Company lists · Data refreshed September 2026
Top 25 Hospital security companies worldwide
RevenueBase identified 1,700 hospital security companies worldwide as of September 2026 and tracks 35,460 professional contacts across them, including 2,473 with verified work emails. The United States is the largest market and Los Angeles the largest hub.
This list covers hospital 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 28, 2026. Country and city lists for hospital 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.
The 25 largest hospital security companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,038 contacts → | ||||
Partial evidence “Excelsior Defense is a security and investigations company based out of St.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,365 contacts → | ||||
Partial evidence “Founded in 1976, Paragon Security is Ontario’s largest privately owned security company.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,118 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 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,062 contacts → | ||||
Indirect evidence “Founded in 1982, St.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 519 contacts → | ||||
Partial evidence “Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 497 contacts → | ||||
Indirect evidence “GRUPO IMPACTO ( Desde 1993 ) Tudo começa com uma boa dose de talento natural, somado às responsabilidades que você assume a cada trabalho e a atenção dedicada aos menores detalhes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 376 contacts → | ||||
Indirect evidence “Elite staffs events and facilities with professionals who create a safe and secure environment.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 346 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 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 326 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 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 321 contacts → | ||||
Indirect evidence “A empresa oferece profissionais qualificados para diversas funções, entre elas, portaria e/ou controlador de acesso, auxiliar de serviços gerais, zeladoria, atendente, auxiliar…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 320 contacts → | ||||
Partial evidence “United American Security was formed in 2010 to bring excellent regional security companies together.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 275 contacts → | ||||
Partial evidence “Welcome to Doyle Security Services (DSS) where a team of responsive security professionals stands ready to meet your needs in this ever-changing business environment.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 208 contacts → | ||||
Partial evidence “Central Defense Security officers protect the human, intellectual and physical assets of our customers and their visitors.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 206 contacts → | ||||
Partial evidence “An industry leader in managed access control security solutions and services since 1981, Datawatch Systems is trusted by building owners, property managers, and tenants across the…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 203 contacts → | ||||
Indirect evidence “Depuis 1996, PmSm, société du groupe MEDIPRO, s’impose comme le partenaire stratégique des organisations dans la protection de leur capital le plus précieux : l’humain.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 200 contacts → | ||||
Partial evidence “Providing Security and Housekeeping Staff” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 199 contacts → | ||||
Partial evidence “We are a privately owned California security services provider who is committed to excellence in service in every aspect of our business.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 190 contacts → | ||||
Partial evidence “Covenant Security Services is a premier national provider of security services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 170 contacts → | ||||
Partial evidence “Since 1981, Teachout Security Solutions has become well-known as industry-leading uniformed security services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 165 contacts → | ||||
Partial evidence “Security Guard and Technology Services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 164 contacts → | ||||
Indirect evidence “CITIUS es una empresa de seguridad completamente objetiva y profesional, velando con prioridad absoluta por los intereses de todos y cada uno de sus clientes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 156 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 143 contacts → | ||||
Partial evidence “Privately owned and operated, American Security has grown from an entrepreneurial start-up in 1975 to become one of the largest Southeastern-based security firms with over 3,500…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 142 contacts → | ||||
Indirect evidence “At Kellington Protection Service “KPS”, we understand what is necessary to handle the new challenges and responsibilities constantly evolving in commercial and residential…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 142 contacts → | ||||
Partial evidence “Phoenix Protective Corporation delivers proactive security solutions with highly trained, experienced security officers and outstanding customer protection.” Source: RevenueBase Database · checked Sep 28, 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: hospital security 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 hospital security companies.
- Partial evidence
- Its own public description names part of hospital security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name hospital security 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 1,700 hospital security companies worldwide
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Hospital security companies worldwide at a glance
As of Sep 28, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 hospital 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
- Every country. Country and city lists for hospital security companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “hospital 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 hospital 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 hospital 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, 2,473 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 28, 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.
Hospital security companies by location
8 lists · largest firstEvery Hospital security companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Hospital security companies based in the United States614
- Hospital security companies based in the United Kingdom114
- Hospital security companies based in India102
- Hospital security companies based in the Netherlands95
- Hospital security companies based in Canada84
- Hospital security companies based in Brazil63
- Hospital security companies based in France50
- Hospital security companies based in Australia42
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 hospital 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 hospital security companies are there worldwide?
RevenueBase identified 1,700 hospital 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?
Unemployed, headquartered in St. Petersburg, tops this list with the largest team on record.
Which country has the most hospital security companies?
The United States leads with 614 companies, followed by the United Kingdom (114) and India (102). Every hospital security companies list by country and city is linked on this page.
Which city has the most hospital security companies?
Los Angeles leads with 25 headquartered companies, followed by London (20) and New York (18).
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 2,473 verified decision-maker contacts tracked across these 1,700 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 28, 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.