Company lists · Data refreshed November 2026
Top 25 Internal medicine groups worldwide
RevenueBase identified 3,356 company matches for internal medicine groups worldwide as of November 2026 and tracks 55,536 professional contacts across them, including 12,310 with verified work emails. The United States is the largest market and New York the largest hub.
This list covers company matches for internal medicine groups worldwide, 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 November 6, 2026. Country and city lists for internal medicine groups follow the table.
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.
The 25 largest internal medicine groups worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,333 contacts → | ||||
Exact match “Lahey Hospital & Medical Center, part of Beth Israel Lahey Health, is a physician-led, nonprofit, group practice.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 3,381 contacts → | ||||
Exact match “The Permanente Medical Group (TPMG) is the largest physician-led medical group in the United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 1,855 contacts → | ||||
Exact match “Envision Healthcare is a leading medical group that delivers physician and advanced practice provider services, primarily in the areas of emergency and hospitalist medicine…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 1,517 contacts → | ||||
Exact match “Are you ready to challenge the expected to deliver the extraordinary?” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 1,385 contacts → | ||||
Exact match “Established in 1994, Trinity Health IHA Medical Group is one of the largest multi-specialty medical groups in Michigan delivering more than one million patient visits each year…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 1,163 contacts → | ||||
Exact match “Piedmont HealthCare is one of the largest physician-owned and directed, multi-specialty groups in North Carolina and the Southeast regions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 1,112 contacts → | ||||
Exact match “Gastro Health is a diverse group of professionals dedicated to digestive and liver health.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 991 contacts → | ||||
Exact match “ApolloMD is a physician-led national group practice, specializing in Emergency Medicine, Hospital Medicine, Anesthesia and Radiology Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 927 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 865 contacts → | ||||
Exact match “The American College of Physicians is the largest medical specialty organization in the United States with members in more than 172 countries worldwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 761 contacts → | ||||
Exact match “We’re redefining & transforming the approach to health, the business of health, & the overall well-being of the community.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 625 contacts → | ||||
Exact match “Since 1929, Christie Clinic has been providing the people of east central Illinois with the highest quality healthcare.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 569 contacts → | ||||
Exact match “A large private multi-specialty physician group in the city of Toledo.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 475 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 · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 464 contacts → | ||||
Exact match “At Buffalo Medical Group, we offer care that goes beyond simply treating you when you’re sick.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 438 contacts → | ||||
Exact match “As one of the largest independent, multi-specialty physician groups in Middle Tennessee, Heritage Medical Associates is uniquely equipped to provide comprehensive care for you and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 436 contacts → | ||||
Exact match “RWJBarnabas Health Medical Group is a multi-specialty group practice comprised of highly trained and experienced world class primary and specialty care physicians.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 411 contacts → | ||||
Exact match “Gonzaba Medical Group’s founder, William Gonzaba, M.D, started his family practice in 1960 on South Flores Street, not far from the neighborhood where he was born and raised.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 409 contacts → | ||||
Exact match “Granger Medical Clinic is one of the largest independent medical groups in Utah.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 326 contacts → | ||||
Exact match “Our goal at Loudoun Medical Group (LMG) is to provide every single patient with top-quality medical care and personalized service.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 313 contacts → | ||||
Exact match “Longstreet Clinic is a leading-edge, private medical group located in north Georgia.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 252 contacts → | ||||
Exact match “St.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 245 contacts → | ||||
Exact match “Specialist focused Multi-Specialist Internal Medicine Group located in Cheyenne, WY.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 241 contacts → | ||||
Exact match “Founded in the 1990’s, Epic Care started as a group of board certified hematologists and oncologists based in Northern California’s East Bay area.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 239 contacts → | ||||
Exact match “The group began in 1938 with three physicians,Dr.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “internal medicine groups”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 3,356 internal medicine groups worldwide
See the full list, filter by size, metro and specialty, and access 12,310 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Internal medicine groups worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
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.
- Coverage
- Every country. Country and city lists for internal medicine groups are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “internal medicine groups” 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. 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 12,310 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 November 6, 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.
Internal medicine groups by location
6 lists · largest firstEvery Internal medicine groups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Internal medicine groups based in the United States2,196
- Internal medicine groups based in Australia113
- Internal medicine groups based in Switzerland80
- Internal medicine groups based in Canada53
Cities
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 “internal medicine groups”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many internal medicine groups are there worldwide?
