Company lists · Data refreshed September 2026
Top 25 Occupational health services companies based in the United States
RevenueBase identified 841 occupational health services companies headquartered in the United States as of September 2026 and tracks 25,170 professional contacts across them, including 4,456 with verified work emails. Houston is the largest hub.
This list covers occupational health services 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.
The 25 largest occupational health services companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,691 contacts → | ||||
Partial evidence “Leidos QTC Health Services collaborates closely with government and non-government customers to address current and future program needs within the health services domain.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 3 | 895 contacts → | ||||
Indirect evidence “At NextCare, we believe exceptional care starts with exceptional people.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 4 | 554 contacts → | ||||
Partial evidence “Ramp Health is a leading provider of clinical, wellbeing, and safety solutions.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 5 | 535 contacts → | ||||
Indirect evidence “CONCENTRA WELCOMES U.S.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 13 | 257 contacts → | ||||
Indirect evidence “Welcome to Axiom Medical!” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 15 | 181 contacts → | ||||
Strong evidence “Since 1984, Mobile Health has been a trusted employee screening and occupational health provider.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 18 | 172 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 20 | 131 contacts → | ||||
Partial evidence “Work-Fit is a leader in preventive healthcare solutions.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 21 | 130 contacts → | ||||
Partial evidence “We are a successful environment health and safety staffing/staff augmentation and consulting firm with services available worldwide.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 22 | 130 contacts → | ||||
Strong evidence “PRIME Occupational Medicine is committed to providing high-quality occupational health services.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 15, 2026Thanks. The Data Team will review it. | |||||
| 24 | 124 contacts → | ||||
Partial evidence “Athletic Training Solutions specializes in onsite health and wellness programs for Industrial Athletes.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
| 25 | 123 contacts → | ||||
Indirect evidence “Founded in 1982, MBI operates 26 clinics across Arizona, Colorado and Nevada.” Source: RevenueBase Database · checked Sep 15, 2026Thanks. The Data Team will review it. | |||||
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 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 occupational health services companies.
- Partial evidence
- Its own public description names part of occupational health services companies, 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 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 841 occupational health services companies based in the United States
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Occupational health services companies based in the United States at a glance
As of Sep 15, 2026Companies by employee count
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 841 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 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 “occupational health services 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 occupational health services 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 occupational health services 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, 4,456 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.
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 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 occupational health services companies are there based in the United States?
RevenueBase identified 841 occupational health services 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?
Concentra, headquartered in Addison, tops this list with the largest team on record.
Which city has the most occupational health services companies?
Houston leads with 17 headquartered companies, followed by Denver (10) and Charlotte (9).
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 4,456 verified decision-maker contacts tracked across these 841 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.
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- Occupational health services companies based in Belo Horizonte, Brazil
- Occupational health services companies based in Rio De Janeiro, Brazil
- Occupational health services companies based in Sao Paulo, Brazil
- Occupational health services companies based in Cape Town, South Africa
- Occupational health services companies based in Argentina
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