Company lists · Data refreshed September 2026
Top 25 Radiation oncology centers worldwide
RevenueBase identified 999 radiation oncology centers worldwide as of September 2026 and tracks 40,722 professional contacts across them, including 12,315 with verified work emails. The United States is the largest market and Berlin the largest hub.
This list covers radiation oncology centers 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 21, 2026. Country and city lists for radiation oncology centers 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 radiation oncology centers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 8,815 contacts → | ||||
Indirect evidence “At Varian, a Siemens Healthineers company, we envision a world without fear of cancer.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 4,129 contacts → | ||||
Indirect evidence “Each year, millions of people hear the words no one wants to hear:"You have cancer." And behind each diagnosis lies a unique story, a family that deserves hope, a future that's…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,070 contacts → | ||||
Indirect evidence “Akumin is a leading U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,021 contacts → | ||||
Partial evidence “We work passionately to expand the curative power of radiation therapy to improve as many lives as possible.#AccurayExpandRT #CyberKnife #Radixact #TomoTherapy #AccurayExchange” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 918 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 783 contacts → | ||||
Strong evidence “As a comprehensive community oncology center, NYCBS delivers world-class cancer care close to home.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 686 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 618 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 329 contacts → | ||||
Indirect evidence “Somos la institución de mayor integralidad en la atención del paciente oncológico en el Eje Cafetero colombiano.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 295 contacts → | ||||
Partial evidence “Oncology Consultants has been a premiere adult medical oncology and hematology practice in Houston, TX since 1982.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 293 contacts → | ||||
Strong evidence “Sun Nuclear, part of Mirion Medical, provides innovative solutions for Radiation Therapy and Diagnostic Imaging centers.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 291 contacts → | ||||
Partial evidence “Ironwood Cancer & Research Centers are a group of community-based centers strategically located throughout the Metro Phoenix area.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 286 contacts → | ||||
Indirect evidence “Maastro provides patient care (with radiotherapy) and performs clinical radiotherapy research.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 274 contacts → | ||||
Partial evidence “GentleCure® by SkinCure Oncology is the most comprehensive approach to delivering advanced, nonsurgical treatment for basal cell carcinoma, squamous cell carcinoma, and other skin…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 269 contacts → | ||||
Indirect evidence “Com quase três décadas de experiência no combate ao câncer, oferecemos uma linha completa de cuidados, do diagnóstico ao tratamento, em um modelo de assistência que une…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 240 contacts → | ||||
Indirect evidence “Apollo Proton Cancer Centre, the most advanced Cancer Centre in India and the first Proton Therapy Centre in South Asia & the Middle East.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 237 contacts → | ||||
Indirect evidence “Join the Compass Family!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 232 contacts → | ||||
Indirect evidence “Contribuimos con nuestro esfuerzo permanente a mejorar la salud, brindando asistencia confiable y personalizada, en un marco de calidez, excelencia profesional y liderazgo…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 197 contacts → | ||||
Partial evidence “Masaryk Memorial Cancer Institute (MMCI) in Brno is a specialized comprehensive cancer center with supraregional activity that is certified by two quality certificates – by Joint…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 173 contacts → | ||||
Indirect evidence “Evidia Germany ist Teil der Evidia Group, eine der führenden Expertengruppen für Diagnostische und Interventionelle Radiologie, Nuklearmedizin und Strahlentherapie und…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 159 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 149 contacts → | ||||
Indirect evidence “Radiotherapiegroep heeft vier behandellocaties te weten: Arnhem, Deventer, Apeldoorn en Ede.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 149 contacts → | ||||
Indirect evidence “Bhagwan Mahaveer Cancer Hospital and Research Centre, Jaipur (BMCHRC) came into existence in the year 1997 with initial bed strength of 50 beds as a beginning.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 145 contacts → | ||||
Partial evidence “GVI Oncology is now known as Cancercare.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 143 contacts → | ||||
Strong evidence “The Arizona Center for Cancer Care is a Multispecialty Oncology group that is comprised of Radiation Oncology, Medical Oncology and Hematology, Gynecologic Oncology, Urology, and…” Source: RevenueBase Database · checked Sep 21, 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: radiation oncology centers. 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 radiation oncology centers.
- Partial evidence
- Its own public description names part of radiation oncology centers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name radiation oncology centers. 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 999 radiation oncology centers worldwide
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Radiation oncology centers worldwide at a glance
As of Sep 21, 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 radiation oncology centers, 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 radiation oncology centers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “radiation oncology centers”. 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 radiation oncology centers), 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 radiation oncology centers, 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, 12,315 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 21, 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.
Radiation oncology centers by location
5 lists · largest firstEvery Radiation oncology centers 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 radiation oncology centers, 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 radiation oncology centers are there worldwide?
RevenueBase identified 999 radiation oncology centers 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?
Varian, headquartered in Palo Alto, tops this list with the largest team on record.
Which country has the most radiation oncology centers?
The United States leads with 311 companies, followed by Brazil (91) and Germany (85). Every radiation oncology centers list by country and city is linked on this page.
Which city has the most radiation oncology centers?
Berlin leads with 11 headquartered companies, followed by Houston (9) and Sao Paulo (7).
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 12,315 verified decision-maker contacts tracked across these 999 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 21, 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.