Company lists · Data refreshed September 2026
Top 25 Healthcare facility security services based in the United States
RevenueBase identified 558 company matches for healthcare facility security services associated with the United States as of September 2026 and tracks 19,418 professional contacts across them, including 1,579 with verified work emails. Los Angeles is the largest hub.
This list covers company matches for healthcare facility security services associated with the United States, 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 September 28, 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.
The 25 largest healthcare facility security services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,038 contacts → | ||||
Exact match “Excelsior Defense is a security and investigations company based out of St.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 2 | 1,375 contacts → | ||||
Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 3 | 1,151 contacts → | ||||
Exact match “SOS Security is a known innovator and leader in the security and protective services industry.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 4 | 1,138 contacts → | ||||
Exact match “At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 5 | 1,062 contacts → | ||||
Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 6 | 519 contacts → | ||||
Exact match “Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 7 | 417 contacts → | ||||
Exact match “At Kent, we’re able to pull from an unequaled pool of business and security products and services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 8 | 376 contacts → | ||||
Exact match “Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 9 | 346 contacts → | ||||
Exact match “Cambridge Security Services is a private security company that has been in business for more than 30 years.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 10 | 275 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 11 | 208 contacts → | ||||
Exact match “Central Defense Security officers protect the human, intellectual and physical assets of our customers and their visitors.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 12 | 206 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 13 | 199 contacts → | ||||
Exact match “We are a privately owned California security services provider who is committed to excellence in service in every aspect of our business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 14 | 165 contacts → | ||||
Exact match “Security Guard and Technology Services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 15 | 156 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 16 | 155 contacts → | ||||
Exact match “Blackstone Security Services is proud to offer a wide variety of security services tailored to satisfy specific client needs.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 17 | 143 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 18 | 142 contacts → | ||||
Exact match “At Kellington Protection Service “KPS”, we understand what is necessary to handle the new challenges and responsibilities constantly evolving in commercial and residential…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 19 | 142 contacts → | ||||
Exact match “Phoenix Protective Corporation delivers proactive security solutions with highly trained, experienced security officers and outstanding customer protection.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 20 | 136 contacts → | ||||
Exact match “Founded in 1979, Lofton Security is the largest locally-owned, independent security and staffing company in the southern region.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 21 | 126 contacts → | ||||
Exact match “Security One, Inc.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 22 | 118 contacts → | ||||
Exact match “MPS Security, a division of National Business Investigations, Inc.(NBI), is a full-service security firm providing Executive Protection and Residential Security Team protection.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 23 | 112 contacts → | ||||
Exact match “Brantley Security provides quality security services through quick response, experienced management and an unmatched attention to detail.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 24 | 103 contacts → | ||||
Exact match “Headquartered in suburban Philadelphia, UAS is a national provider of integrated security services protecting over $15 billion in commercial assets for a wide variety of clients…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase | |||||
| 25 | 101 contacts → | ||||
Exact match “Guard-Systems, Inc (GSI) has been delivering on our promises since 1956 As a result of this simple philosophy, we have grown to become one of the largest privately held contract…” Recorded in the RevenueBase company graph · Sep 28, 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 “healthcare facility security 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 558 healthcare facility security services based in the United States
See the full list, filter by size, metro and specialty, and access 1,579 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Healthcare facility security services based in the United States at a glance
As of Sep 28, 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 558 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 the United States whose business descriptions match “healthcare facility security 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 1,579 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 September 28, 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.
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 “healthcare facility security services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many healthcare facility security services are there based in the United States?
RevenueBase identified 558 company matches for healthcare facility security services associated with the United States as of September 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?
Unemployed tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most healthcare facility security services?
Los Angeles leads with 27 company records, followed by New York (18) and Miami (14).
