Company lists · Data refreshed September 2026

Top 25 Occupational health services based in the United States

Name: Occupational health services 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 521 companies tracked

RevenueBase identified 521 occupational health services headquartered in the United States as of September 2026 and tracks 18,052 professional contacts across them, including 3,156 with verified work emails. Indianapolis is the largest hub.

This list covers occupational health services 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 20, 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 20, 2026 86% judged on-target in blind review

521Companies

18,052Contacts tracked

3,156Verified emails

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The 25 largest occupational health services based in the United States

Ranked by team size

Top 25 of 521 occupational health services based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to occupational health services: 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	Concentra	Strong evidence	Addison, TX, United StatesHQ checked Sep 20, 2026	10001+	7,091 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 20, 2026
2	U.S. Healthworks	Indirect evidence	Valencia, CA, United StatesHQ checked Sep 20, 2026	1,001-5,000	535 contacts →
	Indirect evidence “CONCENTRA WELCOMES U.S.” Source: RevenueBase Database · checked Sep 20, 2026
3	Workcare, INC	Strong evidence	Orange, CA, United StatesHQ checked Sep 20, 2026	501-1,000	463 contacts →
	Strong evidence “WorkCare, Inc, a U.S-based occupational health, wellness and absence management company, is part of the APM Group.” Source: RevenueBase Database · checked Sep 20, 2026
4	Briotix Health	Partial evidence	Centennial, CO, United StatesHQ checked Sep 20, 2026	201-500	435 contacts →
	Partial evidence “At Briotix Health, we build relationships with you and your workforce to deliver meaningful results in employee health.” Source: RevenueBase Database · checked Sep 20, 2026
5	Amphibious Medics	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 20, 2026	201-500	385 contacts →
	Indirect evidence “Founded in 2001, Amphibious Medics has a proven history of providing top-tier standby first aid support in the most challenging environments.” Source: RevenueBase Database · checked Sep 20, 2026
6	Progressivehealth	Indirect evidence	Evansville, IN, United StatesHQ checked Sep 20, 2026	1,001-5,000	347 contacts →
	Indirect evidence “For over 20 years, ProgressiveHealth has been a national leader in helping hospitals and medium-to-large employers reduce costs, deliver superior patient care, improve outcomes…” Source: RevenueBase Database · checked Sep 20, 2026
7	Wellness Corporate Solutions, LLC	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 20, 2026	51-200	346 contacts →
	Partial evidence “LabCorp Employer Services (formerly Wellness Corporate Solutions) provides strategic comprehensive well-being solutions and insights that drive population health improvement…” Source: RevenueBase Database · checked Sep 20, 2026
8	Examinetics	Strong evidence	Overland Park, KS, United StatesHQ checked Sep 20, 2026	201-500	274 contacts →
	Strong evidence “Examinetics is the leading provider of occupational health solutions, offering services across the entire employee lifecycle with several delivery methods.” Source: RevenueBase Database · checked Sep 20, 2026
9	Health Fitness Concepts Rn, LLC	Partial evidence	Elmsford, NY, United StatesHQ checked Sep 20, 2026	n/a	259 contacts →
	Partial evidence “Health Fitness Concepts RN, LLC (HFC) provides health screening and lifestyle education programs through its team of health professionals (registered nurses, registered…” Source: RevenueBase Database · checked Sep 20, 2026
10	Axiom Medical	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 20, 2026	201-500	257 contacts →
	Indirect evidence “Welcome to Axiom Medical!” Source: RevenueBase Database · checked Sep 20, 2026
11	Core Occupational Medicine	Strong evidence	Baton Rouge, LA, United StatesHQ checked Sep 20, 2026	201-500	206 contacts →
	Strong evidence “CORE is an industry leader in Occupational Medicine providing a full spectrum of workplace health services across the entire employee lifecycle in an organization.” Source: RevenueBase Database · checked Sep 20, 2026
12	Mobile Health	Strong evidence	Long Island City, United StatesHQ checked Sep 20, 2026	51-200	181 contacts →
	Strong evidence “Since 1984, Mobile Health has been a trusted employee screening and occupational health provider.” Source: RevenueBase Database · checked Sep 20, 2026
13	US Wellness	Partial evidence	Gaithersburg, MD, United StatesHQ checked Sep 20, 2026	n/a	181 contacts →
	Partial evidence “We have a simple idea: to engage individuals in disease prevention so that they may live healthier, be stronger, and achieve more.” Source: RevenueBase Database · checked Sep 20, 2026
14	Careonsite	Strong evidence	Torrance, CA, United StatesHQ checked Sep 20, 2026	201-500	179 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 20, 2026
15	ATI Worksite Solutions	Strong evidence	Indianapolis, IN, United StatesHQ checked Sep 20, 2026	201-500	166 contacts →
