Company lists · Data refreshed September 2026
Top 25 Oncology societies worldwide
RevenueBase identified 1,751 oncology societies worldwide as of September 2026 and tracks 79,672 professional contacts across them, including 17,895 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers oncology 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 oncology 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 oncology societies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 6,380 contacts → | ||||
Indirect evidence “Você sabe a diferença entre um Cancer Center e um hospital geral?” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 3,489 contacts → | ||||
Indirect evidence “Inaugurado em 2008, o Instituto do Câncer do Estado de São Paulo (Icesp), unidade que integra o Hospital das Clínicas da Faculdade de Medicina da USP, possui contrato de gestão…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,591 contacts → | ||||
Partial evidence “Founded in 1984, Florida Cancer Specialists & Research Institute (FCS) is the largest independent medical oncology/hematology practice in the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,272 contacts → | ||||
Indirect evidence “Gustave Roussy, premier centre de lutte contre le cancer en France et en Europe, dans le TOP mondial des hôpitaux en cancérologie, constitue un pôle d’expertise global contre le…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 2,239 contacts → | ||||
Partial evidence “Every day, The US Oncology Network helps approximately 3,300 providers deliver value-based, integrated care for patients-close to home.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,580 contacts → | ||||
Indirect evidence “At Novartis, our mission is to discover new ways to improve and extend people's lives.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,517 contacts → | ||||
Indirect evidence “Het Prinses Máxima Centrum voor kinderoncologie is een uniek initiatief van ouders van kinderen met kanker en professionals in de kinderoncologie in Nederland om alle…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 868 contacts → | ||||
Partial evidence “Sarah Cannon Research Institute (SCRI) is one of the world’s leading oncology research organizations, conducting community-based clinical trials.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 825 contacts → | ||||
Partial evidence “American Oncology Institute (AOI) is the leading and fastest growing Multi disciplinary oncology network with 15 Hospitals in South Asia, blending the latest technology with…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 785 contacts → | ||||
Indirect evidence “Vi er en patientforening med tre vigtige hovedformål- Flere overlever kræft - Færre får kræft - Bedre liv med og efter kræft Det gør vi gennem- Forskning - Forebyggelse - Patient-…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 783 contacts → | ||||
Partial evidence “As a comprehensive community oncology center, NYCBS delivers world-class cancer care close to home.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 751 contacts → | ||||
Partial evidence “Founded in 1964, the American Society of Clinical Oncology (ASCO) is committed to making a world of difference in cancer care.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 748 contacts → | ||||
Partial evidence “L’Institut Català d’Oncologia (ICO) és un centre públic, dedicat exclusivament al càncer, que depèn del Departament de Salut del govern autonòmic de Catalunya (Espanya).” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 709 contacts → | ||||
Indirect evidence “VERSION FRANCAISE Centre multidisciplinaire intégré, unique en Belgique et reconnu internationalement, l’Institut Jules Bordet est un hôpital entièrement consacré aux patients…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 688 contacts → | ||||
Indirect evidence “La Sociedad de Lucha Contra el Cáncer (SOLCA) del Ecuador fue fundada el 7 de diciembre de 1951.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 630 contacts → | ||||
Partial evidence “Onco360 is recognized as one of the nation's leading independent specialty pharmacies dedicated exclusively to oncology and rare disease patients.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 563 contacts → | ||||
Indirect evidence “La misión de SOLCA Quito es conducir la lucha contra el cáncer, a través de la promoción, educación, prevención, diagnostico precoz y tratamiento oportuno, con el fin de disminuir…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 507 contacts → | ||||
Partial evidence “AON is an alliance of physicians and veteran healthcare leaders dedicated to ensuring the long-term success and viability of oncology diagnosis and treatment in community-based…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 501 contacts → | ||||
Indirect evidence “The IUCT-Oncopole, a center for care, research, and training in cancerology, mobilizes on a single site in Toulouse the expertise of professionals.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 457 contacts → | ||||
Indirect evidence “Desde 1995, a Fundação Cristiano Varella, criada por Lael Varella em memória de seu filho Cristiano, se destaca como um pilar no combate ao câncer.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 451 contacts → | ||||
Indirect evidence “Met de Nederlandse Kankerregistratie (NKR) volgt IKNL al meer dan vijfendertig jaar op landelijk niveau de zorg voor patiënten met kanker.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 404 contacts → | ||||
Partial evidence “Founded in 2007, The Oncology Institute (NASDAQ: TOI) is advancing oncology by delivering highly specialized, value-based cancer care in the community setting.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 400 contacts → | ||||
Indirect evidence “ADVANCING CANCER TREATMENT RaySearch is advancing cancer treatment through pioneering software.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 349 contacts → | ||||
Indirect evidence “Founded in 1907, the American Association for Cancer Research (AACR) is the world’s first and largest professional organization dedicated to advancing cancer research and its…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 345 contacts → | ||||
Partial evidence “The Oncology Nursing Society (ONS) is a professional association of more than members committed to promoting excellence in oncology nursing and the transformation of cancer care.” 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: oncology 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 oncology societies.
- Partial evidence
- Its own public description names part of oncology societies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name oncology 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 1,751 oncology societies worldwide
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Oncology 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 oncology 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 oncology societies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “oncology 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 oncology 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 oncology 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, 17,895 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.
Oncology societies by location
13 lists · largest firstEvery Oncology societies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Oncology societies based in the United States406
- Oncology societies based in Brazil161
- Oncology societies based in France108
- Oncology societies based in India73
- Oncology societies based in Germany66
- Oncology societies based in Italy50
- Oncology societies based in Spain47
- Oncology societies based in the Netherlands43
- Oncology societies based in the United Kingdom42
- Oncology societies based in Canada41
- Oncology societies based in Australia39
- Oncology societies based in Switzerland35
- Oncology societies based in Belgium31
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 oncology 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 oncology societies are there worldwide?
RevenueBase identified 1,751 oncology 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?
A.C.Camargo Cancer Center, headquartered in Sao Paulo, tops this list with the largest team on record.
Which country has the most oncology societies?
The United States leads with 406 companies, followed by Brazil (161) and France (108). Every oncology societies list by country and city is linked on this page.
Which city has the most oncology societies?
Sao Paulo leads with 39 headquartered companies, followed by Paris (23) and London (19).
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 17,895 verified decision-maker contacts tracked across these 1,751 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.