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Medical Oncology Providers in the United States

Data updated monthly · Last refresh September 2026

5,815 Medical Oncology providers practice across all 50 states and Washington DC, and 60% received drug or device company payments in 2025. Florida has the most at 565. Listings are drawn from federal public records and are not endorsements.

5,815providers
51states
60%with industry payments

Industry payment share ranges from 81% in Florida to 30% in New Hampshire, among states with 25 or more providers.

Medical Oncology providers by state

StateProvidersReceived payments
Medical Oncology in Florida56581%
Medical Oncology in New York55057%
Medical Oncology in Texas54570%
Medical Oncology in California45062%
Medical Oncology in Massachusetts42546%
Medical Oncology in Pennsylvania26261%
Medical Oncology in Maryland22240%
Medical Oncology in North Carolina19463%
Medical Oncology in Illinois18562%
Medical Oncology in Washington18350%
Medical Oncology in Michigan17853%
Medical Oncology in Ohio17162%
Medical Oncology in Minnesota16152%
Medical Oncology in Missouri15561%
Medical Oncology in New Jersey14061%
Medical Oncology in Tennessee11461%
Medical Oncology in Oregon11045%
Medical Oncology in Colorado10853%
Medical Oncology in Virginia10658%
Medical Oncology in Connecticut10148%
Medical Oncology in Georgia8763%
Medical Oncology in Indiana7872%
Medical Oncology in Wisconsin6935%
Medical Oncology in Arizona6378%
Medical Oncology in Iowa6152%
Medical Oncology in Kentucky5961%
Medical Oncology in Utah4468%
Medical Oncology in South Carolina3557%
Medical Oncology in Kansas3462%
Medical Oncology in Alabama3379%
Medical Oncology in New Hampshire3030%
Medical Oncology in Washington DC2952%
Medical Oncology in Arkansas23not reported
Medical Oncology in Louisiana22not reported
Medical Oncology in Maine22not reported
Medical Oncology in Idaho22not reported
Medical Oncology in Nevada22not reported
Medical Oncology in Mississippi19not reported
Medical Oncology in Delaware17not reported
Medical Oncology in New Mexico16not reported
Medical Oncology in Vermont16not reported
Medical Oncology in North Dakota15not reported
Medical Oncology in Oklahoma13not reported
Medical Oncology in Nebraska12not reported
Medical Oncology in West Virginia11not reported
Medical Oncology in Hawaii10not reported
Medical Oncology in Montana9not reported
Medical Oncology in Rhode Island8not reported
Medical Oncology in South Dakota4not reported
Medical Oncology in Wyoming4not reported
Medical Oncology in Alaska3not reported

Common questions

How many Medical Oncology providers are there in the United States?

There are 5,815 Medical Oncology providers with active NPI records across all 50 states and Washington DC, according to federal NPPES data refreshed monthly. Florida has the most at 565.

What share of Medical Oncology providers received drug or device company payments?

3,475 of 5,815 Medical Oncology providers nationally (60%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program. The share is highest in Florida at 81% and lowest in New Hampshire at 30%.

Where does this data come from?

Provider counts come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.

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Sources: NPPES (CMS), Doctors and Clinicians national files, CMS Open Payments 2025. Updated monthly. Records are public federal data and are not verified credentials, licensure checks, or endorsements. This directory is informational and not medical advice. How we build this directory.