Company lists · Data refreshed September 2026

Top 25 Oncology clinics worldwide

RevenueBase identified 2,075 company matches for oncology clinics worldwide as of September 2026 and tracks 116,869 professional contacts across them, including 21,578 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for oncology clinics 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 September 20, 2026. Country and city lists for oncology clinics 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 Sep 20, 2026 How this list was built
2,075Companies
116,869Contacts tracked
21,578Verified emails
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The 25 largest oncology clinics worldwide

Ranked by team size
Top 25 of 2,075 company matches for oncology clinics worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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 matchBoston, MA, United StatesHQ recorded Sep 20, 20261,001-5,0008,287 contacts →

Exact match

“Dana-Farber Cancer Institute is committed to providing expert, compassionate care to children and adults with cancer, while advancing the understanding, treatment, cure, and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchSão Paulo, BrazilHQ recorded Sep 20, 20265,001-10,0006,380 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchSeattle, WA, United StatesHQ recorded Sep 20, 20261,001-5,0004,956 contacts →

Exact match

“Fred Hutch is an independent, nonprofit organization that also serves as the cancer program for UW Medicine.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchFort Myers, FL, United StatesHQ recorded Sep 20, 20261,001-5,0002,591 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 · Sep 20, 2026 · View company records in RevenueBase
5Exact matchSydney, AustraliaHQ recorded Sep 20, 20261,001-5,0001,919 contacts →

Exact match

“GenesisCare is a provider of integrated cancer care in Australia, Spain, and the U.K.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchAbu Dhabi, United Arab EmiratesHQ recorded Sep 20, 20261,001-5,0001,756 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchVincennes, IN, United StatesHQ recorded Sep 20, 20261,001-5,0001,723 contacts →

Exact match

“For more than 100 years, Good Samaritan has been a health care leader in southwestern Indiana and southeastern Illinois.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchBrisbane, AustraliaHQ recorded Sep 20, 20261,001-5,0001,443 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 · Sep 20, 2026 · View company records in RevenueBase
9Exact matchCuritiba, BrazilHQ recorded Sep 20, 20261,001-5,0001,049 contacts →

Exact match

“Nos anos de 1920 o câncer era tratado - tanto para médicos, quanto para a sociedade em geral – com tabu, mas o médico Erasto Gaertner via a doença com outros olhos.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchBangalore, IndiaHQ recorded Sep 20, 20261,001-5,0001,021 contacts →

Exact match

“HealthCare Global Enterprises Ltd, headquartered in Bangalore is India's largest Cancer Care Provider.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchSingaporeHQ recorded Sep 20, 2026501-1,000918 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchHyderabad, IndiaHQ recorded Sep 20, 20261,001-5,000825 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchPort Jefferson Station, NY, United StatesHQ recorded Sep 20, 20261,001-5,000783 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchRio De Janeiro, BrazilHQ recorded Sep 20, 20261,001-5,000761 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 · Sep 20, 2026 · View company records in RevenueBase
15Exact matchL'hospitalet De Llobregat, SpainHQ recorded Sep 20, 20261,001-5,000748 contacts →

Exact match

“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).”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchAnderlecht, BelgiumHQ recorded Sep 20, 20261,001-5,000709 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 · Sep 20, 2026 · View company records in RevenueBase
17Exact matchGuayaquil, EcuadorHQ recorded Sep 20, 20261,001-5,000688 contacts →

Exact match

“La Sociedad de Lucha Contra el Cáncer (SOLCA) del Ecuador fue fundada el 7 de diciembre de 1951.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchSão Paulo, BrazilHQ recorded Sep 20, 20261,001-5,000686 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 · Sep 20, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Sep 20, 2026n/a683 contacts →

Exact match

“UT MD ANDERSON CANCER CENTER is a hospital & health care company based out of 1515 HOLCOMBE BLVD, Houston, Texas, United States.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchRecife, BrazilHQ recorded Sep 20, 20261,001-5,000680 contacts →

Exact match

“O Hospital de Câncer de Pernambuco iniciou suas atividades em 9 de novembro de 1945 já com o objetivo de ser uma instituição de saúde de direito privado, sem fins lucrativos e de…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchLouisville, KY, United StatesHQ recorded Sep 20, 2026501-1,000630 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 · Sep 20, 2026 · View company records in RevenueBase
22Exact matchLittle Rock, AR, United StatesHQ recorded Sep 20, 2026501-1,000618 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 · Sep 20, 2026 · View company records in RevenueBase
23Exact matchCali, ColombiaHQ recorded Sep 20, 20261,001-5,000583 contacts →

Exact match

“La Clínica de Occidente Presta servicios integrales de salud de mediana y alta complejidad con enfoque en las especialidades de Oncología y Cardiología.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchBengaluru, IndiaHQ recorded Sep 20, 2026501-1,000523 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchMuriaé, BrazilHQ recorded Sep 20, 20261,001-5,000457 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 2,075 oncology clinics worldwide

See the full list, filter by size, metro and specialty, and access 21,578 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oncology clinics worldwide at a glance

As of Sep 20, 2026
18.5%Verified-email coverage
56.3Average contacts per company
11-50Median size (employees)
2.1%Largest-city concentration · Sao Paulo
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
615
11-50
646
51-200
391
201-500
178
501-1,000
105
1,001-5,000
76
5,001-10,000
30
10001+
9

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 oncology clinics are linked below.
What qualifies
Company records worldwide whose business descriptions match “oncology clinics” 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 21,578 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 September 20, 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.

Oncology clinics by location

6 lists · largest first

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

How many oncology clinics are there worldwide?

RevenueBase identified 2,075 company matches for oncology clinics worldwide as of September 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?

Dana-Farber Cancer Institute tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most oncology clinics?

The United States leads with 611 companies, followed by Brazil (315) and India (171). Every oncology clinics list by country and city is linked on this page.

Which city has the most oncology clinics?

Sao Paulo leads with 43 company records, followed by Houston (18) and Curitiba (16).

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 21,578 professional contacts with verified work emails tracked across these 2,075 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 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 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.