Company lists · Data refreshed September 2026
Top 25 Emergency medical services based in the United States
RevenueBase identified 846 emergency medical services headquartered in the United States as of September 2026 and tracks 44,495 professional contacts across them, including 7,992 with verified work emails. Houston is the largest hub.
This list covers emergency medical services headquartered in the 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 16, 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.
The 25 largest emergency medical services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 9,614 contacts → | ||||
Partial evidence “American Medical Response, America’s leading provider of medical transportation, has a single mission: making a difference by caring for people in need.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 4,169 contacts → | ||||
Partial evidence “Quality emergency care doesn’t begin in the hospital emergency room – it begins at the scene of the accident or the moment a life-threatening illness strikes.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,158 contacts → | ||||
Partial evidence “Since its founding in 1971, Acadian Ambulance has grown to provide emergency and non-emergency transportation to more than 70 counties in Louisiana, Texas, Mississippi and…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,463 contacts → | ||||
Indirect evidence “Northern Arizona Healthcare serves more than people over square miles in six locations, and are ranked in the top 20 percent of small healthcare systems in the nation by Truven…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,146 contacts → | ||||
Indirect evidence “The Midwest leader in EMS, Superior Air-Ground Ambulance, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 682 contacts → | ||||
Indirect evidence “Since 1977, Cataldo Ambulance Service, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 665 contacts → | ||||
Partial evidence “A trusted name since 1906, providing a variety of services including 911 emergency response, Advanced Life Support (ALS), Basic Life Support (BLS), wheelchair van transportation…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 587 contacts → | ||||
Partial evidence “Royal Ambulance partners with the Bay Area's leading hospitals and health systems to deliver advanced clinical transport and serves as a trusted medical provider for premier…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 566 contacts → | ||||
Indirect evidence “Ambulnz is a new class of ambulance service provider, one that's transforming patient transportation through applied innovation, better compensation for EMTs and a unique business…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 467 contacts → | ||||
Indirect evidence “We live by our mission: In every situation, do what is right for the patient.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 422 contacts → | ||||
Strong evidence “Allegiance Mobile Health is the largest private Texas based provider of medical transportation and 911 emergency services throughout the state.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 421 contacts → | ||||
Strong evidence “Based in Knoxville, Tenn, Priority Ambulance provides the highest level of clinical excellence in emergency and nonemergency medical care to the communities it serves.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 398 contacts → | ||||
Indirect evidence “Lifeguard Ambulance Service was founded in 1990 by John and Deborah Roche as a small domestic and international provider of fixed-wing air ambulance services.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 378 contacts → | ||||
Indirect evidence “Our Focus Is You.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 353 contacts → | ||||
Partial evidence “Since 1994, Mobile Medical Response (MMR) has provided high-performance medical transportation and pre-hospital care across mid and northern Michigan.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 322 contacts → | ||||
Partial evidence “Care Ambulance Service has provided emergency and non-emergency ambulance service to Orange County and Los Angeles County for over forty-nine years.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 293 contacts → | ||||
Indirect evidence “City Ambulance Service is a leading healthcare transportation provider dedicated to delivering safe, reliable, and compassionate patient care.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 285 contacts → | ||||
Partial evidence “Pafford Medical Services, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 278 contacts → | ||||
Partial evidence “LifeLine-EMS is Southern California's premier response medical transportation agency, providing EMT, Paramedic, and Critical Care level services to patients in the communities we…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 263 contacts → | ||||
Indirect evidence “Premier Ambulance, Inc.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 257 contacts → | ||||
Indirect evidence “Austin-Travis County EMS changes the lives of the people we serve by preserving life, improving health, and promoting safety.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 246 contacts → | ||||
Indirect evidence “LifeLine Ambulance Service, LLC A Transformative Healthcare Company LifeLine Ambulance was charted with the Commonwealth of Massachusetts, on April 25, 2006.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 241 contacts → | ||||
Indirect evidence “We are currently hiring to fill Chair Car, EMT and Paramedic positions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 227 contacts → | ||||
Strong evidence “Emergent Health Partners is a nonprofit emergency medical services organization providing ALS and BLS EMS services to 1.1 million people in 14 counties of southern Michigan.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 214 contacts → | ||||
Indirect evidence “When lives are on the line, you need the right tools in the bag and the right team at your side to make a difference.” Source: RevenueBase Database · checked Sep 16, 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: emergency medical services. 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 emergency medical services.
- Partial evidence
- Its own public description names part of emergency medical services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name emergency medical services. 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 846 emergency medical services based in the United States
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Emergency medical services based in the United States at a glance
As of Sep 16, 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 846 companies.
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 emergency medical services, 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 the United States whose own description of what they do matches “emergency medical services”. 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 emergency medical services), 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 emergency medical services, and records with no verified work email. Companies headquartered outside United States 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, 7,992 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 16, 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.
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 emergency medical services, 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 emergency medical services are there based in the United States?
RevenueBase identified 846 emergency medical services headquartered in the 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?
American Medical Response, headquartered in Greenwood Village, tops this list with the largest team on record.
Which city has the most emergency medical services?
Houston leads with 9 headquartered companies, followed by Los Angeles (7) and Denver (5).
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 7,992 verified decision-maker contacts tracked across these 846 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 16, 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.
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