Nuclear Imaging & Therapy Physician providers in the U.S.
173 NPPES records list nuclear imaging & therapy physician as their primary taxonomy; Wisconsin and Wyoming have the most per resident. 26 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 207UN0902X means
207UN0902X is the National Uniform Claim Committee code for Nuclear Medicine, Nuclear Imaging & Therapy, in the grouping Allopathic & Osteopathic Physicians. 173 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
A nuclear medicine physician who specializes in nuclear imaging and therapy.
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 207UN0902X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
New York has the most, 10
Source: CMS NPPES, primary taxonomy 207UN0902X by practice city, file of Aug 9, 2026.
All 32 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| Arizona | 1 | 0.0 |
| Arkansas | 2 | 0.1 |
| California | 28 | 0.1 |
| Colorado | 1 | 0.0 |
| District of Columbia | 1 | 0.1 |
| Florida | 4 | 0.0 |
| Georgia | 5 | 0.0 |
| Hawaii | 1 | 0.1 |
| Illinois | 8 | 0.1 |
| Iowa | 3 | 0.1 |
| Kansas | 1 | 0.0 |
| Kentucky | 6 | 0.1 |
| Maryland | 9 | 0.1 |
| Massachusetts | 6 | 0.1 |
| Michigan | 1 | 0.0 |
| Minnesota | 1 | 0.0 |
In federal data
- NUCC code207UN0902X · Nuclear Medicine
- Size rank461st of 688 specialties by records (0% of all)
- In its family2nd of 4 Nuclear Medicine codes, 15.4% of the family
- Part D prescribers26 (15% of records)
- Part D claims749 a year per prescriber, on average (118th of 496)
- Industry payments42 physicians paid $48K in 2024, $1K each on average
- Concentration5 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 nuclear imaging & therapy physician records
- Kathy Thomas, M.D.Little Rock, AR1912011743
- Sushama Bhargava, M.D.Fayetteville, AR1932143005
- Travis Walsh, D.O.Tucson, AZ1336152727
- Jeremie Calais, MDLos Angeles, CA1053927079
- Franco Policaro, M.D.El Segundo, CA1144277427
- John White, M.D.Rancho Palos Verdes, CA1336404599
- Sing-Yung Wu, M.D.Long Beach, CA1912011917
- Doina Tanasescu, MDSylmar, CA1184632796
- Chiayi NiSylmar, CA1740686435
- Maral Mardiros, M.D.Woodland Hills, CA1083739882
- Maria Guevara, MDNorth Hollywood, CA1316124662
- Michael Siegel, M.D.La Jolla, CA1285885681
Registry order, not a ranking. Search by name to find one provider.
Common questions
Why is Nuclear Imaging & Therapy Physician a thin NUCC code in NPPES?
Only 173 NPIs list Nuclear Imaging & Therapy Physician as primary taxonomy across 33 states (peak California, 28). That is 461st of 688 NUCC codes by headcount. Thin codes are still searchable by NPI; do not treat the low count as a quality signal.
Do the few Nuclear Imaging & Therapy Physician NPIs in Open Payments look unusual?
CMS Open Payments 2024 lists 42 paid Nuclear Imaging & Therapy Physician physicians totaling $48K (125 payments; average $1K, 216th of 470 by average). Presence is not a quality judgment; thin specialties often have sparse payment rows.
How much Part D prescribing does this specialty do?
Among Nuclear Imaging & Therapy Physician NPIs, 26 appear in the Medicare Part D Prescriber PUF (average 749 claims and $64K drug cost per prescriber; 118th 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.