Allergy & Immunology Physician
NUCC 207K00000X · Allergy & Immunology
3,412 CMS NPPES-registered providers across 52 states · 158th of 690 specialties by headcount.
Where this specialty sits in the corpus
Allergy & Immunology Physician ranks 158th of 690 NUCC specialties by CMS NPPES headcount (0.05% of all registered NPIs), densest in California; per resident District of Columbia leads.
- 3,412
- NPPES providers in specialty
- 158th
- of 690 specialties
- 457
- state-share HHI
- 70.3%
- Part D prescriber share
District of Columbia is densest per capita (2.9× the national rate; Maryland 1.7×); 75.4% of the Allergy & Immunology category.
Taxonomy fingerprint
Allergy & Immunology Physician (NUCC 207K00000X; 70.3% Part D prescribers (2,397 of 3,412); avg 788 Part D claims/prescriber (210th of 572); Open Payments avg $9K/physician (48th of 551; 2,070 paid, $17.8M total); state-share HHI 457; next-larger headcount neighbor Music Therapist (+48); next-smaller Vascular & Interventional Radiology Physician (-218)).
Next larger: Music Therapist (3,460) Next smaller: Vascular & Interventional Radiology Physician (3,194)
Population-adjusted state index
Each multiple is this specialty's providers-per-resident in a state divided by the national rate (Census Vintage population estimates). Raw headcount favors large states; this ranking surfaces denser markets.
Over-indexed vs national rate
- District of Columbia 2.9× · 2.9/100k
- Maryland 1.7× · 1.7/100k
- Colorado 1.6× · 1.6/100k
- Connecticut 1.4× · 1.4/100k
Under-indexed vs national rate
- Puerto Rico 0.31× · 0.3/100k
- Idaho 0.35× · 0.4/100k
- Maine 0.36× · 0.4/100k
- Oklahoma 0.37× · 0.4/100k
- Alabama 0.49× · 0.5/100k
Which states have the most providers?
| # | State | Providers |
|---|---|---|
| 1 | California | 380 |
| 2 | New York | 274 |
| 3 | Texas | 274 |
| 4 | Florida | 204 |
| 5 | Pennsylvania | 170 |
| 6 | North Carolina | 133 |
| 7 | Illinois | 127 |
| 8 | New Jersey | 119 |
| 9 | Ohio | 119 |
| 10 | Virginia | 116 |
| 11 | Maryland | 106 |
| 12 | Michigan | 101 |
| 13 | Colorado | 93 |
| 14 | Georgia | 89 |
| 15 | Massachusetts | 88 |
Top Cities for Allergy & Immunology Physician
| # | City | Providers |
|---|---|---|
| 1 | New YorkNew York | 64 |
| 2 | San DiegoCalifornia | 38 |
| 3 | PhiladelphiaPennsylvania | 37 |
| 4 | BostonMassachusetts | 36 |
| 5 | HoustonTexas | 36 |
| 6 | ChicagoIllinois | 35 |
| 7 | CharlotteNorth Carolina | 33 |
| 8 | Los AngelesCalifornia | 29 |
| 9 | BrooklynNew York | 28 |
| 10 | AustinTexas | 28 |
| 11 | BethesdaMaryland | 26 |
| 12 | CincinnatiOhio | 25 |
Sample Allergy & Immunology Physician NPIs
A directory sample from this NUCC code (not a ranking). Names and locations are unique to this taxonomy.
| # | Provider |
|---|---|
| 1 | Rodrigo Hurtado, M.D.Alexandria, VA |
| 2 | Ray Rodriguez, MDTemple, TX |
| 3 | William Spiegel, MDBlue Bell, PA |
| 4 | Eva Jakabovics, MDBlue Bell, PA |
| 5 | Steven Simonte, M.D.Orlando, FL |
| 6 | Jean Alexander, MDDickson, TN |
| 7 | Mark Posner, MDBlue Bell, PA |
| 8 | Robert Anolik, MDBlue Bell, PA |
| 9 | Stanley Forman, MDMerion Station, PA |
| 10 | Matthew Fogg, MDBlue Bell, PA |
| 11 | Gilberto Rodriguez, MDBlue Bell, PA |
| 12 | Mark Lepore, MDBlue Bell, PA |
| 13 | Nora Lin, MDBlue Bell, PA |
| 14 | David Patterson, MDNoblesville, IN |
| 15 | Judy Del Mundo, M.D.San Jose, CA |
| 16 | Yongxin Chen, M.D.Katy, TX |
| 17 | Leonard Hoffman, MDHouston, TX |
| 18 | Eileen Marin, M.D.Silver Spring, MD |
Related Specialties
Adjacent specialties in the NUCC Health Care Provider Taxonomy - same Allergy & Immunology category.
Compare Allergy & Immunology Physician vs Allergy Physician →
Frequently Asked Questions
Where does the large Allergy & Immunology Physician headcount concentrate?
How large is Allergy & Immunology Physician's Open Payments footprint?
How heavy is Allergy & Immunology Physician Part D prescribing at scale?
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.