Company lists · Data refreshed September 2026

Top 25 Occupational medicine clinics based in the United States

RevenueBase identified 1,022 occupational medicine clinics headquartered in the United States as of September 2026 and tracks 35,949 professional contacts across them, including 7,051 with verified work emails. Houston is the largest hub.

This list covers occupational medicine clinics 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
1,022Companies
35,949Contacts tracked
7,051Verified emails
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The 25 largest occupational medicine clinics based in the United States

Ranked by team size
Top 25 of 1,022 occupational medicine clinics 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 medicine clinics: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceAddison, TX, United StatesHQ checked Sep 20, 202610001+7,091 contacts →

Partial 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
2Indirect evidenceGlendora, CA, United StatesHQ checked Sep 20, 20261,001-5,0001,691 contacts →

Indirect 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 20, 2026
3Indirect evidenceJacksonville, FL, United StatesHQ checked Sep 20, 20261,001-5,0001,471 contacts →

Indirect evidence

“One Call is redefining the Workers’ Compensation ecosystem by unifying ancillary care through one trusted, technology-enabled partner.”

Source: RevenueBase Database · checked Sep 20, 2026
4Indirect evidenceJersey City, NJ, United StatesHQ checked Sep 20, 20265,001-10,0001,192 contacts →

Indirect evidence

“At York, we believe that behind every person is a unique story.”

Source: RevenueBase Database · checked Sep 20, 2026
5Partial evidenceHarvey, IL, United StatesHQ checked Sep 20, 2026n/a1,024 contacts →

Partial evidence

“For nearly a century we have pioneered sophisticated clinical care and developed the area's most convenient network of comprehensive outpatient centers, all dedicated to improve…”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceTempe, AZ, United StatesHQ checked Sep 20, 20261,001-5,000895 contacts →

Indirect evidence

“At NextCare, we believe exceptional care starts with exceptional people.”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceDenver, CO, United StatesHQ checked Sep 20, 2026501-1,000729 contacts →

Indirect evidence

“Pinnacol Assurance is a top-performing provider of workers’ compensation insurance.”

Source: RevenueBase Database · checked Sep 20, 2026
8Partial evidenceBlue Bell, PA, United StatesHQ checked Sep 20, 2026201-500554 contacts →

Partial evidence

“Ramp Health is a leading provider of clinical, wellbeing, and safety solutions.”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceValencia, CA, United StatesHQ checked Sep 20, 20261,001-5,000535 contacts →

Indirect evidence

“CONCENTRA WELCOMES U.S.”

Source: RevenueBase Database · checked Sep 20, 2026
10Partial evidenceOrange, CA, United StatesHQ checked Sep 20, 2026501-1,000463 contacts →

Partial 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
11Indirect evidenceCape Canaveral, FL, United StatesHQ checked Sep 20, 2026501-1,000450 contacts →

Indirect evidence

“Founded in 1975, Comprehensive Health Services, Inc.”

Source: RevenueBase Database · checked Sep 20, 2026
12Indirect evidenceCentennial, CO, United StatesHQ checked Sep 20, 2026201-500435 contacts →

Indirect 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
13Indirect evidenceOrlando, FL, United StatesHQ checked Sep 20, 2026201-500385 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
14Partial evidenceRosemont, IL, United StatesHQ checked Sep 20, 2026501-1,000351 contacts →

Partial evidence

“Physicians Immediate Care, also known as Physicians Urgent Care, is a Midwest leader in urgent care and occupational health services.”

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceEvansville, IN, United StatesHQ checked Sep 20, 20261,001-5,000347 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
16Indirect evidenceBethesda, MD, United StatesHQ checked Sep 20, 202651-200346 contacts →

Indirect 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
17Indirect evidenceOlathe, KS, United StatesHQ checked Sep 20, 202610001+315 contacts →

Indirect evidence

“UPDATE: On October 10, 2018, the assets of Provant Health were acquired by Quest Diagnostics, Incorporated.”

Source: RevenueBase Database · checked Sep 20, 2026
18Partial evidenceOverland Park, KS, United StatesHQ checked Sep 20, 2026201-500274 contacts →

Partial 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
19Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202651-200270 contacts →

Indirect evidence

“EHE is America’s leading prevention company.”

Source: RevenueBase Database · checked Sep 20, 2026
20Indirect evidenceThe Woodlands, TX, United StatesHQ checked Sep 20, 2026201-500257 contacts →

Indirect evidence

“Welcome to Axiom Medical!”

Source: RevenueBase Database · checked Sep 20, 2026
21Indirect evidenceSan Antonio, TX, United StatesHQ checked Sep 20, 2026201-500235 contacts →

Indirect evidence

“Texas MedClinic Urgent Care is now CareNow Urgent Care/HCA Healthcare.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceSan Antonio, TX, United StatesHQ checked Sep 20, 202651-200218 contacts →

Indirect evidence

“Fit For Work™ is an Injury Prevention firm that partners with large companies to deliver a 50% reduction in injuries so they can focus on their business.”

Source: RevenueBase Database · checked Sep 20, 2026
23Strong evidenceBaton Rouge, LA, United StatesHQ checked Sep 20, 2026201-500206 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
24Partial evidenceLa Mirada, CA, United StatesHQ checked Sep 20, 2026201-500194 contacts →

Partial evidence

“We are a multidisciplinary healthcare organization offering a full range of occupational medical services in practice locations throughout Southern California (Los Angeles…”

Source: RevenueBase Database · checked Sep 20, 2026
25Partial evidenceLong Island City, United StatesHQ checked Sep 20, 202651-200181 contacts →

Partial evidence

“Since 1984, Mobile Health has been a trusted employee screening and occupational health provider.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 1,022 occupational medicine clinics based in the United States

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Occupational medicine clinics based in the United States at a glance

As of Sep 20, 2026
19.6%Verified-email coverage
35.2Average contacts per company
11-50Median size (employees)
2.2%Largest-city concentration · Houston
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
423
11-50
380
51-200
148
201-500
37
501-1,000
11
1,001-5,000
12
5,001-10,000
2
10001+
6

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 1,022 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 medicine clinics, 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 medicine clinics”. 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 medicine clinics), 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 medicine clinics, 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, 7,051 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 medicine clinics, 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 medicine clinics are there based in the United States?

RevenueBase identified 1,022 occupational medicine clinics 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 medicine clinics?

Houston leads with 22 headquartered companies, followed by New York (13) and Chicago (12).

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 7,051 verified decision-maker contacts tracked across these 1,022 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.