Company lists · Data refreshed October 2026

Top 25 Membership-based medical practices based in the United States

RevenueBase identified 1,215 company matches for membership-based medical practices associated with the United States as of October 2026 and tracks 36,266 professional contacts across them, including 15,026 with verified work emails. Austin is the largest hub.

This list covers company matches for membership-based medical practices 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 October 18, 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 Oct 18, 2026 How this list was built
1,215Companies
36,266Contacts tracked
15,026Verified emails
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The 25 largest membership-based medical practices based in the United States

Ranked by team size
Top 25 of 1,215 company matches for membership-based medical practices based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 18, 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 matchChicago, IL, United StatesHQ recorded Oct 18, 20265,001-10,0005,013 contacts →

Exact match

“Oak Street Health is a network of value-based primary care centers serving older adults on Medicare.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
2Exact matchSan Francisco, CA, United StatesHQ recorded Oct 18, 20261,001-5,0003,512 contacts →

Exact match

“One Medical challenges the notion that delivering high-quality, accessible health care is unachievable and prohibitively expensive.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
3Exact matchMiami Gardens, FL, United StatesHQ recorded Oct 18, 20261,001-5,0002,346 contacts →

Exact match

“We’re on a mission.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
4Exact matchNewton, MA, United StatesHQ recorded Oct 18, 20265,001-10,0001,909 contacts →

Exact match

“Atrius Health, an innovative healthcare leader, delivers an effective system of connected care for adult and pediatric patients at 30 medical practice locations in eastern…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
5Exact matchFort Myers, FL, United StatesHQ recorded Oct 18, 20261,001-5,0001,266 contacts →

Exact match

“Founded in Port Charlotte, Florida, in 2008, and now headquartered in Fort Myers, Millennium Physician Group is one of the largest comprehensive physician-led groups with more…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
6Exact matchVancouver, WA, United StatesHQ recorded Oct 18, 20261,001-5,000972 contacts →

Exact match

“We know it can feel like modern technology has pushed healthcare to the point where the word “care” doesn’t mean much anymore.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
7Exact matchHattiesburg, MS, United StatesHQ recorded Oct 18, 20261,001-5,000937 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 · Oct 18, 2026 · View company records in RevenueBase
8Exact matchNashville, TN, United StatesHQ recorded Oct 18, 20261,001-5,000935 contacts →

Exact match

“We’re passionate about caring for older adults by providing top-notch primary care and united by the belief that caring has the power to change everything for our members.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
9Exact matchSan Clemente, CA, United StatesHQ recorded Oct 18, 20261,001-5,000904 contacts →

Exact match

“Crossover Health is a healthcare service provider that delivers in-person and virtual Advanced Primary Care.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
10Exact matchMadison, United StatesHQ recorded Oct 18, 2026501-1,000500 contacts →

Exact match

“Group Health Cooperative of South Central Wisconsin (GHC-SCW) is a not-for-profit managed health care organization that provides the entire spectrum of health care services…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
11Exact matchUnited StatesHQ recorded Oct 18, 20261,001-5,000479 contacts →

Exact match

“One mission, 100 healthy years.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
12Exact matchDurham, NC, United StatesHQ recorded Oct 18, 2026501-1,000432 contacts →

Exact match

“Since 2008, Avance Care has been an innovative primary care provider offering convenient, cost effective health care services.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
13Exact matchDurham, NC, United StatesHQ recorded Oct 18, 202610001+363 contacts →

Exact match

“Visit our main page: Duke University Health System”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Oct 18, 2026201-500330 contacts →

Exact match

“Galileo is a team-based medical practice working to improve the quality and affordability of health care for all.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
15Exact matchThe Villages, FL, United StatesHQ recorded Oct 18, 2026501-1,000315 contacts →

Exact match

“The Villages Health (soon becoming CenterWell Senior Primary Care) offers a revolutionary style of care that puts the patient at the center of their own well being!”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
16Exact matchCharlotte, NC, United StatesHQ recorded Oct 18, 2026201-500288 contacts →

Exact match

“As an independent practice, the difference is personal.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
17Exact matchProvidence, RI, United StatesHQ recorded Oct 18, 2026501-1,000258 contacts →

Exact match

“A member of the Lifespan health system, Coastal Medical is a primary care driven practice serving over patients with a team of 150 clinicians located in medical offices across…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
18Exact matchSan Francisco, CA, United StatesHQ recorded Oct 18, 202651-200240 contacts →

Exact match

“Through unparalleled concierge care, Private Medical optimizes members' present health and oversees their future well-being.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
19Exact matchAustin, TX, United StatesHQ recorded Oct 18, 2026201-500237 contacts →

Exact match

“Shouldn’t health coverage… keep people healthy?”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
20Exact matchTampa, FL, United StatesHQ recorded Oct 18, 2026501-1,000236 contacts →

Exact match

“The MaxHealth Network is a network of primary care facilities for adults and seniors with over 50 locations throughout Florida.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
21Exact matchMiami, United StatesHQ recorded Oct 18, 2026201-500232 contacts →

Exact match

“Centrum Health is redefining primary care with a patient-first, value-based approach that removes traditional barriers to access.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
22Exact matchSandy, UT, United StatesHQ recorded Oct 18, 2026201-500210 contacts →

Exact match

“When it comes to care, you really can have it all: improved health outcomes, a more human experience for members and providers, and significantly reduced overall costs.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
23Exact matchGreensboro, NC, United StatesHQ recorded Oct 18, 2026201-500194 contacts →

Exact match

“Nationally Recognized Patient Medical Home in Greensboro, NC If having a lifetime of good health is important to you and your loved ones, you owe it to yourself to learn more…”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
24Exact matchCharlotte, NC, United StatesHQ recorded Oct 18, 2026n/a184 contacts →

Exact match

“Signature Healthcare, PLLC provides world-class primary care concierge medicine in the Southpark area of Charlotte, NC.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase
25Exact matchMiami, FL, United StatesHQ recorded Oct 18, 2026501-1,000174 contacts →

Exact match

“At Claremedica, we've personalized primary care for healthier, happier, and fuller lives.”

Recorded in the RevenueBase company graph · Oct 18, 2026 · View company records in RevenueBase

Showing 25 of 1,215 membership-based medical practices based in the United States

See the full list, filter by size, metro and specialty, and access 15,026 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Membership-based medical practices based in the United States at a glance

As of Oct 18, 2026
41.4%Verified-email coverage
29.8Average contacts per company
1-10Median size (employees)
1.7%Largest-city concentration · Austin
Oct 18, 2026Page data refreshed

Companies by employee count

1-10
821
11-50
252
51-200
74
201-500
32
501-1,000
11
1,001-5,000
12
5,001-10,000
3
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 1,215 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 “membership-based medical practices” 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 15,026 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 October 18, 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 “membership-based medical practices”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many membership-based medical practices are there based in the United States?

RevenueBase identified 1,215 company matches for membership-based medical practices associated with the United States as of October 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?

OAK Street Health, Part Of CVS Health tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most membership-based medical practices?

Austin leads with 21 company records, followed by New York (15) and Houston (13).

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 15,026 professional contacts with verified work emails tracked across these 1,215 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 October 18, 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.