Company lists · Data refreshed September 2026

Top 25 Multi-specialty medical groups based in the United States

RevenueBase identified 9,815 multi-specialty medical groups headquartered in the United States as of September 2026 and tracks 1,570,847 professional contacts across them, including 434,019 with verified work emails. New York is the largest hub.

This list covers multi-specialty medical groups 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 17, 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 17, 2026 86% judged on-target in blind review
9,815Companies
1,570,847Contacts tracked
434,019Verified emails
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The 25 largest multi-specialty medical groups based in the United States

Ranked by team size
Top 25 of 9,815 multi-specialty medical groups based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to multi-specialty medical groups: 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 17, 202610001+68,631 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
2Indirect evidencePhoenix, AZ, United StatesHQ checked Sep 17, 202610001+30,832 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
3Indirect evidenceAltamonte Springs, FL, United StatesHQ checked Sep 17, 2026n/a28,327 contacts →

Indirect evidence

“AdventHealth is a connected network of care that helps people feel whole – body, mind and spirit.”

Source: RevenueBase Database · checked Sep 17, 2026
4Indirect evidenceMurray, UT, United StatesHQ checked Sep 17, 202610001+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 17, 2026
5Indirect evidenceDallas, TX, United StatesHQ checked Sep 17, 202610001+25,184 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
6Indirect evidenceAurora, CO, United StatesHQ checked Sep 17, 202610001+18,089 contacts →

Indirect evidence

“At UCHealth, we do things differently.”

Source: RevenueBase Database · checked Sep 17, 2026
7Indirect evidenceRenton, WA, United StatesHQ checked Sep 17, 202610001+18,035 contacts →

Indirect evidence

“At Providence, our strength begins with understanding.”

Source: RevenueBase Database · checked Sep 17, 2026
8Indirect evidenceVirginia Beach, VA, United StatesHQ checked Sep 17, 202610001+17,797 contacts →

Indirect 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 17, 2026
9Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 17, 202610001+16,993 contacts →

Indirect evidence

“We provide quality, compassionate health care at more than 40 hospitals and care centers that are serving communities across California, Arizona and Nevada every minute of every…”

Source: RevenueBase Database · checked Sep 17, 2026
10Indirect evidenceHouston, TX, United StatesHQ checked Sep 17, 202610001+16,805 contacts →

Indirect evidence

“Advancing Health.”

Source: RevenueBase Database · checked Sep 17, 2026
11Indirect evidenceEdison, NJ, United StatesHQ checked Sep 17, 202610001+16,477 contacts →

Indirect evidence

“Keep getting better.”

Source: RevenueBase Database · checked Sep 17, 2026
12Indirect evidenceCoral Gables, FL, United StatesHQ checked Sep 17, 202610001+16,090 contacts →

Indirect evidence

“Baptist Health South Florida is the region’s largest not-for-profit healthcare organization with 12 hospitals, more than employees, 4,500 physicians, and 200 outpatient centers…”

Source: RevenueBase Database · checked Sep 17, 2026
13Indirect evidenceMarietta, GA, United StatesHQ checked Sep 17, 202610001+15,788 contacts →

Indirect 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 17, 2026
14Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 17, 202610001+15,745 contacts →

Partial 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 17, 2026
15Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 17, 202610001+14,144 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
16Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 17, 202610001+13,757 contacts →

Indirect evidence

“People at Allina Health have a career of making a difference in the lives of the millions of patients we see each year at our 90+ clinics, 12 hospitals and through a wide variety…”

Source: RevenueBase Database · checked Sep 17, 2026
17Indirect evidenceClearwater, FL, United StatesHQ checked Sep 17, 202610001+13,405 contacts →

Indirect evidence

“BayCare is a leading not-for-profit academic health care system that connects individuals and families to a wide range of services at 16 hospitals, including a children’s…”

Source: RevenueBase Database · checked Sep 17, 2026
18Indirect evidenceGrand Rapids, MI, United StatesHQ checked Sep 17, 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 17, 2026
19Indirect evidenceBaltimore, MD, United StatesHQ checked Sep 17, 202610001+11,561 contacts →

Indirect evidence

“The Johns Hopkins Hospital is a world renowned leader in patient care, serving the greater Baltimore community and patients from all across the globe.”

Source: RevenueBase Database · checked Sep 17, 2026
20Indirect evidenceCincinnati, OH, United StatesHQ checked Sep 17, 202610001+11,136 contacts →

Indirect evidence

“At Mercy Health, we understand that every family is a universe.”

Source: RevenueBase Database · checked Sep 17, 2026
21Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 17, 202610001+10,710 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
22Indirect evidenceSan Diego, CA, United StatesHQ checked Sep 17, 202610001+10,445 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
23Indirect evidenceMinneapolis, MN, United StatesHQ checked Sep 17, 202610001+10,102 contacts →

Indirect evidence

“Fairview Health Services is Minnesota’s choice for healthcare.”

Source: RevenueBase Database · checked Sep 17, 2026
24Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 17, 20265,001-10,00010,064 contacts →

Partial 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 17, 2026
25Indirect evidenceYork, PA, United StatesHQ checked Sep 17, 202610001+9,956 contacts →

Indirect 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 17, 2026

Showing 25 of 9,815 multi-specialty medical groups based in the United States

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Multi-specialty medical groups based in the United States at a glance

As of Sep 17, 2026
27.6%Verified-email coverage
160.0Average contacts per company
11-50Median size (employees)
1.4%Largest-city concentration · New York
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
3,654
11-50
2,779
51-200
1,395
201-500
721
501-1,000
406
1,001-5,000
542
5,001-10,000
88
10001+
156

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 9,815 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 multi-specialty medical groups, 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 “multi-specialty medical groups”. 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 multi-specialty medical groups), 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 multi-specialty medical groups, 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, 434,019 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 17, 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.

Multi-specialty medical groups by metro

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 multi-specialty medical groups, 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 multi-specialty medical groups are there based in the United States?

RevenueBase identified 9,815 multi-specialty medical groups 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 multi-specialty medical groups?

New York leads with 140 headquartered companies, followed by Houston (131) and Miami (87).

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 434,019 verified decision-maker contacts tracked across these 9,815 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 17, 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.