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 1,579 professional contacts with verified work emails tracked across these 558 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 September 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 558 healthcare facility security services based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Healthcare facility security services by geography
- Healthcare facility security services based in London, United Kingdom
- Healthcare facility security services based in Australia
- Healthcare facility security services based in Brazil
- Healthcare facility security services based in Canada
- Healthcare facility security services based in France
- Healthcare facility security services based in Germany
- Healthcare facility security services based in India
- Healthcare facility security services based in the Netherlands
- Healthcare facility security services based in the United Kingdom
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Healthcare facility security services based in London, United Kingdom
- Healthcare facility security services based in Australia
- Healthcare facility security services based in Brazil
- Healthcare facility security services based in Canada
- Healthcare facility security services based in France
- Healthcare facility security services based in Germany
Company intelligence · public preview
Top 25 healthcare facility security services based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 558 matching company records for healthcare facility security services based in the United States, with 19,418 tracked contacts and 1,579 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 healthcare facility security services based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Unemployedexcelsiordefense.com HQ: St. Petersburg, FL, United StatesReported employees: Not recorded | St. Petersburg, FL, United States | Not recorded | Exact match | 4,038 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Guardsmarkguardsmark.comHQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,375 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  SOS Security LLCsossecurity.comHQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 1,151 contacts → |
“SOS Security is a known innovator and leader in the security and protective services industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Titan Security Grouptitan-security.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,138 contacts → |
“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  St. Moritz Security Services, INCsmssi.comHQ: Pittsburgh, PA, United StatesReported employees: 5,001-10,000 | Pittsburgh, PA, United States | 5,001-10,000 | Exact match | 1,062 contacts → |
“Founded in 1982, St.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Mulligan Securitymulligansecurity.comHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 519 contacts → |
“Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Kent Serviceskentservices.comHQ: North Miami Beach, FL, United StatesReported employees: 1,001-5,000 | North Miami Beach, FL, United States | 1,001-5,000 | Exact match | 417 contacts → |
“At Kent, we’re able to pull from an unequaled pool of business and security products and services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Elite Security & Staffingelitesecuritystaffing.comHQ: San Diego, CA, United StatesReported employees: 5,001-10,000 | San Diego, CA, United States | 5,001-10,000 | Exact match | 376 contacts → |
“Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cambridge Security Services Corpcambridgesecurityservices.comHQ: Fort Lauderdale, FL, United StatesReported employees: 1,001-5,000 | Fort Lauderdale, FL, United States | 1,001-5,000 | Exact match | 346 contacts → |
“Cambridge Security Services is a private security company that has been in business for more than 30 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Doyle Security Services, Inc. DSSdoylesecurityservices.comHQ: Rockville Centre, NY, United StatesReported employees: 1,001-5,000 | Rockville Centre, NY, United States | 1,001-5,000 | Exact match | 275 contacts → |
“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.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Central Defense Security, LLCcentdef.com HQ: N. Little Rock, AR, United StatesReported employees: 501-1,000 | N. Little Rock, AR, United States | 501-1,000 | Exact match | 208 contacts → |
“Central Defense Security officers protect the human, intellectual and physical assets of our customers and their visitors.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Datawatch Systemsdatawatchsystems.comHQ: Bethesda, MD, United StatesReported employees: 201-500 | Bethesda, MD, United States | 201-500 | Exact match | 206 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Pacwest Security Servicespacwestsecurity.comHQ: Costa Mesa, CA, United StatesReported employees: 501-1,000 | Costa Mesa, CA, United States | 501-1,000 | Exact match | 199 contacts → |