RevenueBase identified 3,356 company matches for internal medicine groups worldwide as of November 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?
Lahey Hospital & Medical Center tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most internal medicine groups?
The United States leads with 2,196 companies, followed by Australia (113) and Switzerland (80). Every internal medicine groups list by country and city is linked on this page.
Which city has the most internal medicine groups?
New York leads with 43 company records, followed by Houston (38) and Chicago (18).
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 12,310 professional contacts with verified work emails tracked across these 3,356 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 November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 3,356 internal medicine groups worldwide. Start with a free account, no credit card.
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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.
More company lists
Company intelligence · public preview
Top 25 internal medicine groups worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 3,356 matching company records for internal medicine groups worldwide, with 55,536 tracked contacts and 12,310 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 internal medicine groups worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Lahey Hospital & Medical Centerlahey.orgHQ: Burlington, MA, United StatesReported employees: 5,001-10,000 | Burlington, MA, United States | 5,001-10,000 | Exact match | 4,333 contacts → |
“Lahey Hospital & Medical Center, part of Beth Israel Lahey Health, is a physician-led, nonprofit, group practice.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  The Permanente Medical Group, INCnortherncalifornia.permanente.orgHQ: Pleasanton, CA, United StatesReported employees: 10001+ | Pleasanton, CA, United States | 10001+ | Exact match | 3,381 contacts → |
“The Permanente Medical Group (TPMG) is the largest physician-led medical group in the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Envision Healthcareenvisionhealth.com HQ: Nashville, TN, United StatesReported employees: 10001+ | Nashville, TN, United States | 10001+ | Exact match | 1,855 contacts → |
“Envision Healthcare is a leading medical group that delivers physician and advanced practice provider services, primarily in the areas of emergency and hospitalist medicine…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Dupage Medical Groupdulyhealthandcare.comHQ: Downers Grove, IL, United StatesReported employees: 1,001-5,000 | Downers Grove, IL, United States | 1,001-5,000 | Exact match | 1,517 contacts → |
“Are you ready to challenge the expected to deliver the extraordinary?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  IHAihacares.comHQ: Ann Arbor, MI, United StatesReported employees: 1,001-5,000 | Ann Arbor, MI, United States | 1,001-5,000 | Exact match | 1,385 contacts → |
“Established in 1994, Trinity Health IHA Medical Group is one of the largest multi-specialty medical groups in Michigan delivering more than one million patient visits each year…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Piedmont Healthcarepiedmonthealthcare.comHQ: Statesville, NC, United StatesReported employees: 1,001-5,000 | Statesville, NC, United States | 1,001-5,000 | Exact match | 1,163 contacts → |
“Piedmont HealthCare is one of the largest physician-owned and directed, multi-specialty groups in North Carolina and the Southeast regions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Gastro Healthgastrohealth.comHQ: Miami, FL, United StatesReported employees: 1,001-5,000 | Miami, FL, United States | 1,001-5,000 | Exact match | 1,112 contacts → |
“Gastro Health is a diverse group of professionals dedicated to digestive and liver health.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Apollomdapollomd.comHQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 991 contacts → |
“ApolloMD is a physician-led national group practice, specializing in Emergency Medicine, Hospital Medicine, Anesthesia and Radiology Services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Regal Medical Groupregalmed.comHQ: Los Angeles, CA, United StatesReported employees: 1,001-5,000 | Los Angeles, CA, United States | 1,001-5,000 | Exact match | 927 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  American College Of Physiciansacponline.orgHQ: Philadelphia, DC, United StatesReported employees: 201-500 | Philadelphia, DC, United States | 201-500 | Exact match | 865 contacts → |
“The American College of Physicians is the largest medical specialty organization in the United States with members in more than 172 countries worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Crystal RUN Healthcrystalrunhealthcare.comHQ: Middletown, NY, United StatesReported employees: 1,001-5,000 | Middletown, NY, United States | 1,001-5,000 | Exact match | 761 contacts → |
“We’re redefining & transforming the approach to health, the business of health, & the overall well-being of the community.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Christie Clinicchristieclinic.comHQ: Champaign, IL, United StatesReported employees: 1,001-5,000 | Champaign, IL, United States | 1,001-5,000 | Exact match | 625 contacts → |
