Company lists · Data refreshed September 2026

Top 25 Specialty clinics based in the United States

RevenueBase identified 341 specialty clinics headquartered in the United States as of September 2026 and tracks 12,297 professional contacts across them, including 2,693 with verified work emails. Portland is the largest hub.

This list covers specialty clinics 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 22, 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 22, 2026 86% judged on-target in blind review
341Companies
12,297Contacts tracked
2,693Verified emails
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The 25 largest specialty clinics based in the United States

Ranked by team size
Top 25 of 341 specialty clinics based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to specialty clinics: 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
1Partial evidenceLakeland, FL, United StatesHQ checked Sep 22, 20261,001-5,0001,046 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
2Strong evidenceSeattle, WA, United StatesHQ checked Sep 22, 2026501-1,000860 contacts →

Strong evidence

“The Polyclinic is one of the largest, independent multi-specialty clinics in the Puget Sound area, with more than 170 primary care and specialty physicians in most areas of…”

Source: RevenueBase Database · checked Sep 22, 2026
3Strong evidenceZephyrhills, FL, United StatesHQ checked Sep 22, 20261,001-5,000818 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 22, 2026
4Indirect evidenceLayton, UT, United StatesHQ checked Sep 22, 20261,001-5,000481 contacts →

Indirect evidence

“Founded by Dr.”

Source: RevenueBase Database · checked Sep 22, 2026
5Indirect evidenceMilton, MA, United StatesHQ checked Sep 22, 2026501-1,000449 contacts →

Indirect evidence

“Beth Israel Deaconess Milton (BID Milton) is an 100-bed community hospital located in Milton, MA.”

Source: RevenueBase Database · checked Sep 22, 2026
6Strong evidenceGreen Bay, WI, United StatesHQ checked Sep 22, 2026501-1,000437 contacts →

Strong evidence

“BayCare Clinic is the largest physician-owned specialty-care clinic serving 13 regional communities in northeastern Wisconsin and Michigan’s Upper Peninsula.”

Source: RevenueBase Database · checked Sep 22, 2026
7Partial evidenceRocky Hill, CT, United StatesHQ checked Sep 22, 2026501-1,000367 contacts →

Partial evidence

“Starling Physicians has over 300 providers who deliver care across 27 medical specialties in 30 convenient locations.”

Source: RevenueBase Database · checked Sep 22, 2026
8Strong evidenceGrand Rapids, MN, United StatesHQ checked Sep 22, 2026501-1,000324 contacts →

Strong evidence

“Grand Itasca Clinic & Hospital, part of Fairview Health Services, is a multi-specialty integrated clinic and hospital located in Grand Rapids, MN.”

Source: RevenueBase Database · checked Sep 22, 2026
9Strong evidenceMurfreesboro, TN, United StatesHQ checked Sep 22, 2026501-1,000216 contacts →

Strong evidence

“Murfreesboro Medical Clinic & SurgiCenter is a multi-specialty, physician-owned clinic, offering over 20 departments and 100+ physicians.”

Source: RevenueBase Database · checked Sep 22, 2026
10Indirect evidencePoughkeepsie, NY, United StatesHQ checked Sep 22, 2026501-1,000209 contacts →

Indirect evidence

“We provide patients with in-depth and compassionate care to treat the whole you in the fields of urology, gynecology, gastroenterology, rheumatology, cardiology, dermatology…”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidencePinehurst, NC, United StatesHQ checked Sep 22, 2026501-1,000175 contacts →

Indirect evidence

“In 1946, physicians Clement R.”

Source: RevenueBase Database · checked Sep 22, 2026
12Indirect evidenceClarksville, TN, United StatesHQ checked Sep 22, 2026201-500175 contacts →

Indirect evidence

“Premier Medical Group is Clarksville’s hometown healthcare choice.”

Source: RevenueBase Database · checked Sep 22, 2026
13Indirect evidenceCoburg, OR, United StatesHQ checked Sep 22, 2026201-500139 contacts →

Indirect evidence

“Founded in 2008, BestMed formerly known as Nova Health, is a leading provider of Urgent Care and Primary Care services in the Western United States.”

Source: RevenueBase Database · checked Sep 22, 2026
14Strong evidenceSalem, OR, United StatesHQ checked Sep 22, 2026501-1,000134 contacts →

Strong evidence

“Salem Clinic is a physician and surgeon owned multi-specialty medical clinic.”

