Company lists · Data refreshed September 2026

Top 17 Healthcare security companies based in New York, United States

RevenueBase identified 27 healthcare security companies headquartered in New York, United States as of September 2026 and tracks 935 professional contacts across them, including 207 with verified work emails and 207 with mobile numbers. Across the United States, Los Angeles is the largest hub for this category (37 companies); New York follows with 30.

This list covers healthcare security companies headquartered in New York, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 12, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 12, 2026 86% judged on-target in blind review
27Companies
935Contacts tracked
207Verified emails
207Mobile numbers
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The 17 largest healthcare security companies based in New York, United States

Ranked by team size
Top 17 of 27 healthcare security companies based in New York, United States, ranked by team size, largest first. Data refreshed Sep 12, 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 evidenceNew York, NY, United StatesHQ checked Sep 12, 2026201-500206 contacts →

Partial evidence

“Since 1969, thousands of businesses across the country have entrusted their protection to DGA Security.”

Source: RevenueBase Database · checked Sep 12, 2026
2Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 2026501-1,000120 contacts →

Partial evidence

“Excel Security Corp.”

Source: RevenueBase Database · checked Sep 12, 2026
3Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 2026201-500103 contacts →

Partial evidence

“Narrow Security provides Fire Guard Services and Security Guard Services across the US.”

Source: RevenueBase Database · checked Sep 12, 2026
4Partial evidenceNew York, United StatesHQ checked Sep 12, 2026501-1,00082 contacts →

Partial evidence

“For over 30 years GMSC has been securing high profile buildings and offices across New York and Chicago.”

Source: RevenueBase Database · checked Sep 12, 2026
5Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 20261,001-5,00082 contacts →

Partial evidence

“Security USA®, Inc.”

Source: RevenueBase Database · checked Sep 12, 2026
6Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 20261,001-5,00068 contacts →

Partial evidence

“We are among the few private security guard companies offering security guard services nationwide.”

Source: RevenueBase Database · checked Sep 12, 2026
7Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 20261,001-5,00060 contacts →

Partial evidence

“A&H Security Services, is a certified NYC MBE security services provider who makes a difference in our community.”

Source: RevenueBase Database · checked Sep 12, 2026
8Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 2026501-1,00033 contacts →

Partial evidence

“Winfield Security has joined Tarian Security Group.”

Source: RevenueBase Database · checked Sep 12, 2026
9Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 202611-5023 contacts →

Partial evidence

“Target Security Systems, LLC is New York City’s leading provider of cutting edge, high security solutions customized for today’s business and private sectors.”

Source: RevenueBase Database · checked Sep 12, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 202651-20019 contacts →

Partial evidence

“Professional security solutions and protective firm, providing armed & unarmed security services, security patrols and executive Protection services for individuals, residential…”

Source: RevenueBase Database · checked Sep 12, 2026
11Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 202611-5018 contacts →

Partial evidence

“We help busy organizations provide maximum security with simple but sophisticated solutions which enable them to have everything under control.”

Source: RevenueBase Database · checked Sep 12, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 12, 2026201-50017 contacts →

Indirect evidence

“NEVER COMPROMISE WHEN IT COMES TO PROTECTION Under the leadership of Dennis J.”

Source: RevenueBase Database · checked Sep 12, 2026
13Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 202611-5013 contacts →

Partial evidence

“We help our clients focus on their primary business operations while we handle their security needs.”

Source: RevenueBase Database · checked Sep 12, 2026
14Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 202611-505 contacts →

Partial evidence

“Rigid Security is a New York-based security systems company specializing in professional-grade solutions for businesses, nonprofits, and government organizations.”

Source: RevenueBase Database · checked Sep 12, 2026
15Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 202611-503 contacts →

Partial evidence

“At Techumen, we simplify health care security.”

Source: RevenueBase Database · checked Sep 12, 2026
16Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 202611-503 contacts →

Partial evidence

“Rebel Security is a true security partner for Retail Stores, Schools, Residential Properties, Office Buildings, Houses of Worship, Hotels, Construction Sites, Medical Facilities…”

Source: RevenueBase Database · checked Sep 12, 2026
17Partial evidenceNew York, NY, United StatesHQ checked Sep 12, 202651-2002 contacts →

Partial evidence

“Securing the clinical environment requires a new security strategy and coordinated approach as IT, OT, IoT and physical systems converge and the threat of bad actors exploiting…”

Source: RevenueBase Database · checked Sep 12, 2026

Showing 17 of 27 healthcare security companies based in New York, United States

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Healthcare security companies based in New York, United States at a glance

As of Sep 12, 2026
22.1%Verified-email coverage
22.1%Mobile-number coverage
34.6Average contacts per company
51-200Median size (employees)
Sep 12, 2026Page data refreshed

Companies by employee count

1-10
2
11-50
10
51-200
4
201-500
3
501-1,000
4
1,001-5,000
3

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 15.0d

Company record updated

Median 76.0d

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.
What qualifies
Companies headquartered in New York, United States 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. Companies headquartered outside New York are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 207 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 12, 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 metro in the United States

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 based in New York, United States?

RevenueBase identified 27 healthcare security companies headquartered in New York, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

DGA Security, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most healthcare security companies?

Los Angeles leads the United States with 37 headquartered companies, followed by New York (30) and Miami (23).

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 207 verified decision-maker contacts tracked across these 27 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 12, 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.