Company lists · Data refreshed September 2026
Top 25 Outpatient surgery centers worldwide
RevenueBase identified 1,283 outpatient surgery centers worldwide as of September 2026 and tracks 19,647 professional contacts across them, including 4,133 with verified work emails. The United States is the largest market and Houston the largest hub.
This list covers outpatient surgery centers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for outpatient surgery centers follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest outpatient surgery centers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,181 contacts → | ||||
Strong evidence “United Surgical Partners International (USPI) is the largest ambulatory surgery platform in the country and operates ambulatory surgery centers and surgical hospitals.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,501 contacts → | ||||
Indirect evidence “Co-founded by Harsimarbir (Harsh) Singh, Dr.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 971 contacts → | ||||
Strong evidence “AMSURG is an independent leader in ambulatory surgery center services, operating a network of more than 250 surgery centers nationwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 543 contacts → | ||||
Partial evidence “Apollo Spectra came into existence to provide world-class facilities to patients for elective surgeries at a reasonable cost, under the parent institution of Apollo Group.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 404 contacts → | ||||
Strong evidence “Burjeel Day Surgery Center, Al Reem Island, Abu Dhabi.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 275 contacts → | ||||
Indirect evidence “Harley Street Medical Centre has provided Abu Dhabi with quality healthcare since 2012 and has grown to become one of the leading multispecialty centre in the region.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 263 contacts → | ||||
Indirect evidence “Fondée au début des années 80, la clinique est historiquement reconnue pour sa vocation en orthopédie.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 248 contacts → | ||||
Indirect evidence “An idea to change healthcare in the Mahoning Valley… The Surgical Hospital at Southwoods was created in 1996 with a singular purpose – to create a healthcare facility for our…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 216 contacts → | ||||
Indirect evidence “Symbion is a leading operator of short-stay surgical facilities.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 181 contacts → | ||||
Strong evidence “The new private one-day surgery center offering both inpatient and outpatient services was set up through the partnership of a group of renowned surgeons and physicians in Abu…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 175 contacts → | ||||
Indirect evidence “In 1946, physicians Clement R.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 152 contacts → | ||||
Partial evidence “West Bay Medicare is a one-day surgery centre located in the heart of Doha.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 146 contacts → | ||||
Indirect evidence “Abeer Medical Group is a multinational healthcare provider Group, which has established its capability in the KSA since its inception in the year The Group is spreading its wings…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 144 contacts → | ||||
Strong evidence “A specialist facility for minimally-invasive day surgery and outpatient diagnostics.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 133 contacts → | ||||
Strong evidence “Cure Day Hospitals specialises in ambulatory day procedures which is also known as outpatient surgery, same-day surgery or day surgery and does not require overnight stay.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 129 contacts → | ||||
Partial evidence “ARTEMIS eye clinics, surgery centres and practices stand for high-quality medical diagnostics and treatment of all major diseases of the human eye.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 116 contacts → | ||||
Strong evidence “EyeCare Services Partners (ESP) provides ownership and practice management of ophthalmologic, optometric and ambulatory surgery centers nationwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 115 contacts → | ||||
Indirect evidence “BHSH is among the nation’s best at providing orthopedic, spine and other surgical care.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 108 contacts → | ||||
Partial evidence “Our reputation for superior surgical care is based on our skilled independent physicians and surgeons, experienced staff, outstanding patient care, home-like comforts and enhanced…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 76 contacts → | ||||
Indirect evidence “Since 2004, Animas Surgical Hospital has been committed to providing Durango and Four Corners residents with a local choice in hospital facilities – one that is close, convenient…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 74 contacts → | ||||
Partial evidence “At Uptown Eye Specialists, our dedicated group of ophthalmologists are committed to providing patient-centered subspecialty eye care in an advanced and innovative medical and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 72 contacts → | ||||
Strong evidence “Copper Ridge Surgery Center was developed by local physicians in partnership with Munson Medical Center to create a state of the art outpatient surgical center.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 70 contacts → | ||||
Indirect evidence “La Clinique Ambroise Paré, établissement du groupe Ramsay Santé, s'est spécialisée dans la prise en charge de la chirurgie ophtalmologique, elle réalise 95% de ses opérations en…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 68 contacts → | ||||
Strong evidence “NueHealth is a leading provider of integrated ambulatory surgical care solutions, specializing in the development, management, and performance of ambulatory surgery centers (ASCs)…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 63 contacts → | ||||
Indirect evidence “La Clínica MEDIPORT es un moderno centro de medicina especializado en proveer servicios de Salas de Cirugía para procedimientos quirúrgicos ambulatorios en sus Sedes ubicadas…” Source: RevenueBase Database · checked Sep 20, 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: outpatient surgery centers. 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 outpatient surgery centers.
- Partial evidence
- Its own public description names part of outpatient surgery centers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name outpatient surgery centers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 1,283 outpatient surgery centers worldwide
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Outpatient surgery centers worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among outpatient surgery centers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for outpatient surgery centers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “outpatient surgery centers”. 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 outpatient surgery centers), 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 outpatient surgery centers, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 4,133 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 20, 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.
Outpatient surgery centers by location
2 lists · largest firstEvery Outpatient surgery centers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 outpatient surgery centers, 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 outpatient surgery centers are there worldwide?
RevenueBase identified 1,283 outpatient surgery centers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
United Surgical Partners International, INC, headquartered in Dallas, tops this list with the largest team on record.
Which country has the most outpatient surgery centers?
The United States leads with 828 companies, followed by Australia (32). Every outpatient surgery centers list by country and city is linked on this page.
Which city has the most outpatient surgery centers?
Houston leads with 14 headquartered companies, followed by Dallas (12) and New York (12).
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 4,133 verified decision-maker contacts tracked across these 1,283 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 20, 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.