Radiation Oncology Physician providers in the U.S.
6,915 NPPES records list radiation oncology physician as their primary taxonomy, about 2.1 per 100,000 residents; District of Columbia and Massachusetts have the most per resident. 4,851 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 2085R0001X means
2085R0001X is the National Uniform Claim Committee code for Radiology, Radiation Oncology, in the grouping Allopathic & Osteopathic Physicians. 6,915 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
A radiologist who deals with the therapeutic applications of radiant energy and its modifiers and the study and management of disease, especially malignant tumors.
Source: NUCC Health Care Provider Taxonomy code set, definition as NUCC publishes it (nucc.org); counts from CMS NPPES.
Most per resident: the 8 highest
Source: CMS NPPES, primary taxonomy 2085R0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Houston has the most, 157
Source: CMS NPPES, primary taxonomy 2085R0001X by practice city, file of Aug 9, 2026.
All 51 by state
| State | Records | Per 100,000 |
|---|---|---|
| Alabama | 80 | 1.6 |
| Alaska | 15 | 2.0 |
| Arizona | 156 | 2.1 |
| Arkansas | 49 | 1.6 |
| California | 735 | 1.9 |
| Colorado | 111 | 1.9 |
| Connecticut | 82 | 2.3 |
| Delaware | 19 | 1.8 |
| District of Columbia | 26 | 3.8 |
| Florida | 520 | 2.3 |
| Georgia | 180 | 1.6 |
| Hawaii | 28 | 2.0 |
| Idaho | 25 | 1.3 |
| Illinois | 277 | 2.2 |
| Indiana | 135 | 2.0 |
| Iowa | 67 | 2.1 |
| Kansas | 68 | 2.3 |
| Kentucky | 88 | 1.9 |
| Louisiana | 66 | 1.4 |
| Maine | 27 | 1.9 |
| Maryland | 124 | 2.0 |
| Massachusetts | 241 | 3.4 |
| Michigan | 239 | 2.4 |
| Minnesota | 160 | 2.8 |
| Mississippi | 41 | 1.4 |
| Missouri | 136 | 2.2 |
| State | Records | Per 100,000 |
|---|---|---|
| Montana | 24 | 2.1 |
| Nebraska | 37 | 1.9 |
| Nevada | 45 | 1.4 |
| New Hampshire | 40 | 2.9 |
| New Jersey | 153 | 1.6 |
| New Mexico | 26 | 1.2 |
| New York | 449 | 2.3 |
| North Carolina | 230 | 2.1 |
| North Dakota | 23 | 2.9 |
| Ohio | 298 | 2.5 |
| Oklahoma | 56 | 1.4 |
| Oregon | 115 | 2.7 |
| Pennsylvania | 383 | 3.0 |
| Rhode Island | 29 | 2.6 |
| South Carolina | 80 | 1.5 |
| South Dakota | 22 | 2.4 |
| Tennessee | 132 | 1.9 |
| Texas | 449 | 1.5 |
| Utah | 62 | 1.8 |
| Vermont | 14 | 2.2 |
| Virginia | 137 | 1.6 |
| Washington | 198 | 2.5 |
| West Virginia | 37 | 2.1 |
| Wisconsin | 153 | 2.6 |
| Wyoming | 7 | 1.2 |
In federal data
- NUCC code2085R0001X · Radiology
- Size rank115th of 688 specialties by records (0.09% of all)
- In its family2nd of 12 Radiology codes, 11.3% of the family
- Part D prescribers4,851 (70.2% of records)
- Part D claims134 a year per prescriber, on average (320th of 496)
- Industry payments3,275 physicians paid $6.2M in 2024, $2K each on average
- Concentration9 states hold half of all records
Source: CMS NPPES; Medicare Part D Prescriber PUF; CMS Open Payments 2024. Presence in these files is not a quality judgment.
A sample of radiation oncology physician records
- Larry Daugherty, M.D.Anchorage, AK1407011208
- William Magnuson, M.D.Anchorage, AK1730492588
- Michael Green, MD, PHDAnchorage, AK1053722918
- Malcolm Bull, M.D.Anchorage, AK1942331558
- John Halligan, MDAnchorage, AK1982676284
- James Blom, MDAnchorage, AK1871565556
- Aaron Kusano, MDAnchorage, AK1407170467
- Stephen Settle, MDAnchorage, AK1508181819
- Daniel SeibleAnchorage, AK1427476340
- Ewa Zabrocka, MDAnchorage, AK1407350614
- Robert Sollaccio, M.D.Palmer, AK1942202981
- John Yordy, M.D. , PH.D.Palmer, AK1063711026
- Stacey Wells, MDSoldotna, AK1538554993
- Essam Shihadeh, MDFairbanks, AK1891881231
- Eugene Huang, M.D.Juneau, AK1972626927
- Victor Risch, MDAllentown, AL1811970296
Registry order, not a ranking. Search by name to find one provider.
Common questions
Where does the large Radiation Oncology Physician headcount concentrate?
6,915 Radiation Oncology Physician NPIs span 53 states; California alone holds 735. Top metros include Houston, TX; New York, NY; Boston, MA; Philadelphia, PA. Nationally this is 115th of 688 NUCC codes.
How large is Radiation Oncology Physician's Open Payments footprint?
CMS Open Payments 2024 lists 3,275 Radiation Oncology Physician physicians totaling $6.2M (29,931 payments; average $2K, 166th of 470). Presence in Open Payments is not a quality judgment.
How heavy is Radiation Oncology Physician Part D prescribing at scale?
Among Radiation Oncology Physician NPIs, 4,851 appear in the Medicare Part D Prescriber PUF (average 134 claims and $18K drug cost per prescriber; 320th of 496 specialties by average claims). Non-prescribing clinicians in the same NUCC code are still in NPPES.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy (nucc.org); Medicare Part D Prescriber PUF; CMS Open Payments 2024. Counts are self-designated primary taxonomy, not board certification.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.