“We are a privately owned California security services provider who is committed to excellence in service in every aspect of our business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Aegis Protective Servicesaegis-ps.comHQ: Cincinnati, OH, United StatesReported employees: 201-500 | Cincinnati, OH, United States | 201-500 | Exact match | 165 contacts → |
“Security Guard and Technology Services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  OLD Accountipsc.bizHQ: Hammond, LA, United StatesReported employees: Not recorded | Hammond, LA, United States | Not recorded | Exact match | 156 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 |  Blackstone Security Services, INCblackstonesecurity.comHQ: Phoenix, AZ, United StatesReported employees: 501-1,000 | Phoenix, AZ, United States | 501-1,000 | Exact match | 155 contacts → |
“Blackstone Security Services is proud to offer a wide variety of security services tailored to satisfy specific client needs.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  American Securitytrustamericansecurity.comHQ: Greenville, SC, United StatesReported employees: 1,001-5,000 | Greenville, SC, United States | 1,001-5,000 | Exact match | 143 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Kellington Protection Service, LLCkellingtonprotection.comHQ: Pittsburgh, PA, United StatesReported employees: 201-500 | Pittsburgh, PA, United States | 201-500 | Exact match | 142 contacts → |
“At Kellington Protection Service “KPS”, we understand what is necessary to handle the new challenges and responsibilities constantly evolving in commercial and residential…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Phoenix Protective Corpphoenixprotectivecorp.comHQ: Spokane Valley, WA, United StatesReported employees: 501-1,000 | Spokane Valley, WA, United States | 501-1,000 | Exact match | 142 contacts → |
“Phoenix Protective Corporation delivers proactive security solutions with highly trained, experienced security officers and outstanding customer protection.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Lofton Security Servicelofton.jobsHQ: Baton Rouge, LA, United StatesReported employees: 1,001-5,000 | Baton Rouge, LA, United States | 1,001-5,000 | Exact match | 136 contacts → |
“Founded in 1979, Lofton Security is the largest locally-owned, independent security and staffing company in the southern region.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Security ONEsoisecurity.comHQ: Memphis, TN, United StatesReported employees: 501-1,000 | Memphis, TN, United States | 501-1,000 | Exact match | 126 contacts → |
“Security One, Inc.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  MPS Security & Protectionsecurity-mps.comHQ: Murrieta, CA, United StatesReported employees: 51-200 | Murrieta, CA, United States | 51-200 | Exact match | 118 contacts → |
“MPS Security, a division of National Business Investigations, Inc.(NBI), is a full-service security firm providing Executive Protection and Residential Security Team protection.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Brantley Security Servicesbrantleysecurity.comHQ: Louisville, KY, United StatesReported employees: 1,001-5,000 | Louisville, KY, United States | 1,001-5,000 | Exact match | 112 contacts → |
“Brantley Security provides quality security services through quick response, experienced management and an unmatched attention to detail.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Universal Atlantic Systemsuas.comHQ: Paoli, PA, United StatesReported employees: 51-200 | Paoli, PA, United States | 51-200 | Exact match | 103 contacts → |
“Headquartered in suburban Philadelphia, UAS is a national provider of integrated security services protecting over $15 billion in commercial assets for a wide variety of clients…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Guard-Systems, INCguardsystemsinc.comHQ: Monterey Park, CA, United StatesReported employees: 501-1,000 | Monterey Park, CA, United States | 501-1,000 | Exact match | 101 contacts → |
“Guard-Systems, Inc (GSI) has been delivering on our promises since 1956 As a result of this simple philosophy, we have grown to become one of the largest privately held contract…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 558 company matches
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Healthcare facility security services: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
553 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 558 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for healthcare facility security services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many healthcare facility security services did RevenueBase find based in the United States?
