Company lists · Data refreshed November 2026

Top 25 Medical oncology groups worldwide

RevenueBase identified 1,589 company matches for medical oncology groups worldwide as of November 2026 and tracks 76,005 professional contacts across them, including 14,289 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for medical oncology 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 medical oncology 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
1,589Companies
76,005Contacts tracked
14,289Verified emails
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The 25 largest medical oncology groups worldwide

Ranked by team size
Top 25 of 1,589 company matches for medical oncology groups worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchSão Paulo, BrazilHQ recorded Nov 6, 20265,001-10,0006,836 contacts →

Exact match

“Você sabe a diferença entre um Cancer Center e um hospital geral?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchFort Myers, FL, United StatesHQ recorded Nov 6, 20261,001-5,0002,714 contacts →

Exact match

“Founded in 1984, Florida Cancer Specialists & Research Institute (FCS) is the largest independent medical oncology/hematology practice in the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchAbu Dhabi, United Arab EmiratesHQ recorded Nov 6, 20261,001-5,0001,812 contacts →

Exact match

“Burjeel Medical City is the largest medical care facility under the banner of Burjeel Holdings.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchBasel, SwitzerlandHQ recorded Nov 6, 202610001+1,585 contacts →

Exact match

“At Novartis, our mission is to discover new ways to improve and extend people's lives.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBrisbane, AustraliaHQ recorded Nov 6, 20261,001-5,0001,559 contacts →

Exact match

“Icon Group is a leading integrated healthcare provider with global reach across Australia, New Zealand, ASEAN, the United Kingdom and Germany.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchNashville, TN, United StatesHQ recorded Nov 6, 2026501-1,000948 contacts →

Exact match

“Sarah Cannon Research Institute (SCRI) is one of the world’s leading oncology research organizations conducting community-based clinical trials.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchRio De Janeiro, BrazilHQ recorded Nov 6, 20261,001-5,000840 contacts →

Exact match

“Fundada em 2011, a Oncologia D’Or é composta por clínicas focadas no diagnóstico e tratamento do câncer e de doenças hematológicas, com padrão de qualidade reconhecido…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchPort Jefferson Station, NY, United StatesHQ recorded Nov 6, 20261,001-5,000816 contacts →

Exact match

“As a comprehensive community oncology center, NYCBS delivers world-class cancer care close to home.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchAlexandria, VA, United StatesHQ recorded Nov 6, 2026201-500795 contacts →

Exact match

“Founded in 1964, the American Society of Clinical Oncology (ASCO) is committed to making a world of difference in cancer care.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAnderlecht, BelgiumHQ recorded Nov 6, 20261,001-5,000741 contacts →

Exact match

“VERSION FRANCAISE Centre multidisciplinaire intégré, unique en Belgique et reconnu internationalement, l’Institut Jules Bordet est un hôpital entièrement consacré aux patients…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchSão Paulo, BrazilHQ recorded Nov 6, 20261,001-5,000738 contacts →

Exact match

“Fundada em 1.968, o IBCC Oncologia é conhecida por ser um Centro de Tratamento Oncológico de alta complexidade e possuir um Centro de Pesquisa Clínica com mais de 130 estudos…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchLouisville, AZ, United StatesHQ recorded Nov 6, 2026501-1,000714 contacts →

Exact match

“Onco360 is recognized as one of the nation's leading independent specialty pharmacies dedicated exclusively to oncology and rare disease patients.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchLittle Rock, AR, United StatesHQ recorded Nov 6, 2026501-1,000640 contacts →

Exact match

“CARTI is a not-for-profit, multidisciplinary cancer care provider offering leading-edge medical, radiation and surgical oncology, interventional radiology, as well as an array of…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchFort Myers, FL, United StatesHQ recorded Nov 6, 20261,001-5,000553 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchBangalore, IndiaHQ recorded Nov 6, 2026501-1,000553 contacts →

Exact match

“Welcome to Cytecare Hospitals, the leading patient-centric healthcare provider in Bangalore, India.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchPereira, ColombiaHQ recorded Nov 6, 2026501-1,000394 contacts →

Exact match

“Somos la institución de mayor integralidad en la atención del paciente oncológico en el Eje Cafetero colombiano.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchMiami, FL, United StatesHQ recorded Nov 6, 20261,001-5,000354 contacts →

Exact match

“Miami Cancer Institute at Baptist Health South Florida is a next-generation cancer treatment destination known for its leading clinical care and research, compassionate patient…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLugano, SwitzerlandHQ recorded Nov 6, 202651-200334 contacts →

Exact match

“Representing over members globally, ESMO is a reference for oncology education and information.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchUnited StatesHQ recorded Nov 6, 2026501-1,000318 contacts →

Exact match

“Georgia Cancer Specialists is a Top 10 private cancer practice in the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchGoiânia, BrazilHQ recorded Nov 6, 2026201-500316 contacts →

Exact match

“O INGOH é um lugar onde cada vida conta.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchChandler, AZ, United StatesHQ recorded Nov 6, 2026501-1,000315 contacts →

Exact match

“Ironwood Cancer & Research Centers are a group of community-based centers strategically located throughout the Metro Phoenix area.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchChicago, IL, United StatesHQ recorded Nov 6, 2026201-500291 contacts →

Exact match

“Vaniam Group is the integrated oncology organization built for what’s next, built on twenty years of scientific depth, sustained engagement across the oncology community, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500290 contacts →

Exact match

“Oncology Consultants has been a premiere adult medical oncology and hematology practice in Houston, TX since 1982.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchCerritos, CA, United StatesHQ recorded Nov 6, 2026501-1,000289 contacts →

Exact match

“Founded in 2007, The Oncology Institute of Hope and Innovation (TOI) is advancing oncology by delivering highly specialized, value-based cancer care in the community setting.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchUnited StatesHQ recorded Nov 6, 2026201-500282 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 1,589 medical oncology groups worldwide

See the full list, filter by size, metro and specialty, and access 14,289 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Medical oncology groups worldwide at a glance

As of Nov 6, 2026
18.8%Verified-email coverage
47.8Average contacts per company
11-50Median size (employees)
1.8%Largest-city concentration · Sao Paulo
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
499
11-50
505
51-200
298
201-500
127
501-1,000
69
1,001-5,000
42
5,001-10,000
20
10001+
6

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 medical oncology groups are linked below.
What qualifies
Company records worldwide whose business descriptions match “medical oncology 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 14,289 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.

Medical oncology groups by location

7 lists · largest first

Every Medical oncology groups 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 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 “medical oncology groups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many medical oncology groups are there worldwide?

RevenueBase identified 1,589 company matches for medical oncology 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?

A.C.Camargo Cancer Center tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most medical oncology groups?

The United States leads with 517 companies, followed by Brazil (227) and India (122). Every medical oncology groups list by country and city is linked on this page.

Which city has the most medical oncology groups?

Sao Paulo leads with 29 company records, followed by Ahmedabad (13) and Bangalore (11).

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 14,289 professional contacts with verified work emails tracked across these 1,589 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.

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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.