Radiation Oncology Physician: NPI taxonomy code 2085R0001X
Taxonomy code 2085R0001X is Radiology: Radiation Oncology, in the Allopathic & Osteopathic Physicians group.
8,841 active NPIs list it as their primary specialty (<0.1% of all).
| Code | 2085R0001X |
|---|---|
| Group | Allopathic & Osteopathic Physicians |
| Classification | Radiology |
| Specialization | Radiation Oncology |
| Used for | individual providers (the code is in NUCC's Individual section) |
| Active NPIs, primary specialty | 8,841 (6,938 individuals, 1,903 organizations) |
What NUCC says: A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors. (excerpt of the NUCC 26.1 definition)
Find Radiation Oncology Physician providers
Search the registry for providers listing Radiation Oncology. Pick a state to narrow it down.
Where they are
| State | Active NPIs | Share |
|---|---|---|
| California | 945 | 10.7% |
| Florida | 737 | 8.3% |
| Texas | 572 | 6.5% |
| New York | 561 | 6.3% |
| Pennsylvania | 496 | 5.6% |
| Ohio | 347 | 3.9% |
| Illinois | 347 | 3.9% |
| Michigan | 298 | 3.4% |
| North Carolina | 272 | 3.1% |
| Massachusetts | 271 | 3.1% |
Top states by practice location, from the NPPES file of September 13, 2026.
Related specialties
- Diagnostic Radiology Physician 54,021
- Vascular & Interventional Radiology Physician 5,850
- Neuroradiology Physician 1,812
- Body Imaging Physician 1,309
- Pediatric Radiology Physician 1,028
- Diagnostic Ultrasound Physician 1,010
- Nuclear Radiology Physician 510
- Therapeutic Radiology Physician 310
Specialty definitions are from the NUCC Health Care Provider Taxonomy (version 26.1). Which code to use on a claim depends on your NPPES record and your payer. See taxonomy codes explained.