Company lists · Data refreshed September 2026
Top 25 Internal medicine societies worldwide
RevenueBase identified 206 internal medicine societies worldwide as of September 2026 and tracks 6,684 professional contacts across them, including 2,216 with verified work emails. The United States is the largest market and Berlin the largest hub.
This list covers internal medicine societies worldwide, 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 20, 2026. Country and city lists for internal medicine societies follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest internal medicine societies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,887 contacts → | ||||
Indirect evidence “The American Medical Association (AMA) is the largest and most influential organization representing the voices of hundreds of thousands of physicians, residents and medical…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 869 contacts → | ||||
Indirect evidence “The American College of Physicians is the largest medical specialty organization in the United States with members in more than 172 countries worldwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 572 contacts → | ||||
Indirect evidence “Our vision: Advancing learning for specialist physicians to deliver the best health care for all.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 511 contacts → | ||||
Indirect evidence “At Doctors of BC, we make a meaningful difference in improving health care for British Columbians by working alongside our physician members to achieve quality patient care…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 173 contacts → | ||||
Indirect evidence “The California Medical Association is a professional association representing more than California physicians (#CMAdocs) in all medical specialties and modes of practice.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 165 contacts → | ||||
Partial evidence “The Society of Hospital Medicine (SHM) exists to promote exceptional care for hospitalized patients.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 108 contacts → | ||||
Indirect evidence “The Society of Interventional Radiology is a national organization of physicians, trainees, students, scientists, clinical associates and other allied health professionals…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 101 contacts → | ||||
Indirect evidence “La Sociedad Argentina de Terapia Intensiva (SATI) fue fundada el 22 de Diciembre de 1972.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 91 contacts → | ||||
Indirect evidence “PAMED helps Pennsylvania's physicians put patients over paperwork by advocating, educating, and navigating on their behalf.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 84 contacts → | ||||
Indirect evidence “Creemos en la Educación Médica Continua.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 65 contacts → | ||||
Partial evidence “De NIV is de wetenschappelijke vereniging staat voor 3.700 internisten (in opleiding) en is het aanspreekpunt voor alle beroepsinhoudelijke en maatschappelijke aangelegenheden met…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 63 contacts → | ||||
Indirect evidence “The Ohio State Medical Association (OSMA) is a professional association representing nearly physicians, residents and medical students in the state of Ohio on issues including…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 52 contacts → | ||||
Strong evidence “We create best-in-class learning tools to help you excel in medical school, ace your internal medicine or pediatrics boards, and maintain your certification throughout your career.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 52 contacts → | ||||
Indirect evidence “ISMA is the largest physician membership organization in Indiana, proudly serving physicians, medical students and the patients they care for since 1849.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 50 contacts → | ||||
Strong evidence “The Society of General Internal Medicine is a member-based international medical association of 3,300 of the world's leading academic general internists, who are dedicated to…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 48 contacts → | ||||
Strong evidence “A SPMI, Sociedade Portuguesa de Medicina Interna, comemorou em 2016, 65 anos.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 44 contacts → | ||||
Partial evidence “The PCP is the umbrella organization of internists in the Philippines and was organized in 1953.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 37 contacts → | ||||
Strong evidence “AAIM is a consortium of five academically focused specialty organizations representing departments of internal medicine at medical schools and teaching hospitals in the United…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 30 contacts → | ||||
Indirect evidence “The Minnesota Medical Association is a non-profit professional association representing physicians, residents and medical students.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 30 contacts → | ||||
Strong evidence “The Genesis Hospitalist Medical Group is a network of private practice internal medicine physicians at Cedars-Sinai Medical Center in West Hollywood, CA.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 29 contacts → | ||||
Indirect evidence “Suomen Lääkäriliitto on akavalainen ammattijärjestö, johon lähes kaikki maassa toimivat lääkärit kuuluvat.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 24 contacts → | ||||
Partial evidence “FADOI è la Federazione delle Associazioni dei Dirigenti Ospedalieri Internisti che nasce nel 1995 con l’intento di promuovere lo sviluppo delle conoscenze medico-scientifiche e…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 22 contacts → | ||||
Indirect evidence “The Los Angeles County Medical Association is an organization of dedicated physicians who advocate quality healthcare for all patients and serve the professional needs of its…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 21 contacts → | ||||
Partial evidence “Verband Schweizerischer Assistenz- und Oberärztinnen und -ärzte | Association suisse des médecins assistant(e)s et chef(fe)s de clinique | Associazione dei medici assistenti e…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 21 contacts → | ||||
Indirect evidence “The San Diego County Medical Society (SDCMS) is a non-profit organization founded in 1870, chartered by the California Medical Association (CMA), and affiliated with the American…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: internal medicine societies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names internal medicine societies.
- Partial evidence
- Its own public description names part of internal medicine societies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name internal medicine societies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 206 internal medicine societies worldwide
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Internal medicine societies worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 internal medicine societies, 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.
- Coverage
- Every country. Country and city lists for internal medicine societies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “internal medicine societies”. 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 internal medicine societies), 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 internal medicine societies, and records with no verified work email.
- 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, 2,216 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 20, 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.
Internal medicine societies by location
1 lists · largest firstEvery Internal medicine societies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 internal medicine societies, 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 internal medicine societies are there worldwide?
RevenueBase identified 206 internal medicine societies worldwide 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?
American Medical Association, headquartered in Chicago, tops this list with the largest team on record.
Which country has the most internal medicine societies?
The United States leads with 71 companies. Every internal medicine societies list by country and city is linked on this page.
Which city has the most internal medicine societies?
Berlin leads with 4 headquartered companies, followed by Alexandria (3) and Bern (3).
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 2,216 verified decision-maker contacts tracked across these 206 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 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 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.