The saved snapshot records 558 matching company records, 19,418 tracked contacts and 1,579 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Healthcare facility security services by geography
- Healthcare facility security services based in London, United Kingdom
- Healthcare facility security services based in Australia
- Healthcare facility security services based in Brazil
- Healthcare facility security services based in Canada
- Healthcare facility security services based in France
- Healthcare facility security services based in Germany
- Healthcare facility security services based in India
- Healthcare facility security services based in the Netherlands
- Healthcare facility security services based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 healthcare facility security services based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/healthcare-facility-security-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Healthcare facility security services based in London, United Kingdom
- Healthcare facility security services based in Australia
- Healthcare facility security services based in Brazil
- Healthcare facility security services based in Canada
- Healthcare facility security services based in France
- Healthcare facility security services based in Germany
Company intelligence · public preview
Top 25 healthcare facility security services based in the United States
RevenueBase records 558 matching company records for healthcare facility security services based in the United States, with 19,418 tracked contacts and 1,579 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 28, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 healthcare facility security services based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Unemployedexcelsiordefense.com HQ: St. Petersburg, FL, United StatesReported employees: Not recorded | St. Petersburg, FL, United States | Not recorded | Exact match | 4,038 contacts → |
“Excelsior Defense is a security and investigations company based out of St.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Guardsmarkguardsmark.com HQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,375 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | SOS Security LLCsossecurity.com HQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 1,151 contacts → |
“SOS Security is a known innovator and leader in the security and protective services industry.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Titan Security Grouptitan-security.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,138 contacts → |
“At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | St. Moritz Security Services, INCsmssi.com HQ: Pittsburgh, PA, United StatesReported employees: 5,001-10,000 | Pittsburgh, PA, United States | 5,001-10,000 | Exact match | 1,062 contacts → |
“Founded in 1982, St.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Mulligan Securitymulligansecurity.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 519 contacts → |
“Mulligan is a Manhattan-based provider of the finest security and fire safety professionals available.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Kent Serviceskentservices.com HQ: North Miami Beach, FL, United StatesReported employees: 1,001-5,000 | North Miami Beach, FL, United States | 1,001-5,000 | Exact match | 417 contacts → |
“At Kent, we’re able to pull from an unequaled pool of business and security products and services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Elite Security & Staffingelitesecuritystaffing.com HQ: San Diego, CA, United StatesReported employees: 5,001-10,000 | San Diego, CA, United States | 5,001-10,000 | Exact match | 376 contacts → |
“Elite staffs events and facilities with professionals who create a safe and secure environment.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cambridge Security Services Corpcambridgesecurityservices.com HQ: Fort Lauderdale, FL, United StatesReported employees: 1,001-5,000 | Fort Lauderdale, FL, United States | 1,001-5,000 | Exact match | 346 contacts → |
“Cambridge Security Services is a private security company that has been in business for more than 30 years.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Doyle Security Services, Inc. DSSdoylesecurityservices.com HQ: Rockville Centre, NY, United StatesReported employees: 1,001-5,000 | Rockville Centre, NY, United States | 1,001-5,000 | Exact match | 275 contacts → |
“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.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Central Defense Security, LLCcentdef.com HQ: N. Little Rock, AR, United StatesReported employees: 501-1,000 | N. Little Rock, AR, United States | 501-1,000 | Exact match | 208 contacts → |
“Central Defense Security officers protect the human, intellectual and physical assets of our customers and their visitors.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Datawatch Systemsdatawatchsystems.com HQ: Bethesda, MD, United StatesReported employees: 201-500 | Bethesda, MD, United States | 201-500 | Exact match | 206 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Pacwest Security Servicespacwestsecurity.com HQ: Costa Mesa, CA, United StatesReported employees: 501-1,000 | Costa Mesa, CA, United States | 501-1,000 | Exact match | 199 contacts → |
“We are a privately owned California security services provider who is committed to excellence in service in every aspect of our business.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Aegis Protective Servicesaegis-ps.com HQ: Cincinnati, OH, United StatesReported employees: 201-500 | Cincinnati, OH, United States | 201-500 | Exact match | 165 contacts → |
