Company lists · Data refreshed September 2026

Top 25 Healthcare security companies worldwide

RevenueBase identified 3,169 healthcare security companies worldwide as of September 2026 and tracks 138,138 professional contacts across them, including 16,345 with verified work emails and 30,368 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers healthcare security companies worldwide, 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 3, 2026. Country and city lists for healthcare security companies follow the table.

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 3, 2026 86% judged on-target in blind review
3,169Companies
138,138Contacts tracked
16,345Verified emails
30,368Mobile numbers
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The 25 largest healthcare security companies worldwide

Ranked by team size
Top 25 of 3,169 healthcare security companies worldwide, ranked by team size, largest first. Data refreshed Sep 3, 2026. RevenueBase Smart Search rates how each company's information relates to healthcare security companies: 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 evidenceIrvine, IL, United StatesHQ checked Sep 3, 202610001+62,715 contacts →

Partial evidence

“Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…”

Source: RevenueBase Database · checked Sep 3, 2026
2Partial evidenceIssy-les-moulineaux, FranceHQ checked Sep 3, 202610001+3,884 contacts →

Partial evidence

“Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.”

Source: RevenueBase Database · checked Sep 3, 2026
3Partial evidenceToronto, ON, CanadaHQ checked Sep 3, 20261,001-5,0002,350 contacts →

Partial evidence

“Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.”

Source: RevenueBase Database · checked Sep 3, 2026
4Indirect evidenceSao Paulo, BrazilHQ checked Sep 3, 20265,001-10,0002,152 contacts →

Indirect evidence

“Com mais de 8 mil colaboradores, presente em 11 estados, vencedora do Prêmio Valor Carreira por sete vezes consecutivas, certificada pela GPTW e única empresa brasileira membro do…”

Source: RevenueBase Database · checked Sep 3, 2026
5Indirect evidenceNorth York, ON, CanadaHQ checked Sep 3, 20265,001-10,0001,630 contacts →

Indirect evidence

“Over 90 years of protecting the things that matter, we’ve seen more than most.”

Source: RevenueBase Database · checked Sep 3, 2026
6Indirect evidenceSao Paulo, BrazilHQ checked Sep 3, 20265,001-10,0001,356 contacts →

Indirect evidence

“O Grupo Comando G8 é referência nacional na implantação e operação de soluções integradas em segurança e serviços.”

Source: RevenueBase Database · checked Sep 3, 2026
7Partial evidenceDothan, AL, United StatesHQ checked Sep 3, 20261,001-5,0001,186 contacts →

Partial evidence

“DSI Security Services offers armed and unarmed uniformed security guard services.”

Source: RevenueBase Database · checked Sep 3, 2026
8Partial evidenceParsippany, CA, United StatesHQ checked Sep 3, 202610001+1,148 contacts →

Partial evidence

“SOS Security is a known innovator and leader in the security and protective services industry.”

Source: RevenueBase Database · checked Sep 3, 2026
9Partial evidenceChicago, IL, United StatesHQ checked Sep 3, 20261,001-5,0001,133 contacts →

Partial evidence

“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.”

Source: RevenueBase Database · checked Sep 3, 2026
10Partial evidenceHerndon, VA, United StatesHQ checked Sep 3, 202610001+1,113 contacts →

Partial evidence

“Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…”

Source: RevenueBase Database · checked Sep 3, 2026
11Indirect evidencePittsburgh, TX, United StatesHQ checked Sep 3, 20265,001-10,0001,057 contacts →

Indirect evidence

“Founded in 1982, St.”

Source: RevenueBase Database · checked Sep 3, 2026
12Indirect evidenceFranceHQ checked Sep 3, 202610001+1,008 contacts →

Indirect evidence

“La proposition de valeur d'Onet dans la sécurité se fonde sur - son expertise sécurité et sa capacité à analyser les besoins et risques propres à ses clients- sa parfaite maîtrise…”

Source: RevenueBase Database · checked Sep 3, 2026
13Partial evidenceWest Palm Beach, NC, United StatesHQ checked Sep 3, 2026501-1,000850 contacts →

Partial evidence

“Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.”

Source: RevenueBase Database · checked Sep 3, 2026
14Partial evidenceWestwood, MA, United StatesHQ checked Sep 3, 20261,001-5,000744 contacts →

Partial evidence

“Improving Security.”

