	Long Island City, United StatesHQ recorded Sep 20, 2026	51-200	181 contacts →
	Exact match “Since 1984, Mobile Health has been a trusted employee screening and occupational health provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Careonsite	Exact match	Torrance, CA, United StatesHQ recorded Sep 20, 2026	201-500	179 contacts →
	Exact match “For more than 45 years, CAREonsite has been a best-in-class provider of occupational healthcare solutions that help businesses of all sizes protect employee health and improve…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Forensic Analytical Consulting Services, INC	Exact match	Hayward, CA, United StatesHQ recorded Sep 20, 2026	51-200	172 contacts →
	Exact match “With a staff of over 150 employees in the San Francisco, Sacramento, Los Angeles, San Diego, Modesto, Bakersfield, Fresno, Portland, Chicago, and Grand Rapids offices, Forensic…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Prime Occupational Medicine	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 20, 2026	51-200	130 contacts →
	Exact match “PRIME Occupational Medicine is committed to providing high-quality occupational health services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	MBI Industrial Medicine	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 20, 2026	201-500	123 contacts →
	Exact match “Founded in 1982, MBI operates 26 clinics across Arizona, Colorado and Nevada.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	JES Tech	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	109 contacts →
	Exact match “JES Tech was founded in 2004 in Houston, Texas.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Work Health Solutions	Exact match	San Jose, CA, United StatesHQ recorded Sep 20, 2026	51-200	107 contacts →
	Exact match “We’re redefining the occupational health space to deliver better programs and care for all.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	A-Tech Consulting, INC	Exact match	Orange, CA, United StatesHQ recorded Sep 20, 2026	51-200	97 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	SKC INC	Exact match	Eighty Four, PA, United StatesHQ recorded Sep 20, 2026	51-200	95 contacts →
	Exact match “SKC is a well-known and respected leader in industrial hygiene and occupational safety.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	Occucare International	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	51-200	88 contacts →
	Exact match “Occucare International is a global occupational health service provider founded in 1980.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Akeso Occupational Health	Exact match	Irvine, CA, United StatesHQ recorded Sep 20, 2026	201-500	82 contacts →
	Exact match “At Akeso Occupational Health, we form a partnership between the employer, employee and insurer to minimize the risk of work related injury and provide the best, most comprehensive…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Occupational Services, INC	Exact match	San Diego, CA, United StatesHQ recorded Sep 20, 2026	11-50	74 contacts →
	Exact match “Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Unitypoint Health	Exact match	West Des Moines, IA, United StatesHQ recorded Sep 20, 2026	11-50	72 contacts →
	Exact match “Connecting with your community is important, and we’re excited you want to get to know us better!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Vitalcheck Wellness	Exact match	New York, NY, United StatesHQ recorded Sep 20, 2026	11-50	66 contacts →
	Exact match “VitalCheck Wellness is a healthcare services company that coordinates occupational health, pre-employment screening, and preventive care for employers nationwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Mobile Medical Corporation	Exact match	Bethel Park, PA, United StatesHQ recorded Sep 20, 2026	51-200	65 contacts →
	Exact match “Mobile Medical Corporation (MMC) is a premier provider of workplace substance abuse testing and on-site medical services nationwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	IES Safety, LLC	Exact match	Louisville, KY, United StatesHQ recorded Sep 20, 2026	201-500	65 contacts →
	Exact match “IES Safety, LLC delivers expert occupational safety and health consulting through seasoned professionals who help clients proactively manage risk and maintain regulatory…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Caduceus	Exact match	Hapeville, GA, United StatesHQ recorded Sep 20, 2026	51-200	58 contacts →
	Exact match “The Premier Occupational Medicine Provider.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	OHD	Exact match	Birmingham, AL, United StatesHQ recorded Sep 20, 2026	11-50	54 contacts →
	Exact match “OHD is a company committed to our Mission of Passionately Protecting The Health Of The World's Workforce.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Colden Corporation	Exact match	Blue Bell, PA, United StatesHQ recorded Sep 20, 2026	11-50	52 contacts →
	Exact match “Founded in 1996, Colden Corporation helps clients create and maintain safe and healthy workplaces.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Criterion Labs INC	Exact match	Bensalem Township, PA, United StatesHQ recorded Sep 20, 2026	11-50	47 contacts →
	Exact match “Criterion provides rapid and reliable solutions to occupational and environmental health problems.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Business Health Partners	Exact match	Sulphur, LA, United StatesHQ recorded Sep 20, 2026	51-200	47 contacts →
	Exact match “Business Health Partners has been providing quality occupational health service for business and industry since 1995.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “occupational health monitoring companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 435 occupational health monitoring companies based in the United States

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Occupational health monitoring companies based in the United States at a glance

As of Sep 20, 2026

16.6%Verified-email coverage

32.1Average contacts per company

11-50Median size (employees)

2.3%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

213

11-50

159

51-200

201-500

501-1,000

1,001-5,000

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 435 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 “occupational health monitoring companies” 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 2,323 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 September 20, 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 “occupational health monitoring companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many occupational health monitoring companies are there based in the United States?

RevenueBase identified 435 company matches for occupational health monitoring companies associated with the United States as of September 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?

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

Which city has the most occupational health monitoring companies?

Houston leads with 10 company records, followed by Cincinnati (5) and Dallas (5).

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 2,323 professional contacts with verified work emails tracked across these 435 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 September 20, 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 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.