“Since 1929, Christie Clinic has been providing the people of east central Illinois with the highest quality healthcare.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  The Toledo Clinictoledoclinic.comHQ: Toledo, OH, United StatesReported employees: 1,001-5,000 | Toledo, OH, United States | 1,001-5,000 | Exact match | 569 contacts → |
“A large private multi-specialty physician group in the city of Toledo.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Intermed, P.Aintermed.comHQ: Portland, ME, United StatesReported employees: 501-1,000 | Portland, ME, United States | 501-1,000 | Exact match | 475 contacts → |
“InterMed is the largest physician-owned primary care practice in Maine, with 90 physicians and more than 650 non-physician employees.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Buffalo Medical Groupbuffalomedicalgroup.comHQ: Buffalo, NY, United StatesReported employees: 501-1,000 | Buffalo, NY, United States | 501-1,000 | Exact match | 464 contacts → |
“At Buffalo Medical Group, we offer care that goes beyond simply treating you when you’re sick.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Heritage Medical Associatesheritagemedical.comHQ: Nashville, TN, United StatesReported employees: 501-1,000 | Nashville, TN, United States | 501-1,000 | Exact match | 438 contacts → |
“As one of the largest independent, multi-specialty physician groups in Middle Tennessee, Heritage Medical Associates is uniquely equipped to provide comprehensive care for you and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Rwjbarnabas Health Medical Grouprwjbh.orgHQ: West Orange, NJ, United StatesReported employees: 501-1,000 | West Orange, NJ, United States | 501-1,000 | Exact match | 436 contacts → |
“RWJBarnabas Health Medical Group is a multi-specialty group practice comprised of highly trained and experienced world class primary and specialty care physicians.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Gonzaba Medical Groupgonzaba.comHQ: San Antonio, TX, United StatesReported employees: 501-1,000 | San Antonio, TX, United States | 501-1,000 | Exact match | 411 contacts → |
“Gonzaba Medical Group’s founder, William Gonzaba, M.D, started his family practice in 1960 on South Flores Street, not far from the neighborhood where he was born and raised.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Granger Medical Clinicgrangermedical.comHQ: West Valley City, UT, United StatesReported employees: 501-1,000 | West Valley City, UT, United States | 501-1,000 | Exact match | 409 contacts → |
“Granger Medical Clinic is one of the largest independent medical groups in Utah.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Loudoun Medical Group, P.Clmgdoctors.comHQ: Leesburg, VA, United StatesReported employees: 1,001-5,000 | Leesburg, VA, United States | 1,001-5,000 | Exact match | 326 contacts → |
“Our goal at Loudoun Medical Group (LMG) is to provide every single patient with top-quality medical care and personalized service.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Longstreet Cliniclongstreetclinic.comHQ: Gainesville, GA, United StatesReported employees: 501-1,000 | Gainesville, GA, United States | 501-1,000 | Exact match | 313 contacts → |
“Longstreet Clinic is a leading-edge, private medical group located in north Georgia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  St. Bernard Hospitalstbh.orgHQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 252 contacts → |
“St.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Internal Medicine Groupimgwy.comHQ: Cheyenne, WY, United StatesReported employees: 51-200 | Cheyenne, WY, United States | 51-200 | Exact match | 245 contacts → |
“Specialist focused Multi-Specialist Internal Medicine Group located in Cheyenne, WY.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Epic Careepic-care.comHQ: Antioch, CA, United StatesReported employees: 201-500 | Antioch, CA, United States | 201-500 | Exact match | 241 contacts → |
“Founded in the 1990’s, Epic Care started as a group of board certified hematologists and oncologists based in Northern California’s East Bay area.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Slocum-Dickson Medical Groupsdmg.comHQ: New Hartford, NY, United StatesReported employees: 201-500 | New Hartford, NY, United States | 201-500 | Exact match | 239 contacts → |
“The group began in 1938 with three physicians,Dr.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,356 company matches
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Internal medicine groups: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,226 records in the displayed employee bands.
130 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 3,356 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Internal medicine groups by location
6 lists · largest firstEvery Internal medicine groups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Internal medicine groups based in the United States2,196
- Internal medicine groups based in Australia113
- Internal medicine groups based in Switzerland80
- Internal medicine groups based in Canada53
Cities
Questions about this company list
What does Exact match mean for internal medicine groups?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many internal medicine groups did RevenueBase find worldwide?
