Diagnostic Radiology Physician
53,818 active US providers register Diagnostic Radiology Physician as their primary taxonomy. That is 0.6% of every provider in the registry, and the 45th largest of 584 specialties with a page here.
- Taxonomy code
- 2085R0202X
- Grouping
- Allopathic & Osteopathic Physicians
- Classification
- Radiology
- Specialization
- Diagnostic Radiology
- Active providers
- 53,818
- States covered
- 51 of 51
What the code means
A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.
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 |
|---|---|---|
| California | 5,589 | |
| Florida | 4,107 | |
| New York | 3,955 | |
| Texas | 3,811 | |
| Pennsylvania | 2,538 | |
| Illinois | 2,198 | |
| Ohio | 1,867 | |
| Michigan | 1,853 | |
| Massachusetts | 1,789 | |
| Minnesota | 1,731 | |
| North Carolina | 1,610 | |
| New Jersey | 1,368 | |
| Virginia | 1,324 | |
| Georgia | 1,298 | |
| Washington | 1,176 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
44,260 of these are people and 9,558 are organisations, so 18% of the code is businesses rather than clinicians. Half of them had registered by 2007, and 3,231 registered in the last five years, 6% 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.
- NEW YORK, NY1,064
- BOSTON, MA917
- HOUSTON, TX909
- CHICAGO, IL676
- LOS ANGELES, CA641
- PHILADELPHIA, PA609
- BALTIMORE, MD526
- DALLAS, TX523
- SAINT LOUIS, MO477
- EDINA, MN423
What else they list
Providers whose primary code is Diagnostic Radiology Physician 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 |
|---|---|---|
| Student in an Organized Health Care Education/Training Program | 3,571 | 6.6% |
| Vascular & Interventional Radiology Physician | 3,154 | 5.9% |
| Neuroradiology Physician | 2,427 | 4.5% |
| Body Imaging Physician | 2,002 | 3.7% |
| Diagnostic Ultrasound Physician | 1,583 | 2.9% |
| Nuclear Radiology Physician | 1,497 | 2.8% |
| Pediatric Radiology Physician | 1,164 | 2.2% |
| Internal Medicine Physician | 905 | 1.7% |
Nearby specialties
Other taxonomies NUCC files under Radiology.
- Radiation Oncology Physician8,793
- Vascular & Interventional Radiology Physician5,785
- Neuroradiology Physician1,801
- Body Imaging Physician1,310
- Pediatric Radiology Physician1,026
- Diagnostic Ultrasound Physician1,004
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.