Clinical & Laboratory Immunology (Internal Medicine) Physician
NUCC 207RI0001X · Internal Medicine
29 CMS NPPES-registered providers across 16 states · 619th of 690 specialties by headcount.
Where this specialty sits in the corpus
Clinical & Laboratory Immunology (Internal Medicine) Physician ranks 619th of 690 NUCC specialties by CMS NPPES headcount (0% of all registered NPIs), densest in California; per resident California leads.
- 29
- NPPES providers in specialty
- 619th
- of 690 specialties
- 939
- state-share HHI
- 37.9%
- Part D prescriber share
California is densest per capita (1.5× the national rate); 0% of the Internal Medicine category.
Taxonomy fingerprint
Clinical & Laboratory Immunology (Internal Medicine) Physician (NUCC 207RI0001X; 37.9% Part D prescribers (11 of 29); avg 701 Part D claims/prescriber (238th of 572); Open Payments avg $3K/physician (143rd of 551; 7 paid, $23K total); state-share HHI 939; next-larger headcount neighbor Human Factors Physical Therapist (+1); next-smaller Community Psychiatric/Mental Health Clinical Nurse Specialist (-1)).
Next larger: Human Factors Physical Therapist (30) Next smaller: Community Psychiatric/Mental Health Clinical Nurse Specialist (28)
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 5 |
| 2 | Colorado | 4 |
| 3 | Florida | 4 |
| 4 | Maryland | 2 |
| 5 | New York | 2 |
| 6 | Ohio | 2 |
| 7 | District of Columbia | 1 |
| 8 | Georgia | 1 |
Sample Clinical & Laboratory Immunology (Internal Medicine) Physician NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Aliya Khan, MDDayton, OH |
| 2 | Richard Burt, MDLa Jolla, CA |
| 3 | Michael Kolber, MDMiami, FL |
| 4 | Michael Goldman, M.D.Baltimore, MD |
| 5 | Mark Liu, M.D.Baltimore, MD |
| 6 | Mark Paris, MD MPH DTM&H AAHIVSDelray Beach, FL |
| 7 | Sitaramesh Emani, M.D.Cincinnati, OH |
| 8 | Adiseshu Gundlapalli, MD, PHDAtlanta, GA |
| 9 | Harold Nelson, MDDenver, CO |
| 10 | Stephen Dreskin, MDAurora, CO |
| 11 | Suzanne Fishman, MDLakewood, CO |
| 12 | Burt Meyers, M.D.New York, NY |
Frequently Asked Questions
Why is Clinical & Laboratory Immunology (Internal Medicine) Physician a thin NUCC code in NPPES?
Do the few Clinical & Laboratory Immunology (Internal Medicine) Physician NPIs in Open Payments look unusual?
How much Part D prescribing does this specialty do?
Data sources and methodology
Provider data from CMS NPPES (download.cms.gov/nppes). Specialty classification from NUCC Health Care Provider Taxonomy (nucc.org). Part D averages from the CMS Medicare Part D Prescriber PUF; industry payments from CMS Open Payments 2024. Counts reflect self-designated primary taxonomy at NPI enrollment. PlainDoctor does not rate or rank providers. Methodology · About
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2026-08-27.