Radiation Oncology Clinic/Center
341 active US providers register Radiation Oncology Clinic/Center as their primary taxonomy. That is 0.00% of every provider in the registry, and the 546th largest of 584 specialties with a page here.
- Taxonomy code
- 261QX0203X
- Grouping
- Ambulatory Health Care Facilities
- Classification
- Clinic/Center
- Specialization
- Oncology, Radiation
- Active providers
- 341
- States covered
- 46 of 51
What the code means
Definition to come...
Definition quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.
Where they are
Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.
| State | Providers | Share |
|---|---|---|
| Texas | 46 | |
| California | 36 | |
| Florida | 26 | |
| Georgia | 18 | |
| Tennessee | 13 | |
| New York | 11 | |
| Colorado | 11 | |
| Ohio | 10 | |
| Illinois | 10 | |
| Minnesota | 10 | |
| Indiana | 9 | |
| Massachusetts | 9 | |
| North Carolina | 8 | |
| Missouri | 7 | |
| Maryland | 7 |
Showing the 15 largest of 46 states with at least one.
Who registers under this code
12 of these are people and 329 are organisations, so 96% of the code is businesses rather than clinicians. Half of them had registered by 2009, and 32 registered in the last five years, 9% of the current population.
That is a slow-growing code, which usually means an established field replacing retirements rather than expanding.
Where the practices are
By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.
- HOUSTON, TX6
- NEW YORK, NY6
- DALLAS, TX6
- LAFAYETTE, CO5
- ARLINGTON, TX4
- COLUMBUS, GA4
- BEAUMONT, TX3
- KNOXVILLE, TN3
- LAWNDALE, CA3
- HUNTSVILLE, TX3
What else they list
Providers whose primary code is Radiation Oncology Clinic/Center most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.
| Also listed | Providers | Share |
|---|---|---|
| Radiation Oncology Physician | 15 | 4.4% |
| Specialist | 6 | 1.8% |
| Clinic/Center | 6 | 1.8% |
| Radiation Therapy Radiologic Technologist | 4 | 1.2% |
| Multi-Specialty Clinic/Center | 3 | 0.9% |
| Oncology Clinic/Center | 3 | 0.9% |
| Medical Oncology Physician | 3 | 0.9% |
| Infusion Therapy Clinic/Center | 2 | 0.6% |
Nearby specialties
Other taxonomies NUCC files under Clinic/Center.
- Research Clinic/Center351
- Recovery Care Clinic/Center353
- Mammography Clinic/Center378
- Medically Fragile Infants and Children Day Care379
- Corporate Health Clinic/Center381
- Oncology Clinic/Center386
Looking up a specific provider
These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.
Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.