Company lists · Data refreshed November 2026

Top 25 Oil and gas occupational health services based in Brazil

Name: Oil and gas occupational health services based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 4, 2026 1,683 companies tracked

RevenueBase identified 1,683 company matches for oil and gas occupational health services associated with Brazil as of November 2026 and tracks 19,118 professional contacts across them, including 1,005 with verified work emails. Sao Paulo is the largest hub.

This list covers company matches for oil and gas occupational health services associated with Brazil, 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 November 4, 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 Nov 4, 2026 How this list was built

1,683Companies

19,118Contacts tracked

1,005Verified emails

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The 25 largest oil and gas occupational health services based in Brazil

Ranked by team size

Top 25 of 1,683 company matches for oil and gas occupational health services based in Brazil, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 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	Mantris	Exact match	Sao Paulo, BrazilHQ recorded Nov 4, 2026	10001+	831 contacts →
	Exact match “Somos referência em saúde ocupacional e segurança do trabalho no Brasil, com mais de três décadas de experiência e 900 mil vidas assistidas.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
2	Mednet	Exact match	Americana, BrazilHQ recorded Nov 4, 2026	201-500	671 contacts →
	Exact match “Fundada em 1994 na cidade de Americana-SP, no centro Região Metropolitana de Campinas,o Grupo MEDNET Medicina e Segurança do Trabalho dedica-se à prestação de serviços…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
3	SACS	Exact match	Mogi Das Cruzes, BrazilHQ recorded Nov 4, 2026	501-1,000	326 contacts →
	Exact match “A SACS Construção e Montagem Ltda, foi fundada em Julho de 1994 na cidade de Mogi das Cruzes no estado de São Paulo.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4	Milmed Medicina E Segurança DO Trabalho	Exact match	Vitória, BrazilHQ recorded Nov 4, 2026	51-200	315 contacts →
	Exact match “A MILMED é uma empresa especializada em Medicina e Segurança do Trabalho, que desde 1992 no ano de sua fundação, presta a seus clientes serviços com qualidade e eficiência.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
5	Grupo Mast	Exact match	Sao Paulo, BrazilHQ recorded Nov 4, 2026	501-1,000	279 contacts →
	Exact match “Fundada em 2005, com o intuito de mudar o conceito em prestação de serviços na área de Saúde e Segurança do trabalho, a MASTMED veio para gerar soluções aos nossos clientes e…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
6	Meta Medicina E Segurança DO Trabalho	Exact match	Mogi Das Cruzes, BrazilHQ recorded Nov 4, 2026	51-200	202 contacts →
	Exact match “Empresa prestadora de serviços relacionados a medicina e segurança do trabalho.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
7	Ativa Medicina E Segurança DO Trabalho	Exact match	Porto Alegre, BrazilHQ recorded Nov 4, 2026	51-200	201 contacts →
	Exact match “Somos especialistas em Medicina e Segurança do Trabalho, com presença nacional e soluções completas para a saúde ocupacional da sua empresa.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8	Total Life Assistência À Vida, Ltda	Exact match	São José, BrazilHQ recorded Nov 4, 2026	51-200	197 contacts →
	Exact match “Com vasta experiência no mercado de medicina ocupacional, apresentamos aos nossos clientes um conjunto de soluções voltadas para a melhoria da condição de saúde do trabalhador.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9	CLM Medicina DO Trabalho E Saúde Ocupacional	Exact match	São Paulo, BrazilHQ recorded Nov 4, 2026	201-500	167 contacts →
	Exact match “A CLM é uma empresa prestadora de serviços e soluções na área de gestão em saúde e segurança no trabalho.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10	Focus Solutions	Exact match	Macaé, BrazilHQ recorded Nov 4, 2026	51-200	163 contacts →
	Exact match “Especializada nos setores industriais de alta complexidade, como Offshore, Óleo & Gás e Navegação, a Focus Solutions atua há mais de 20 anos com experiência e expertise em…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11	Grupo Atenta Saúde	Exact match	Belo Horizonte, BrazilHQ recorded Nov 4, 2026	11-50	111 contacts →
	Exact match “Grupo Atenta Saúde Empresa sediada em Belo Horizonte - MG especializada na prestação de serviços de Medicina e Segurança do Trabalho para empresas de diversos ramos da indústria…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
12	Cred MHS	Exact match	Belo Horizonte, BrazilHQ recorded Nov 4, 2026	51-200	111 contacts →
	Exact match “We have been operating nationally for over 30 years in the occupational health and safety management segment with a culture characterized by proactivity and proximity to our…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
13	Dual Saúde Integrada	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 4, 2026	201-500	107 contacts →
	Exact match “Somos uma empresa moderna que surgiu para assessorar os seus clientes com soluções em medicina e segurança do trabalho.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14	International Health Care	Exact match	Rio De Janeiro, BrazilHQ recorded Nov 4, 2026	51-200	107 contacts →