Source: RevenueBase Database · checked Sep 3, 2026
15Indirect evidenceAlmería, SpainHQ checked Sep 3, 20261,001-5,000683 contacts →

Indirect evidence

“Grupo Control es una empresa especializada en ofrecer soluciones integrales de seguridad y vigilancia por lo que es una empresa homologada y certificada, con exigentes controles…”

Source: RevenueBase Database · checked Sep 3, 2026
16Indirect evidenceBuford, ON, United StatesHQ checked Sep 3, 2026201-500525 contacts →

Indirect evidence

“Since 1987, Tech Systems, Inc.”

Source: RevenueBase Database · checked Sep 3, 2026
17Partial evidenceWest Ryde, AustraliaHQ checked Sep 3, 20261,001-5,000508 contacts →

Partial evidence

“Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.”

Source: RevenueBase Database · checked Sep 3, 2026
18Partial evidenceSt. Paul, NE, United StatesHQ checked Sep 3, 20261,001-5,000404 contacts →

Partial evidence

“American Security & Investigations has provided security and investigative services throughout the upper midwest since 1959.”

Source: RevenueBase Database · checked Sep 3, 2026
19Indirect evidenceSan Diego, FL, United StatesHQ checked Sep 3, 20265,001-10,000375 contacts →

Indirect evidence

“Elite staffs events and facilities with professionals who create a safe and secure environment.”

Source: RevenueBase Database · checked Sep 3, 2026
20Partial evidenceFort Lauderdale, FL, United StatesHQ checked Sep 3, 20261,001-5,000343 contacts →

Partial evidence

“Cambridge Security Services is a private security company that has been in business for more than 30 years.”

Source: RevenueBase Database · checked Sep 3, 2026
21Indirect evidenceSan Fernando De Henares, SpainHQ checked Sep 3, 20261,001-5,000343 contacts →

Indirect evidence

“Clece Seguridad nace con el objetivo de prestar soluciones integrales de protección y seguridad a personas, empresas e instituciones bajo un concepto de seguridad integral…”

Source: RevenueBase Database · checked Sep 3, 2026
22Partial evidenceHamilton, New ZealandHQ checked Sep 3, 2026501-1,000338 contacts →

Partial evidence

“Gallagher Security is a global leader in integrated technology solutions that help organizations around the world protect, secure, and manage people and assets.”

Source: RevenueBase Database · checked Sep 3, 2026
23Partial evidenceDubai, United Arab EmiratesHQ checked Sep 3, 20261,001-5,000329 contacts →

Partial evidence

“Star Security Services have been providing industry-recognised and ISO-accredited professional security services with the highest level of assurance, best practices, and…”

Source: RevenueBase Database · checked Sep 3, 2026
24Partial evidenceBraintree, United KingdomHQ checked Sep 3, 20261,001-5,000325 contacts →

Partial evidence

“Established in 1993, with commitment to our customers and staff alongside a strong ethos and standards driven approach, Regency Security is now the largest provider of door…”

Source: RevenueBase Database · checked Sep 3, 2026
25Partial evidenceRaleigh, VA, United StatesHQ checked Sep 3, 20261,001-5,000322 contacts →

Partial evidence

“United American Security was formed in 2010 to bring excellent regional security companies together.”

Source: RevenueBase Database · checked Sep 3, 2026

Showing 25 of 3,169 healthcare security companies worldwide

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Healthcare security companies worldwide at a glance

As of Sep 3, 2026
11.8%Verified-email coverage
22.0%Mobile-number coverage
43.6Average contacts per company
11-50Median size (employees)
1.7%Largest-city concentration · London
Sep 3, 2026Page data refreshed

Companies by employee count

1-10
1,073
11-50
1,159
51-200
545
201-500
179
501-1,000
75
1,001-5,000
72
5,001-10,000
14
10001+
14

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 healthcare security 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.
Coverage
16 countries, largest first: the United States, the United Kingdom, France, Canada, Brazil, the Netherlands, Australia, India, Germany, Italy and 6 more. Country and city lists for healthcare security companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “healthcare security 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 healthcare security 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 healthcare security companies, and records with no verified work email.
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, 16,345 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 between September 3, 2026 and September 14, 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.

Healthcare security companies by location

19 lists · largest first

Every Healthcare security companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 healthcare security 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 healthcare security companies are there worldwide?

RevenueBase identified 3,169 healthcare security companies worldwide 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?

Allied Universal, headquartered in Rosemont, tops this list with the largest team on record.

Which country has the most healthcare security companies?

The United States leads with 1,189 companies, followed by the United Kingdom (304) and France (251). Every healthcare security companies list by country and city is linked on this page.

Which city has the most healthcare security companies?

London leads with 54 headquartered companies, followed by Sao Paulo (40) and Los Angeles (37).

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 16,345 verified decision-maker contacts tracked across these 3,169 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled from the company graph between September 3, 2026 and September 14, 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.