The saved snapshot records 3,356 matching company records, 55,536 tracked contacts and 12,310 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 internal medicine groups worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/internal-medicine-groups.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 internal medicine groups worldwide
RevenueBase records 3,356 matching company records for internal medicine groups worldwide, with 55,536 tracked contacts and 12,310 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 internal medicine groups worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Lahey Hospital & Medical Centerlahey.org HQ: Burlington, MA, United StatesReported employees: 5,001-10,000 | Burlington, MA, United States | 5,001-10,000 | Exact match | 4,333 contacts → |
“Lahey Hospital & Medical Center, part of Beth Israel Lahey Health, is a physician-led, nonprofit, group practice.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | The Permanente Medical Group, INCnortherncalifornia.permanente.org HQ: Pleasanton, CA, United StatesReported employees: 10001+ | Pleasanton, CA, United States | 10001+ | Exact match | 3,381 contacts → |
“The Permanente Medical Group (TPMG) is the largest physician-led medical group in the United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Envision Healthcareenvisionhealth.com HQ: Nashville, TN, United StatesReported employees: 10001+ | Nashville, TN, United States | 10001+ | Exact match | 1,855 contacts → |
“Envision Healthcare is a leading medical group that delivers physician and advanced practice provider services, primarily in the areas of emergency and hospitalist medicine…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Dupage Medical Groupdulyhealthandcare.com HQ: Downers Grove, IL, United StatesReported employees: 1,001-5,000 | Downers Grove, IL, United States | 1,001-5,000 | Exact match | 1,517 contacts → |
“Are you ready to challenge the expected to deliver the extraordinary?” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | IHAihacares.com HQ: Ann Arbor, MI, United StatesReported employees: 1,001-5,000 | Ann Arbor, MI, United States | 1,001-5,000 | Exact match | 1,385 contacts → |
“Established in 1994, Trinity Health IHA Medical Group is one of the largest multi-specialty medical groups in Michigan delivering more than one million patient visits each year…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Piedmont Healthcarepiedmonthealthcare.com HQ: Statesville, NC, United StatesReported employees: 1,001-5,000 | Statesville, NC, United States | 1,001-5,000 | Exact match | 1,163 contacts → |
“Piedmont HealthCare is one of the largest physician-owned and directed, multi-specialty groups in North Carolina and the Southeast regions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Gastro Healthgastrohealth.com HQ: Miami, FL, United StatesReported employees: 1,001-5,000 | Miami, FL, United States | 1,001-5,000 | Exact match | 1,112 contacts → |
“Gastro Health is a diverse group of professionals dedicated to digestive and liver health.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Apollomdapollomd.com HQ: Atlanta, GA, United StatesReported employees: 1,001-5,000 | Atlanta, GA, United States | 1,001-5,000 | Exact match | 991 contacts → |
“ApolloMD is a physician-led national group practice, specializing in Emergency Medicine, Hospital Medicine, Anesthesia and Radiology Services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Regal Medical Groupregalmed.com HQ: Los Angeles, CA, United StatesReported employees: 1,001-5,000 | Los Angeles, CA, United States | 1,001-5,000 | Exact match | 927 contacts → |
“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 description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | American College Of Physiciansacponline.org HQ: Philadelphia, DC, United StatesReported employees: 201-500 | Philadelphia, DC, United States | 201-500 | Exact match | 865 contacts → |
“The American College of Physicians is the largest medical specialty organization in the United States with members in more than 172 countries worldwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Crystal RUN Healthcrystalrunhealthcare.com HQ: Middletown, NY, United StatesReported employees: 1,001-5,000 | Middletown, NY, United States | 1,001-5,000 | Exact match | 761 contacts → |
“We’re redefining & transforming the approach to health, the business of health, & the overall well-being of the community.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Christie Clinicchristieclinic.com HQ: Champaign, IL, United StatesReported employees: 1,001-5,000 | Champaign, IL, United States | 1,001-5,000 | Exact match | 625 contacts → |
“Since 1929, Christie Clinic has been providing the people of east central Illinois with the highest quality healthcare.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | The Toledo Clinictoledoclinic.com HQ: Toledo, OH, United StatesReported employees: 1,001-5,000 | Toledo, OH, United States | 1,001-5,000 | Exact match | 569 contacts → |
“A large private multi-specialty physician group in the city of Toledo.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Intermed, P.Aintermed.com HQ: Portland, ME, United StatesReported employees: 501-1,000 | Portland, ME, United States | 501-1,000 | Exact match | 475 contacts → |