	Strong evidence “The Recognized Leader in Injury Prevention and Occupational Medicine for Industry We are a national team of onsite healthcare professionals who specialize in Injury Prevention…” Source: RevenueBase Database · checked Sep 20, 2026
16	Work-Fit	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 20, 2026	51-200	131 contacts →
	Partial evidence “Work-Fit is a leader in preventive healthcare solutions.” Source: RevenueBase Database · checked Sep 20, 2026
17	Prime Occupational Medicine	Strong evidence	Baton Rouge, LA, United StatesHQ checked Sep 20, 2026	51-200	130 contacts →
	Strong evidence “PRIME Occupational Medicine is committed to providing high-quality occupational health services.” Source: RevenueBase Database · checked Sep 20, 2026
18	Agile Occupational Medicine	Indirect evidence	Costa Mesa, CA, United StatesHQ checked Sep 20, 2026	201-500	127 contacts →
	Indirect evidence “The Agile approach focuses on speed – from eliminating unnecessary time in the clinic, to accelerating access to specialists, to driving faster recover.” Source: RevenueBase Database · checked Sep 20, 2026
19	Athletic Training Solutions	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 20, 2026	51-200	124 contacts →
	Partial evidence “Athletic Training Solutions specializes in onsite health and wellness programs for Industrial Athletes.” Source: RevenueBase Database · checked Sep 20, 2026
20	MBI Industrial Medicine	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 20, 2026	201-500	123 contacts →
	Indirect evidence “Founded in 1982, MBI operates 26 clinics across Arizona, Colorado and Nevada.” Source: RevenueBase Database · checked Sep 20, 2026
21	Discovery Health Services	Partial evidence	La Jolla, CA, United StatesHQ checked Sep 20, 2026	201-500	111 contacts →
	Partial evidence “Discovery Health Services offers a new approach to workplace wellness that helps both businesses- and their employees - thrive.” Source: RevenueBase Database · checked Sep 20, 2026
22	Work Health Solutions	Strong evidence	San Jose, CA, United StatesHQ checked Sep 20, 2026	51-200	107 contacts →
	Strong evidence “We’re redefining the occupational health space to deliver better programs and care for all.” Source: RevenueBase Database · checked Sep 20, 2026
23	Proactive Work Health Services	Partial evidence	Sherman Oaks, CA, United StatesHQ checked Sep 20, 2026	51-200	97 contacts →
	Partial evidence “Bringing back the occupational medicine to its original core.” Source: RevenueBase Database · checked Sep 20, 2026
24	ARC Physical Therapy	Partial evidence	Overland Park, KS, United StatesHQ checked Sep 20, 2026	51-200	91 contacts →
	Partial evidence “ARC Physical Therapy+ started as a physical and occupational therapy company and has grown into the region’s foremost wellness, injury prevention, rehabilitation and sports…” Source: RevenueBase Database · checked Sep 20, 2026
25	Occucare International	Strong evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	51-200	88 contacts →
	Strong evidence “Occucare International is a global occupational health service provider founded in 1980.” Source: RevenueBase Database · checked Sep 20, 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: occupational health services. 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 occupational health services.
Partial evidence: Its own public description names part of occupational health services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name occupational health services. 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 521 occupational health services based in the United States

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Occupational health services based in the United States at a glance

As of Sep 20, 2026

17.5%Verified-email coverage

34.6Average contacts per company

11-50Median size (employees)

1.5%Largest-city concentration · Indianapolis

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

240

11-50

178

51-200

201-500

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 521 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 occupational health services, 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 “occupational health services”. 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 occupational health services), 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 occupational health services, 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, 3,156 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 20, 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.

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 occupational health services, 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 occupational health services are there based in the United States?

RevenueBase identified 521 occupational health services 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?

Concentra, headquartered in Addison, tops this list with the largest team on record.

Which city has the most occupational health services?

Indianapolis leads with 8 headquartered companies, followed by Charlotte (7) and Houston (7).

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 3,156 verified decision-maker contacts tracked across these 521 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 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 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.