Source: RevenueBase Database · checked Sep 22, 2026
15Indirect evidenceDedham, MA, United StatesHQ checked Sep 22, 20265,001-10,000128 contacts →

Indirect evidence

“Atrius Health, Inc.”

Source: RevenueBase Database · checked Sep 22, 2026
16Partial evidenceDavie, FL, United StatesHQ checked Sep 22, 2026201-500126 contacts →

Partial evidence

“AssociatesMD is one of the largest, fastest-growing non-institutional multi-specialty practices in Florida.”

Source: RevenueBase Database · checked Sep 22, 2026
17Indirect evidenceHudson, WI, United StatesHQ checked Sep 22, 2026201-500120 contacts →

Indirect evidence

“Hudson Physicians is caring for our community.”

Source: RevenueBase Database · checked Sep 22, 2026
18Partial evidenceWailuku, HI, United StatesHQ checked Sep 22, 2026201-500101 contacts →

Partial evidence

“Maui Medical Group is a multi-specialty healthcare provider that provides healthcare services to the community of Maui.”

Source: RevenueBase Database · checked Sep 22, 2026
19Partial evidenceLibertyville, IL, United StatesHQ checked Sep 22, 202651-20079 contacts →

Partial evidence

“Mobile Therapy Centers of America, LLC (MTC) is a Multidisciplinary Clinic providing ABA Therapy, Speech Therapy, Occupational Therapy, Behavioral Therapy, Feeding Therapy and…”

Source: RevenueBase Database · checked Sep 22, 2026
20Partial evidenceLawrenceville, GA, United StatesHQ checked Sep 22, 202651-20077 contacts →

Partial evidence

“With 17 convenient locations across the Atlanta suburbs of Gwinnett County and North Fulton County, Gwinnett Clinic has served the area since 1983.”

Source: RevenueBase Database · checked Sep 22, 2026
21Strong evidenceYoungstown, OH, United StatesHQ checked Sep 22, 202651-20070 contacts →

Strong evidence

“QUICKmed is a locally owned and operated urgent cares, primary cares, and specialty clinics.”

Source: RevenueBase Database · checked Sep 22, 2026
22Partial evidenceAurora, CO, United StatesHQ checked Sep 22, 202651-20069 contacts →

Partial evidence

“MedNOW Clinics has four locations: Aurora, Denver, Lakewood, and Frisco.”

Source: RevenueBase Database · checked Sep 22, 2026
23Strong evidenceWinter Haven, FL, United StatesHQ checked Sep 22, 2026201-50068 contacts →

Strong evidence

“Gessler Clinic is a multi-specialty medical clinic providing excellence in medical care for over 60 years.”

Source: RevenueBase Database · checked Sep 22, 2026
24Strong evidenceTampa Bay, FL, United StatesHQ checked Sep 22, 202651-20064 contacts →

Strong evidence

“Ethos Health Group is a multi-specialty clinic focusing on personal injury with an emphasis on traumatic brain injury diagnostics and rehab, knee pain and neuropathy.”

Source: RevenueBase Database · checked Sep 22, 2026
25Strong evidenceTucson, AZ, United StatesHQ checked Sep 22, 202651-20063 contacts →

Strong evidence

“The Children’s Clinics is a unique medical facility with more than 25 medical and dental specialty clinics, primary care and therapy services all under one roof.”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 25 of 341 specialty clinics based in the United States

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Specialty clinics based in the United States at a glance

As of Sep 22, 2026
21.9%Verified-email coverage
36.1Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Portland
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
124
11-50
100
51-200
66
201-500
23
501-1,000
15
1,001-5,000
7
5,001-10,000
1

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 341 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 specialty clinics, 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 “specialty clinics”. 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 specialty clinics), 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 specialty clinics, 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, 2,693 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 22, 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 specialty clinics, 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 specialty clinics are there based in the United States?

RevenueBase identified 341 specialty clinics 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?

Watson Clinic LLP, headquartered in Lakeland, tops this list with the largest team on record.

Which city has the most specialty clinics?

Portland leads with 6 headquartered companies, followed by New York (4) and Orlando (4).

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 2,693 verified decision-maker contacts tracked across these 341 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 22, 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.