Clinical & Laboratory Immunology (Internal Medicine) Physician providers in the U.S.
23 NPPES records list clinical & laboratory immunology (internal medicine) physician as their primary taxonomy; District of Columbia and West Virginia have the most per resident. 8 of them appear in the Medicare Part D prescriber file: a registry record is not proof of an active practice.
What taxonomy code 207RI0001X means
207RI0001X is the National Uniform Claim Committee code for Internal Medicine, Clinical & Laboratory Immunology, in the grouping Allopathic & Osteopathic Physicians. 23 NPPES records list it as their primary taxonomy (file of Aug 9, 2026).
An internal medicine physician who specializes in clinical and laboratory immunology disease management.
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 207RI0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.
Hackensack has the most, 2
Source: CMS NPPES, primary taxonomy 207RI0001X by practice city, file of Aug 9, 2026.
All 14 states and D.C. with records, by state
| State | Records | Per 100,000 |
|---|---|---|
| California | 3 | 0.0 |
| Colorado | 1 | 0.0 |
| District of Columbia | 1 | 0.1 |
| Florida | 3 | 0.0 |
| Maryland | 2 | 0.0 |
| Massachusetts | 1 | 0.0 |
| New Jersey | 2 | 0.0 |
| State | Records | Per 100,000 |
|---|---|---|
| New York | 2 | 0.0 |
| Oregon | 1 | 0.0 |
| Pennsylvania | 1 | 0.0 |
| South Carolina | 1 | 0.0 |
| Texas | 2 | 0.0 |
| Washington | 2 | 0.0 |
| West Virginia | 1 | 0.1 |
In federal data
- NUCC code207RI0001X · Internal Medicine
- Size rank628th of 688 specialties by records (0% of all)
- In its family27th of 31 Internal Medicine codes, 0% of the family
- Part D prescribers8 (34.8% of records)
- Part D claims1,540 a year per prescriber, on average (38th of 496)
- Industry payments6 physicians paid $8K 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 clinical & laboratory immunology (internal medicine) physician records
- Sasa MilosevicLos Alamitos, CA1922816628
- Karen InouyeValley Glen, CA1043799901
- Tyana ShawAntioch, CA1669199642
- Anthony MisciasciAurora, CO1669093597
- Charles Faselis, M.D.Washington, DC1669653218
- Michael Kolber, MDMiami, FL1578528279
- Rosa Rivera, DBA,MLS (ASCP)West Palm Beach, FL1891358651
- Chakita HarrisLakeland, FL1326709023
- Lisa Hirschhorn, M.D.Boston, MA1225228323
- Gregory Kumkumian, M.D.Bethesda, MD1851336200
- Michael Goldman, M.D.Baltimore, MD1437103892
- Roman Prager, MDHackensack, NJ1568789634
Registry order, not a ranking. Search by name to find one provider.
Common questions
Why is Clinical & Laboratory Immunology (Internal Medicine) Physician a thin NUCC code in NPPES?
Only 23 NPIs list Clinical & Laboratory Immunology (Internal Medicine) Physician as primary taxonomy across 14 states (peak California, 3). That is 628th 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 Clinical & Laboratory Immunology (Internal Medicine) Physician NPIs in Open Payments look unusual?
CMS Open Payments 2024 lists 6 paid Clinical & Laboratory Immunology (Internal Medicine) Physician physicians totaling $8K (59 payments; average $1K, 194th 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 Clinical & Laboratory Immunology (Internal Medicine) Physician NPIs, 8 appear in the Medicare Part D Prescriber PUF (average 1,540 claims and $347K drug cost per prescriber; 38th 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.