Company lists · Data refreshed September 2026

Top 25 Hospital systems and networks based in the United States

RevenueBase identified 537 hospital systems and networks headquartered in the United States as of September 2026 and tracks 878,981 professional contacts across them, including 242,349 with verified work emails. New York is the largest hub.

This list covers hospital systems and networks 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 16, 2026 86% judged on-target in blind review
537Companies
878,981Contacts tracked
242,349Verified emails
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The 25 largest hospital systems and networks based in the United States

Ranked by team size
Top 25 of 537 hospital systems and networks based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to hospital systems and networks: 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
1Indirect evidenceNashville, TN, United StatesHQ checked Sep 16, 202610001+68,631 contacts →

Indirect evidence

“HCA Healthcare is dedicated to giving people a healthier tomorrow.”

Source: RevenueBase Database · checked Sep 16, 2026
2Partial evidencePhoenix, AZ, United StatesHQ checked Sep 16, 202610001+30,832 contacts →

Partial evidence

“Headquartered in Arizona, Banner Health is one of the largest nonprofit health care systems in the country.”

Source: RevenueBase Database · checked Sep 16, 2026
3Strong evidenceProvidence, RI, United StatesHQ checked Sep 16, 202610001+27,576 contacts →

Strong evidence

“Formed in 1994, Brown University Health (Formerly Lifespan) is a not-for-profit health system based in Providence, RI comprising three teaching hospitals of The Warren Alpert…”

Source: RevenueBase Database · checked Sep 16, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 16, 202610001+25,776 contacts →

Partial evidence

“NYU Langone Health is a fully integrated health system that consistently achieves the best patient outcomes through a rigorous focus on quality that has resulted in some of the…”

Source: RevenueBase Database · checked Sep 16, 2026
5Indirect evidenceDallas, TX, United StatesHQ checked Sep 16, 202610001+25,184 contacts →

Indirect evidence

“With us by your side, there's no stopping you.”

Source: RevenueBase Database · checked Sep 16, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 16, 202610001+24,049 contacts →

Indirect evidence

“At NewYork-Presbyterian, we put patients first.”

Source: RevenueBase Database · checked Sep 16, 2026
7Indirect evidenceChesterfield, MO, United StatesHQ checked Sep 16, 202610001+23,118 contacts →

Indirect evidence

“At Mercy, care is more than a job - it’s a calling.”

Source: RevenueBase Database · checked Sep 16, 2026
8Indirect evidenceAurora, CO, United StatesHQ checked Sep 16, 202610001+18,089 contacts →

Indirect evidence

“At UCHealth, we do things differently.”

Source: RevenueBase Database · checked Sep 16, 2026
9Indirect evidenceEdison, NJ, United StatesHQ checked Sep 16, 202610001+16,477 contacts →

Indirect evidence

“Keep getting better.”

Source: RevenueBase Database · checked Sep 16, 2026
10Strong evidenceCleveland, OH, United StatesHQ checked Sep 16, 202610001+16,216 contacts →

Strong evidence

“Founded in 1866, University Hospitals serves the needs of patients through an integrated network of 23 hospitals (including 5 joint ventures), more than 50 health centers and…”

Source: RevenueBase Database · checked Sep 16, 2026
11Partial evidenceMarietta, GA, United StatesHQ checked Sep 16, 202610001+15,788 contacts →

Partial evidence

“At Wellstar Health System, our mission is to enhance the health and well-being of every person we serve.”

Source: RevenueBase Database · checked Sep 16, 2026
12Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 16, 202610001+15,745 contacts →

Indirect evidence

“For more than half a century, UCLA Health has provided the best in healthcare and the latest in medical technology to the people of Los Angeles and throughout the world.”

Source: RevenueBase Database · checked Sep 16, 2026
13Partial evidenceNew York, NY, United StatesHQ checked Sep 16, 202610001+15,195 contacts →

Partial evidence

“The Mount Sinai Health System is an integrated health system committed to providing distinguished care, conducting transformative research, and advancing biomedical education.”

Source: RevenueBase Database · checked Sep 16, 2026
14Partial evidenceSioux Falls, SD, United StatesHQ checked Sep 16, 202610001+14,293 contacts →

Partial evidence

“Sanford Health is the largest rural health system in the U.S.”

Source: RevenueBase Database · checked Sep 16, 2026
15Strong evidenceAtlanta, GA, United StatesHQ checked Sep 16, 202610001+14,144 contacts →

Strong evidence

“Northside Hospital, a certified Great Place To Work®, is one of Georgia’s top health systems.”

