Company lists · Data refreshed September 2026

Top 25 Primary care clinics based in the United States

RevenueBase identified 1,457 company matches for primary care clinics associated with the United States as of September 2026 and tracks 35,105 professional contacts across them, including 7,903 with verified work emails. Houston is the largest hub.

This list covers company matches for primary care clinics associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
1,457Companies
35,105Contacts tracked
7,903Verified emails
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The 25 largest primary care clinics based in the United States

Ranked by team size
Top 25 of 1,457 company matches for primary care clinics based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSpringfield, IL, United StatesHQ recorded Sep 20, 20261,001-5,0001,581 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchRancho Cordova, CA, United StatesHQ recorded Sep 20, 20261,001-5,0001,076 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchBirmingham, AL, United StatesHQ recorded Sep 20, 20261,001-5,0001,065 contacts →

Exact match

“Starting with a single location in Alabama in 1982, American Family Care (AFC) has pioneered the concept of non–emergency room urgent care.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchLakeland, FL, United StatesHQ recorded Sep 20, 20261,001-5,0001,046 contacts →

Exact match

“Watson Clinic is one of the largest multispecialty medical clinics in Florida.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchMiami, FL, United StatesHQ recorded Sep 20, 20261,001-5,000974 contacts →

Exact match

“We’re transforming primary health care by improving the health of our patients.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchHattiesburg, MS, United StatesHQ recorded Sep 20, 20261,001-5,000932 contacts →

Exact match

“Hattiesburg Clinic’s mission as a group practice is to provide high quality, patient-centered health care in an efficient and cost-effective manner.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchLos Angeles, CA, United StatesHQ recorded Sep 20, 20261,001-5,000840 contacts →

Exact match

“Regal Medical Group, Lakeside Community Healthcare, ADOC Medical Group, and Community Surgery Center of Glendale – part of the Heritage Provider Network – is recognized as one of…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchZephyrhills, FL, United StatesHQ recorded Sep 20, 20261,001-5,000818 contacts →

Exact match

“Florida Medical Clinic Orlando Health is a multi-specialty clinic that provides area residents with a resource for the latest advances in patient care.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchAmsterdam, NY, United StatesHQ recorded Sep 20, 20261,001-5,000738 contacts →

Exact match

“St.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchAugusta, AR, United StatesHQ recorded Sep 20, 20261,001-5,000621 contacts →

Exact match

“With a focus on customer health, community health, employee health, and organizational health, our mission of “health for all” is at the core of everything we do.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchTigard, OR, United StatesHQ recorded Sep 20, 2026501-1,000514 contacts →

Exact match

“Founded in 2006 by two doctors and a belief that everyone deserves better healthcare, we opened the first ZoomCare clinic outside of Portland, Oregon, on the second floor of a…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchChickasha, OK, United StatesHQ recorded Sep 20, 2026201-500500 contacts →

Exact match

“Grady Memorial Hospital is a community-focused healthcare system dedicated to providing high-quality, compassionate care close to home in Chickasha, Oklahoma, and the surrounding…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchPortland, ME, United StatesHQ recorded Sep 20, 2026501-1,000455 contacts →

Exact match

“InterMed is the largest physician-owned primary care practice in Maine, with 90 physicians and more than 650 non-physician employees.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchBradenton, FL, United StatesHQ recorded Sep 20, 2026501-1,000411 contacts →

Exact match

“MCR Health, Inc is a private, not-for-profit medical group providing family practice, pediatrics, OB/GYN, behavioral health, vision, dental and many other services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchGastonia, NC, United StatesHQ recorded Sep 20, 20261,001-5,000395 contacts →

Exact match

“Our Mission | Kintegra Health is a community sponsored, family-centered provider of health care, health education and preventive care services without regard for the ability to…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchHillsboro, OR, United StatesHQ recorded Sep 20, 20261,001-5,000372 contacts →

Exact match

“For more than a century, Hillsboro Medical Center has ensured that the people in our region have access to quality health care.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchSikeston, MO, United StatesHQ recorded Sep 20, 2026501-1,000334 contacts →

Exact match

“Missouri Delta Medical Center has been providing comprehensive medical care to the people of Southeast Missouri since 1948.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchOswego, NY, United StatesHQ recorded Sep 20, 20261,001-5,000315 contacts →

Exact match

“Oswego Health’s team off physicians, nurses, staff, and administrators take great pride in their role as leaders in healthcare in this community.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchGarden City, ID, United StatesHQ recorded Sep 20, 2026501-1,000309 contacts →

Exact match

“At Primary Health Medical Group, we're committed to providing our patients with high-quality, comprehensive, convenient and friendly urgent care and family medicine services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchFort Worth, TX, United StatesHQ recorded Sep 20, 2026201-500300 contacts →

Exact match

“TotalCare is a family-owned, health-focused company in North Texas.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchGravette, AR, United StatesHQ recorded Sep 20, 2026501-1,000256 contacts →

Exact match

“Ozarks Community Hospital is a bi-state safety-net healthcare provider headquartered in Gravette, Arkansas, serving both urban and rural communities throughout the Ozarks.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchProvidence, RI, United StatesHQ recorded Sep 20, 2026501-1,000236 contacts →

Exact match

“Established in 1968, we are the largest primary health care provider in Providence and treat patients regardless of their ability to pay.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchSan Antonio, TX, United StatesHQ recorded Sep 20, 2026201-500235 contacts →

Exact match

“Texas MedClinic Urgent Care is now CareNow Urgent Care/HCA Healthcare.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchWinter Haven, FL, United StatesHQ recorded Sep 20, 2026501-1,000210 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchFort Walton Beach, FL, United StatesHQ recorded Sep 20, 2026201-500208 contacts →

Exact match

“White-Wilson Medical Center is a multi-specialty healthcare organization committed to providing high-quality, patient-centered care to the communities we serve.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 1,457 primary care clinics based in the United States

See the full list, filter by size, metro and specialty, and access 7,903 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Primary care clinics based in the United States at a glance

As of Sep 20, 2026
22.5%Verified-email coverage
24.1Average contacts per company
11-50Median size (employees)
1.9%Largest-city concentration · Houston
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
692
11-50
467
51-200
147
201-500
84
501-1,000
30
1,001-5,000
16
10001+
3

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 1,457 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “primary care clinics” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,903 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “primary care clinics”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many primary care clinics are there based in the United States?

RevenueBase identified 1,457 company matches for primary care clinics associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Springfield Clinic tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most primary care clinics?

Houston leads with 28 company records, followed by San Antonio (14) and Dallas (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,903 professional contacts with verified work emails tracked across these 1,457 companies; direct dials are available where recorded.

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 SmartSearch, 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.