Company lists · Data refreshed September 2026
Top 25 Emergency room operators based in the United States
RevenueBase identified 344 emergency room operators headquartered in the United States as of September 2026 and tracks 11,989 professional contacts across them, including 2,517 with verified work emails. Houston is the largest hub.
This list covers emergency room operators 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 19, 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 room operators based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,926 contacts → | ||||
Partial evidence “US Acute Care Solutions (USACS) is the leading Clinician-centric provider of hospital-based emergency and inpatient medicine.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,011 contacts → | ||||
Partial evidence “Rural/Metro is part of American Medical Response (AMR), a leading provider of emergency medical services (EMS), delivering quality pre-hospital healthcare to thousands of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 895 contacts → | ||||
Indirect evidence “At NextCare, we believe exceptional care starts with exceptional people.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 344 contacts → | ||||
Indirect evidence “Phishing Alert- Exer has recently been made aware of a phishing scam using our name and logo.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 177 contacts → | ||||
Partial evidence “Neighbors Emergency Center has a Purpose that drives our vision inspired by our patients, culture, and community.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 165 contacts → | ||||
Strong evidence “Legacy ER & Urgent Care, part of the Intuitive Health family of ER & Urgent Cares combines a full-service, freestanding emergency room, and a leading-edge urgent care center all…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 138 contacts → | ||||
Strong evidence “We founded Physicians Premier ER in Corpus Christi as a freestanding emergency room where patients could receive immediate care that was both high-quality and convenient.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 131 contacts → | ||||
Partial evidence “Emergent Medical Associates (EMA), headquartered in El Segundo, CA, is a leading provider of emergency care and episodic care management services to patients, communities…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 129 contacts → | ||||
Strong evidence “Ally Medical ER operates freestanding emergency rooms across Texas in the Austin, Dallas-Fort Worth, and Houston areas.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 88 contacts → | ||||
Indirect evidence “Duke City Urgent and Primary Care, located in Albuquerque, Los Lunas and the East Mountains is proud to offer fast, friendly, and high-quality urgent care to patients of all ages.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 72 contacts → | ||||
Partial evidence “Headquartered in Pensacola, Florida, ECP is a leading provider of emergency medicine and emergency department management services for hospitals across the U.S, with current…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 70 contacts → | ||||
Partial evidence “We created Austin Emergency Centers (AEC) to bring concierge-level, quality emergency care to the local community.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 67 contacts → | ||||
Partial evidence “Progressive Emergency Physicians (Progressive) was founded in 2013 by board certified emergency medicine physicians with a keen understanding of emergency medicine and business…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 60 contacts → | ||||
Indirect evidence “At Chai Care we offer an abundant array of health services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 59 contacts → | ||||
Partial evidence “The Emergency Center offers comprehensive emergent evaluation and treatment 24 hours a day, 7 days a week with NO WAIT.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 55 contacts → | ||||
Indirect evidence “Saint Luke’s Community Hospital provides an innovative approach to personalized, high quality, compassionate care from board-certified/eligible ER physicians and registered…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 54 contacts → | ||||
Strong evidence “ER of Texas has top-rated emergency rooms in Little Elm, Highland Village, Frisco, Mansfield, Colleyville, Hurst, Texoma, Hillcrest, and Uptown, TX.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 49 contacts → | ||||
Partial evidence “The Urgency Room is an all-new acute care center created by EPPA, the same ER doctors who have been working in several Twin Cities’ hospitals across the metro for the past 50…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 48 contacts → | ||||
Partial evidence “When you need emergency care, you need it fast.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 47 contacts → | ||||
Strong evidence “We are an upscale Urgent Care with capabilities and resources equal to any hospital Emergency Room.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 43 contacts → | ||||
Indirect evidence “Summit Urgent Care and Summit Occupational Medicine were opened by Dr.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 41 contacts → | ||||
Indirect evidence “Thompson Valley EMS 4480 Clydesdale Parkway, Loveland, Colorado, 80538” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 41 contacts → | ||||
Indirect evidence “Statcare Urgent Care is In-Network with Insurance Plans so your Insurance covers your medical care visit with us.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 40 contacts → | ||||
Partial evidence “Pennsylvania Ambulance delivers superior pre-hospital emergent and non-emergent patient care.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 38 contacts → | ||||
Strong evidence “We were the first Freestanding Emergency Rooms in Laredo, TX and now our North location is a state licensed acute care specialty hospital.” Source: RevenueBase Database · checked Sep 19, 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 room operators. 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 room operators.
- Partial evidence
- Its own public description names part of emergency room operators, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name emergency room operators. 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 344 emergency room operators based in the United States
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Emergency room operators based in the United States at a glance
As of Sep 19, 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 344 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 room operators, 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 room operators”. 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 room operators), 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 room operators, 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, 2,517 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 19, 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 room operators, 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 room operators are there based in the United States?
RevenueBase identified 344 emergency room operators 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?
US Acute Care Solutions, headquartered in Canton, tops this list with the largest team on record.
Which city has the most emergency room operators?
Houston leads with 21 headquartered companies, followed by Plano (6) and Dallas (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 2,517 verified decision-maker contacts tracked across these 344 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 19, 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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