Source: RevenueBase Database · checked Sep 16, 2026
16Partial evidenceMilwaukee, WI, United StatesHQ checked Sep 16, 202610001+13,458 contacts →

Partial evidence

“Advocate Aurora Health and Atrium Health are now Advocate Health – the fifth-largest nonprofit integrated health system in the U.S.”

Source: RevenueBase Database · checked Sep 16, 2026
17Strong evidenceNew York, NY, United StatesHQ checked Sep 16, 202610001+12,497 contacts →

Strong evidence

“NYC Health + Hospitals is the nation’s largest public health care delivery system.”

Source: RevenueBase Database · checked Sep 16, 2026
18Indirect evidenceGrand Rapids, MI, United StatesHQ checked Sep 16, 202610001+12,453 contacts →

Indirect evidence

“People are at the heart of everything we do, and the inspiration for our legacy of outstanding outcomes, innovation, strong community partnerships, philanthropy and transparency.”

Source: RevenueBase Database · checked Sep 16, 2026
19Indirect evidenceGreenville, SC, United StatesHQ checked Sep 16, 202610001+11,391 contacts →

Indirect evidence

“Prisma Health is the largest not-for-profit health organization in South Carolina, serving more than 1.2 million patients annually.”

Source: RevenueBase Database · checked Sep 16, 2026
20Strong evidenceBaltimore, MD, United StatesHQ checked Sep 16, 202610001+11,269 contacts →

Strong evidence

“The University of Maryland Medical System (UMMS) was created in 1984 when the state-owned University Hospital became a private, nonprofit organization.”

Source: RevenueBase Database · checked Sep 16, 2026
21Strong evidencePittsburgh, PA, United StatesHQ checked Sep 16, 202610001+10,710 contacts →

Strong evidence

“Allegheny Health Network is an integrated health care delivery system serving the greater Western Pennsylvania region.”

Source: RevenueBase Database · checked Sep 16, 2026
22Partial evidenceSan Diego, CA, United StatesHQ checked Sep 16, 202610001+10,445 contacts →

Partial evidence

“Scripps Health is a nonprofit integrated healthcare delivery system based in San Diego, Calif.”

Source: RevenueBase Database · checked Sep 16, 2026
23Partial evidenceWinston-salem, NC, United StatesHQ checked Sep 16, 202610001+10,394 contacts →

Partial evidence

“Atrium Health Wake Forest Baptist is a nationally recognized academic medical center and health system based in Winston-Salem, NC, part of Advocate Health, the third-largest…”

Source: RevenueBase Database · checked Sep 16, 2026
24Partial evidenceOak Brook, IL, United StatesHQ checked Sep 16, 202610001+10,188 contacts →

Partial evidence

“Advocate Health Care is proud to be a part of Advocate Health, the third-largest nonprofit integrated health system in the U.S.”

Source: RevenueBase Database · checked Sep 16, 2026
25Strong evidenceSan Francisco, CA, United StatesHQ checked Sep 16, 20265,001-10,00010,064 contacts →

Strong evidence

“UCSF Health is an integrated health care network encompassing several entities, including UCSF Medical Center, one of the nation’s top 10 hospitals according to U.S.”

Source: RevenueBase Database · checked Sep 16, 2026

Showing 25 of 537 hospital systems and networks based in the United States

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Hospital systems and networks based in the United States at a glance

As of Sep 16, 2026
27.6%Verified-email coverage
1636.8Average contacts per company
501-1,000Median size (employees)
1.7%Largest-city concentration · New York
Sep 16, 2026Page data refreshed

Companies by employee count

1-10
94
11-50
71
51-200
41
201-500
28
501-1,000
40
1,001-5,000
123
5,001-10,000
53
10001+
87

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 537 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 hospital systems and networks, 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 “hospital systems and networks”. 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 hospital systems and networks), 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 hospital systems and networks, 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, 242,349 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 hospital systems and networks, 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 hospital systems and networks are there based in the United States?

RevenueBase identified 537 hospital systems and networks 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?

HCA Healthcare, headquartered in Nashville, tops this list with the largest team on record.

Which city has the most hospital systems and networks?

New York leads with 9 headquartered companies, followed by Atlanta (5) and Greenville (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 242,349 verified decision-maker contacts tracked across these 537 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.