	Exact match “International Health Care maintains an updated network of assistance resources, supporting and protecting the entire workforce of over 60 clients in the event of any medical…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
15	RED Flag Gestão Ocupacional	Exact match	Macaé, BrazilHQ recorded Nov 4, 2026	11-50	103 contacts →
	Exact match “A RED FLAG é uma empresa especializada em Gestão Ocupacional, com ênfase em Saúde e Segurança do Trabalho, além de Emergência, Resgate, Medicina Hiperbárica, e Alocação de…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16	GV Clínicas Medicina DO Trabalho	Exact match	Governador Valadares, BrazilHQ recorded Nov 4, 2026	51-200	92 contacts →
	Exact match “Desde 1977 que o Grupo GV CLÍNICAS atua na prestação de serviço na área médica, inicialmente com um Plano de Saúde em Governador Valadares.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17	Cliomed Occupational Medicine	Exact match	Itajaí, BrazilHQ recorded Nov 4, 2026	51-200	85 contacts →
	Exact match “Occupational Medicine” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18	Engemed Saúde Ocupacional	Exact match	São Paulo, BrazilHQ recorded Nov 4, 2026	51-200	81 contacts →
	Exact match “Com sede em São Paulo, o Grupo ENGEMED é líder em Saúde Ocupacional, Engenharia e Segurança no Trabalho.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19	Inmestra	Exact match	Piracicaba, BrazilHQ recorded Nov 4, 2026	51-200	80 contacts →
	Exact match “A InMestra Solução Ocupacional é especializada em saúde ocupacional, oferecendo serviços relacionados à medicina e segurança do trabalho, com a missão de construir um mundo com…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20	ENSEG	Exact match	Lajeado, BrazilHQ recorded Nov 4, 2026	11-50	70 contacts →
	Exact match “Enseg -Engenharia de Segurança do Trabalho Ltda.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
21	Centro DE Medicina Humana	Exact match	Camaçari, BrazilHQ recorded Nov 4, 2026	201-500	70 contacts →
	Exact match “Maior empresa no ramo de saúde ocupacional do norte nordeste com mais de 25 anos de fundada.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
22	Servmed Clinica DE Medicina DO Trabalho	Exact match	Blumenau, BrazilHQ recorded Nov 4, 2026	11-50	67 contacts →
	Exact match “Medicina Ocupacional.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
23	Quality SEG Medicina E Segurança DO Trabalho	Exact match	Lençóis Paulista, BrazilHQ recorded Nov 4, 2026	51-200	67 contacts →
	Exact match “A QualitySeg, com mais de 18 anos de experiência no mercado, orientando seus clientes na Implantação e Gestão das Normas Regulamentadoras relativas à Saúde e as Condições de…” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
24	Esame Medicina DO Trabalho	Exact match	Sao Paulo, BrazilHQ recorded Nov 4, 2026	51-200	66 contacts →
	Exact match “Proteger pessoas é o que fazemos.” Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
25	AMO	Exact match	Uberaba, BrazilHQ recorded Nov 4, 2026	51-200	63 contacts →
	Exact match “A AMO é a maior e mais completa empresa especializada em assessoria nas áreas de medicina ocupacional, engenharia de segurança do trabalho e meio ambiente, ergonomia e…” Recorded in the RevenueBase company graph · Nov 4, 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 “oil and gas occupational health services”. 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 1,683 oil and gas occupational health services based in Brazil

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Oil and gas occupational health services based in Brazil at a glance

As of Nov 4, 2026

5.3%Verified-email coverage

11.4Average contacts per company

11-50Median size (employees)

13.6%Largest-city concentration · Sao Paulo

Nov 4, 2026Page data refreshed

Companies by employee count

1-10

817

11-50

661

51-200

155

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 Brazil, so it is reported there. Company counts and contact totals on this page are exact for Brazil, over 1,683 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 Brazil whose business descriptions match “oil and gas occupational health 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 1,005 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 November 4, 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.

Oil and gas occupational health services by metro

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 “oil and gas occupational health services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas occupational health services are there based in Brazil?

RevenueBase identified 1,683 company matches for oil and gas occupational health services associated with Brazil as of November 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?

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

Which city has the most oil and gas occupational health services?

Sao Paulo leads with 229 company records, followed by Rio De Janeiro (68) and Curitiba (50).

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 1,005 professional contacts with verified work emails tracked across these 1,683 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 November 4, 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.