“Security Guard and Technology Services.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | OLD Accountipsc.biz HQ: Hammond, LA, United StatesReported employees: Not recorded | Hammond, LA, United States | Not recorded | Exact match | 156 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 16 | Blackstone Security Services, INCblackstonesecurity.com HQ: Phoenix, AZ, United StatesReported employees: 501-1,000 | Phoenix, AZ, United States | 501-1,000 | Exact match | 155 contacts → |
“Blackstone Security Services is proud to offer a wide variety of security services tailored to satisfy specific client needs.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | American Securitytrustamericansecurity.com HQ: Greenville, SC, United StatesReported employees: 1,001-5,000 | Greenville, SC, United States | 1,001-5,000 | Exact match | 143 contacts → |
“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…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Kellington Protection Service, LLCkellingtonprotection.com HQ: Pittsburgh, PA, United StatesReported employees: 201-500 | Pittsburgh, PA, United States | 201-500 | Exact match | 142 contacts → |
“At Kellington Protection Service “KPS”, we understand what is necessary to handle the new challenges and responsibilities constantly evolving in commercial and residential…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Phoenix Protective Corpphoenixprotectivecorp.com HQ: Spokane Valley, WA, United StatesReported employees: 501-1,000 | Spokane Valley, WA, United States | 501-1,000 | Exact match | 142 contacts → |
“Phoenix Protective Corporation delivers proactive security solutions with highly trained, experienced security officers and outstanding customer protection.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Lofton Security Servicelofton.jobs HQ: Baton Rouge, LA, United StatesReported employees: 1,001-5,000 | Baton Rouge, LA, United States | 1,001-5,000 | Exact match | 136 contacts → |
“Founded in 1979, Lofton Security is the largest locally-owned, independent security and staffing company in the southern region.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Security ONEsoisecurity.com HQ: Memphis, TN, United StatesReported employees: 501-1,000 | Memphis, TN, United States | 501-1,000 | Exact match | 126 contacts → |
“Security One, Inc.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | MPS Security & Protectionsecurity-mps.com HQ: Murrieta, CA, United StatesReported employees: 51-200 | Murrieta, CA, United States | 51-200 | Exact match | 118 contacts → |
“MPS Security, a division of National Business Investigations, Inc.(NBI), is a full-service security firm providing Executive Protection and Residential Security Team protection.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Brantley Security Servicesbrantleysecurity.com HQ: Louisville, KY, United StatesReported employees: 1,001-5,000 | Louisville, KY, United States | 1,001-5,000 | Exact match | 112 contacts → |
“Brantley Security provides quality security services through quick response, experienced management and an unmatched attention to detail.” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Universal Atlantic Systemsuas.com HQ: Paoli, PA, United StatesReported employees: 51-200 | Paoli, PA, United States | 51-200 | Exact match | 103 contacts → |
“Headquartered in suburban Philadelphia, UAS is a national provider of integrated security services protecting over $15 billion in commercial assets for a wide variety of clients…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Guard-Systems, INCguardsystemsinc.com HQ: Monterey Park, CA, United StatesReported employees: 501-1,000 | Monterey Park, CA, United States | 501-1,000 | Exact match | 101 contacts → |
“Guard-Systems, Inc (GSI) has been delivering on our promises since 1956 As a result of this simple philosophy, we have grown to become one of the largest privately held contract…” Recorded description excerpt · September 28, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Healthcare facility security services: dataset insights
September 28, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
553 records in the displayed employee bands.
5 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 558 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 28, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for healthcare facility security services?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many healthcare facility security services did RevenueBase find based in the United States?
The saved snapshot records 558 matching company records, 19,418 tracked contacts and 1,579 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 28, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Healthcare facility security services by geography
- Healthcare facility security services based in London, United Kingdom
- Healthcare facility security services based in Australia
- Healthcare facility security services based in Brazil
- Healthcare facility security services based in Canada
- Healthcare facility security services based in France
- Healthcare facility security services based in Germany
- Healthcare facility security services based in India
- Healthcare facility security services based in the Netherlands
- Healthcare facility security services based in the United Kingdom
Cite this list
RevenueBase Data Team. Top 25 healthcare facility security services based in the United States. Snapshot: September 28, 2026. https://revenuebase.ai/companies/healthcare-facility-security-services/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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- Healthcare facility security services based in London, United Kingdom
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- Healthcare facility security services based in Brazil
- Healthcare facility security services based in Canada
- Healthcare facility security services based in France
- Healthcare facility security services based in Germany