Company lists · Data refreshed September 2026

Top 25 Radiation oncology centers based in the United States

RevenueBase identified 311 company matches for radiation oncology centers associated with the United States as of September 2026 and tracks 18,755 professional contacts across them, including 8,189 with verified work emails. Houston is the largest hub.

This list covers company matches for radiation oncology centers associated with the United States, 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 21, 2026.

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 21, 2026 How this list was built
311Companies
18,755Contacts tracked
8,189Verified emails
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The 25 largest radiation oncology centers based in the United States

Ranked by team size
Top 25 of 311 company matches for radiation oncology centers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 matchPalo Alto, CA, United StatesHQ recorded Sep 21, 202610001+8,815 contacts →

Exact match

“At Varian, a Siemens Healthineers company, we envision a world without fear of cancer.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchTampa, FL, United StatesHQ recorded Sep 21, 20261,001-5,0001,070 contacts →

Exact match

“Akumin is a leading U.S.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchMadison, WI, United StatesHQ recorded Sep 21, 2026501-1,0001,021 contacts →

Exact match

“We work passionately to expand the curative power of radiation therapy to improve as many lives as possible.#AccurayExpandRT #CyberKnife #Radixact #TomoTherapy #AccurayExchange”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchPort Jefferson Station, NY, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
5Exact matchLittle Rock, AR, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Sep 21, 2026201-500295 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 · Sep 21, 2026 · View company records in RevenueBase
7Exact matchMelbourne, FL, United StatesHQ recorded Sep 21, 2026201-500293 contacts →

Exact match

“Sun Nuclear, part of Mirion Medical, provides innovative solutions for Radiation Therapy and Diagnostic Imaging centers.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchChandler, AZ, United StatesHQ recorded Sep 21, 2026501-1,000291 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 · Sep 21, 2026 · View company records in RevenueBase
9Exact matchBurr Ridge, IL, United StatesHQ recorded Sep 21, 2026501-1,000274 contacts →

Exact match

“GentleCure® by SkinCure Oncology is the most comprehensive approach to delivering advanced, nonsurgical treatment for basal cell carcinoma, squamous cell carcinoma, and other skin…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchTigard, OR, United StatesHQ recorded Sep 21, 2026201-500237 contacts →

Exact match

“Join the Compass Family!”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchPeoria, AZ, United StatesHQ recorded Sep 21, 2026201-500143 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchNew York, NY, United StatesHQ recorded Sep 21, 202651-200131 contacts →

Exact match

“The New York Proton Center is creating the gold standard for proton therapy, giving new hope to patients living with cancer.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchOmaha, NE, United StatesHQ recorded Sep 21, 2026201-500126 contacts →

Exact match

“Nebraska Cancer Specialists (NCS) is a leading community-based oncology and hematology practice committed to providing advanced, compassionate cancer care across Nebraska.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchArlington, VA, United StatesHQ recorded Sep 21, 202651-200117 contacts →

Exact match

“ASTRO has more than members including radiation oncologists, radiation oncology nurses, medical physicists, radiation therapists, dosimetrists and biologists.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchKalamazoo, MI, United StatesHQ recorded Sep 21, 202651-200105 contacts →

Exact match

“West Michigan Cancer Center (WMCC) is changing the tide on cancer.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchAustin, TX, United StatesHQ recorded Sep 21, 2026201-50090 contacts →

Exact match

“In 1973, Dr.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 21, 2026201-50081 contacts →

Exact match

“Utah Cancer Specialists is a comprehensive oncology medical practice located in Utah.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchEdina, MN, United StatesHQ recorded Sep 21, 202651-20073 contacts →

Exact match

“In 1982, Dr.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchAliso Viejo, CA, United StatesHQ recorded Sep 21, 20265,001-10,00073 contacts →

Exact match

“At Merit Oncology, we are committed to easing the burden of cancer on patients and their loved ones by developing unparalleled technologies to improve the treatment process for…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchPort Charlotte, FL, United StatesHQ recorded Sep 21, 202651-20063 contacts →

Exact match

“At Advocate Radiation Oncology, our purpose is in our name: to advocate for each cancer patient during their journey.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchBeverly Hills, CA, United StatesHQ recorded Sep 21, 202651-20063 contacts →

Exact match

“About the Practice and Mission At the Beverly Hills Cancer Center, our primary goal is to cure every patient's cancer.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchSelma, AL, United StatesHQ recorded Sep 21, 2026n/a61 contacts →

Exact match

“Montgomery Cancer Center provides state-of-the-art technology - and the expertise to use it - to give patients the highest quality treatment and cancer care.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchCape Coral, FL, United StatesHQ recorded Sep 21, 20261,001-5,00061 contacts →

Exact match

“An integrated oncology and multispecialty physician network in Florida and North Carolina providing care for more than patients annually, GenesisCare U.S.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchColumbia, SC, United StatesHQ recorded Sep 21, 2026201-50057 contacts →

Exact match

“South Carolina Oncology Associates (SCOA) is the only comprehensive cancer treatment center in South Carolina that provides medical, radiation and gynecological oncology plus…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchSan Antonio, TX, United StatesHQ recorded Sep 21, 202651-20055 contacts →

Exact match

“Oncology San Antonio is committed to a comprehensive and compassionate team approach in the diagnosis, treatment and ongoing follow-up care of every cancer patient.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 311 radiation oncology centers based in the United States

See the full list, filter by size, metro and specialty, and access 8,189 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Radiation oncology centers based in the United States at a glance

As of Sep 21, 2026
43.7%Verified-email coverage
60.3Average contacts per company
11-50Median size (employees)
2.9%Largest-city concentration · Houston
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
93
11-50
114
51-200
64
201-500
22
501-1,000
12
1,001-5,000
4
5,001-10,000
1
10001+
1

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 311 companies.

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.
What qualifies
Company records associated with the United States whose business descriptions match “radiation oncology centers” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 8,189 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 21, 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.

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

How many radiation oncology centers are there based in the United States?

RevenueBase identified 311 company matches for radiation oncology centers associated with the United States 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?

Varian tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most radiation oncology centers?

Houston leads with 9 company records, followed by Austin (5) and Las Vegas (5).

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 8,189 professional contacts with verified work emails tracked across these 311 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 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 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.