“InterMed is the largest physician-owned primary care practice in Maine, with 90 physicians and more than 650 non-physician employees.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Buffalo Medical Groupbuffalomedicalgroup.com HQ: Buffalo, NY, United StatesReported employees: 501-1,000 | Buffalo, NY, United States | 501-1,000 | Exact match | 464 contacts → |
“At Buffalo Medical Group, we offer care that goes beyond simply treating you when you’re sick.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Heritage Medical Associatesheritagemedical.com HQ: Nashville, TN, United StatesReported employees: 501-1,000 | Nashville, TN, United States | 501-1,000 | Exact match | 438 contacts → |
“As one of the largest independent, multi-specialty physician groups in Middle Tennessee, Heritage Medical Associates is uniquely equipped to provide comprehensive care for you and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Rwjbarnabas Health Medical Grouprwjbh.org HQ: West Orange, NJ, United StatesReported employees: 501-1,000 | West Orange, NJ, United States | 501-1,000 | Exact match | 436 contacts → |
“RWJBarnabas Health Medical Group is a multi-specialty group practice comprised of highly trained and experienced world class primary and specialty care physicians.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Gonzaba Medical Groupgonzaba.com HQ: San Antonio, TX, United StatesReported employees: 501-1,000 | San Antonio, TX, United States | 501-1,000 | Exact match | 411 contacts → |
“Gonzaba Medical Group’s founder, William Gonzaba, M.D, started his family practice in 1960 on South Flores Street, not far from the neighborhood where he was born and raised.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Granger Medical Clinicgrangermedical.com HQ: West Valley City, UT, United StatesReported employees: 501-1,000 | West Valley City, UT, United States | 501-1,000 | Exact match | 409 contacts → |
“Granger Medical Clinic is one of the largest independent medical groups in Utah.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Loudoun Medical Group, P.Clmgdoctors.com HQ: Leesburg, VA, United StatesReported employees: 1,001-5,000 | Leesburg, VA, United States | 1,001-5,000 | Exact match | 326 contacts → |
“Our goal at Loudoun Medical Group (LMG) is to provide every single patient with top-quality medical care and personalized service.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Longstreet Cliniclongstreetclinic.com HQ: Gainesville, GA, United StatesReported employees: 501-1,000 | Gainesville, GA, United States | 501-1,000 | Exact match | 313 contacts → |
“Longstreet Clinic is a leading-edge, private medical group located in north Georgia.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | St. Bernard Hospitalstbh.org HQ: Chicago, IL, United StatesReported employees: 501-1,000 | Chicago, IL, United States | 501-1,000 | Exact match | 252 contacts → |
“St.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Internal Medicine Groupimgwy.com HQ: Cheyenne, WY, United StatesReported employees: 51-200 | Cheyenne, WY, United States | 51-200 | Exact match | 245 contacts → |
“Specialist focused Multi-Specialist Internal Medicine Group located in Cheyenne, WY.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Epic Careepic-care.com HQ: Antioch, CA, United StatesReported employees: 201-500 | Antioch, CA, United States | 201-500 | Exact match | 241 contacts → |
“Founded in the 1990’s, Epic Care started as a group of board certified hematologists and oncologists based in Northern California’s East Bay area.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Slocum-Dickson Medical Groupsdmg.com HQ: New Hartford, NY, United StatesReported employees: 201-500 | New Hartford, NY, United States | 201-500 | Exact match | 239 contacts → |
“The group began in 1938 with three physicians,Dr.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 3,356 company matches
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Internal medicine groups: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
3,226 records in the displayed employee bands.
130 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 3,356 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 6, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Internal medicine groups by location
6 lists · largest firstEvery Internal medicine groups list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Internal medicine groups based in the United States2,196
- Internal medicine groups based in Australia113
- Internal medicine groups based in Switzerland80
- Internal medicine groups based in Canada53
Cities
Questions about this company list
What does Exact match mean for internal medicine groups?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many internal medicine groups did RevenueBase find worldwide?
The saved snapshot records 3,356 matching company records, 55,536 tracked contacts and 12,310 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 6, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 internal medicine groups worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/internal-medicine-groups.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