Company lists · Data refreshed September 2026
Top 25 Accountable care organizations worldwide
RevenueBase identified 779 accountable care organizations worldwide as of September 2026 and tracks 346,127 professional contacts across them, including 65,336 with verified work emails. The United States is the largest market and Nashville the largest hub.
This list covers accountable care organizations 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 19, 2026. Country and city lists for accountable care organizations 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 accountable care organizations worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 116,185 contacts → | ||||
Partial evidence “At the heart of health care, you’ll find Kaiser Permanente.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 26,905 contacts → | ||||
Indirect evidence “Headquartered in Utah with locations in six primary states and additional operations across the western U.S, Intermountain Health is a nonprofit system of 34 hospitals, 400+…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 25,184 contacts → | ||||
Indirect evidence “With us by your side, there's no stopping you.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 17,797 contacts → | ||||
Partial evidence “Sentara Health, an integrated, not-for-profit health care delivery system, celebrates more than 135 years in pursuit of its mission -"we improve health every day." Sentara is one…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 10,102 contacts → | ||||
Indirect evidence “Fairview Health Services is Minnesota’s choice for healthcare.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 9,956 contacts → | ||||
Partial evidence “WellSpan Health’s vision is to reimagine healthcare through the delivery of comprehensive, equitable health and wellness solutions throughout our continuum of care.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 7,967 contacts → | ||||
Partial evidence “Carilion Clinic is a non-profit health care organization serving nearly one million people in Virginia through hospitals, outpatient specialty centers and advanced primary care…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 5,779 contacts → | ||||
Partial evidence “UAE’s largest healthcare network, offering integrated patient-centric care.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 4,851 contacts → | ||||
Indirect evidence “Summa Health is one of the largest integrated delivery systems in Ohio.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4,756 contacts → | ||||
Partial evidence “The Christ Hospital Health Network is a regional system of care that extends The Christ Hospital's 130 years of exceptional care and leadership to more than 100 locations in the…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4,595 contacts → | ||||
Indirect evidence “We united with Bellin Health in 2022 to form Emplify Health.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 4,064 contacts → | ||||
Indirect evidence “Prisma Health is the largest not-for-profit health organization in South Carolina, serving more than 1.2 million patients annually with over team members.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3,709 contacts → | ||||
Indirect evidence “McLeod Health is the region's destination for medical excellence.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3,595 contacts → | ||||
Indirect evidence “AtlantiCare is an integrated system of services designed to help people achieve optimal health.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3,585 contacts → | ||||
Partial evidence “Nearly a decade ago, Steward Health Care System emerged as a different kind of health care company designed to usher in a new era of wellness-one that provides patients better…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3,455 contacts → | ||||
Partial evidence “Advocate Health is redefining how, when and where care is delivered to help people live well.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3,336 contacts → | ||||
Partial evidence “We’re a unified network of care dedicated to helping you feel whole in every aspect of your health and wellness.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,906 contacts → | ||||
Partial evidence “Atrius Health, an innovative healthcare leader, delivers an effective system of connected care for adult and pediatric patients at 30 medical practice locations in eastern…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,842 contacts → | ||||
Partial evidence “Duly Health and Care is the largest independent, medical group in the nation with more than primary care and specialty care providers and over team members across more…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,698 contacts → | ||||
Partial evidence “Aledade is a physician-led public benefit corporation and national leader in value‑based care.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,617 contacts → | ||||
Partial evidence “Trinity Health Of New England is an integrated health care delivery system comprised of world-class providers and facilities dedicated to the full spectrum of preventive, acute…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,554 contacts → | ||||
Indirect evidence “MemorialCare, is a leading nonprofit health system in Orange County and Los Angeles County that includes four hospitals, two medical groups, imaging centers, surgical centers and…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,372 contacts → | ||||
Indirect evidence “Welcome to Blessing Health System.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,314 contacts → | ||||
Indirect evidence “Het Flevoziekenhuis in Almere is hét ziekenhuis voor de achtste stad van Nederland.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,267 contacts → | ||||
Indirect evidence “Revere Health is the largest independent multispecialty physician group in Utah and employs over 200 physicians and 200 advanced practitioners.” 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: accountable care organizations. 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 accountable care organizations.
- Partial evidence
- Its own public description names part of accountable care organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name accountable care organizations. 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 779 accountable care organizations worldwide
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Accountable care organizations worldwide at a glance
As of Sep 19, 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 accountable care organizations, 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 accountable care organizations are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “accountable care organizations”. 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 accountable care organizations), 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 accountable care organizations, 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, 65,336 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.
Accountable care organizations by location
1 lists · largest firstEvery Accountable care organizations 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 accountable care organizations, 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 accountable care organizations are there worldwide?
RevenueBase identified 779 accountable care organizations 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?
Kaiser Permanente, headquartered in Oakland, tops this list with the largest team on record.
Which country has the most accountable care organizations?
The United States leads with 531 companies. Every accountable care organizations list by country and city is linked on this page.
Which city has the most accountable care organizations?
Nashville leads with 10 headquartered companies, followed by New York (10) and Chicago (8).
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 65,336 verified decision-maker contacts tracked across these 779 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.