Company lists · Data refreshed September 2026
Top 25 Medical practices based in the United States
RevenueBase identified 614 medical practices headquartered in the United States as of September 2026 and tracks 22,755 professional contacts across them, including 4,661 with verified work emails. New York is the largest hub.
This list covers medical practices 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.
The 25 largest medical practices based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,581 contacts → | ||||
Indirect evidence “Springfield Clinic is dedicated to preserving the trusted patient-provider relationships we have carefully developed through 84 years of serving you with reliable, primary and…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,076 contacts → | ||||
Partial evidence “Dignity Health Medical Foundation, established in 1990, is a not-for-profit organization providing award-winning, patient-centered health care in a variety of areas, including…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,065 contacts → | ||||
Indirect evidence “Starting with a single location in Alabama in 1982, American Family Care (AFC) has pioneered the concept of non–emergency room urgent care.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,046 contacts → | ||||
Partial evidence “Watson Clinic is one of the largest multispecialty medical clinics in Florida.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 5 | 738 contacts → | ||||
Indirect evidence “St.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 6 | 546 contacts → | ||||
Indirect evidence “A large private multi-specialty physician group in the city of Toledo.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 7 | 525 contacts → | ||||
Partial evidence “CommuniCare is a full-service primary healthcare system offering pediatric medicine, family medicine, senior care, women's health, senior care, teen health, sports medicine…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 8 | 490 contacts → | ||||
Indirect evidence “The newest member of the UMass Memorial Health system, Harrington serves patients from more than 25 communities across south central Massachusetts and northeastern Connecticut…” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 9 | 481 contacts → | ||||
Indirect evidence “Founded by Dr.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 10 | 472 contacts → | ||||
Partial evidence “Desert Oasis Healthcare is committed to the provision and facilitation of the highest quality medical care to the residents of the desert communities.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 11 | 455 contacts → | ||||
Partial evidence “InterMed is the largest physician-owned primary care practice in Maine, with 90 physicians and more than 650 non-physician employees.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 12 | 309 contacts → | ||||
Indirect evidence “Healthcare.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 13 | 300 contacts → | ||||
Indirect evidence “TotalCare is a family-owned, health-focused company in North Texas.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 14 | 283 contacts → | ||||
Indirect evidence “NorthShore Health Centers is a non-profit organization dedicated to providing quality, affordable healthcare to the uninsured and underinsured in Porter, Lake and LaPorte Counties.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 15 | 256 contacts → | ||||
Indirect evidence “Ozarks Community Hospital is a bi-state safety-net healthcare provider headquartered in Gravette, Arkansas, serving both urban and rural communities throughout the Ozarks.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 16 | 209 contacts → | ||||
Indirect evidence “Morehead Memorial Hospital is a not-for-profit community hospital located on a 22-acre campus in beautiful Eden, NC.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 17 | 208 contacts → | ||||
Partial evidence “White-Wilson Medical Center is a multi-specialty healthcare organization committed to providing high-quality, patient-centered care to the communities we serve.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 18 | 186 contacts → | ||||
Indirect evidence “We are the largest provider of primary health care services in Madera County and are focused on providing the best quality of health care to the members of our local communities.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 19 | 171 contacts → | ||||
Indirect evidence “HealthCARE Express was founded in January of 2006 in Texarkana, TX with our first clinic being located on Richmond Rd.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 20 | 157 contacts → | ||||
Partial evidence “Access Health Care Physicians, LLC is a multi-service medical facility.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 21 | 155 contacts → | ||||
Indirect evidence “Upland Hills Health is a community-minded healthcare system for patients in all stages of life.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 22 | 153 contacts → | ||||
Indirect evidence “At Bond Clinic, we strive to provide quality health care to Winter Haven and the surrounding region at our 9 locations.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 23 | 137 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 24 | 134 contacts → | ||||
Indirect evidence “Our primary care clinics are open seven days a week with extended hours to best serve your urgent and primary healthcare needs, when you need it.” Source: RevenueBase Database · checked Sep 17, 2026Thanks. The Data Team will review it. | |||||
| 25 | 132 contacts → | ||||
Partial evidence “Colorado Springs Health Partners is a multi-specialty practice group in Colorado with 11 clinical facilities throughout the Pikes Peak region.” Source: RevenueBase Database · checked Sep 17, 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: medical practices. 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 medical practices.
- Partial evidence
- Its own public description names part of medical practices, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name medical practices. 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 614 medical practices based in the United States
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Medical practices based in the United States at a glance
As of Sep 17, 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 614 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 medical practices, 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 “medical practices”. 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 medical practices), 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 medical practices, 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, 4,661 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.
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 medical practices, 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 medical practices are there based in the United States?
RevenueBase identified 614 medical practices 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?
Springfield Clinic, headquartered in Springfield, tops this list with the largest team on record.
Which city has the most medical practices?
New York leads with 13 headquartered companies, followed by Chicago (8) and Houston (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 4,661 verified decision-maker contacts tracked across these 614 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.