Allergy Physician
1,658 active US providers register Allergy Physician as their primary taxonomy. That is 0.02% of every provider in the registry, and the 319th largest of 584 specialties with a page here.
- Taxonomy code
- 207KA0200X
- Grouping
- Allopathic & Osteopathic Physicians
- Classification
- Allergy & Immunology
- Specialization
- Allergy
- Active providers
- 1,658
- States covered
- 51 of 51
What the code means
A physician who specializes in the diagnosis, treatment, and management of allergies.
Definition quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.
Where they are
Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.
| State | Providers | Share |
|---|---|---|
| California | 252 | |
| New York | 173 | |
| Texas | 134 | |
| Florida | 120 | |
| Illinois | 80 | |
| Pennsylvania | 63 | |
| New Jersey | 63 | |
| Massachusetts | 58 | |
| Michigan | 54 | |
| Ohio | 53 | |
| Virginia | 52 | |
| Maryland | 51 | |
| Missouri | 44 | |
| Georgia | 41 | |
| Arizona | 28 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
1,014 of these are people and 644 are organisations, so 39% of the code is businesses rather than clinicians. Half of them had registered by 2006, and 76 registered in the last five years, 5% of the current population.
That is a slow-growing code, which usually means an established field replacing retirements rather than expanding.
Where the practices are
By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.
- NEW YORK, NY35
- SAN ANTONIO, TX17
- COLUMBUS, OH17
- CHICAGO, IL17
- BROOKLYN, NY17
- FRESNO, CA14
- LOS ANGELES, CA14
- HOUSTON, TX13
- ORLAND PARK, IL13
- SAN DIEGO, CA13
What else they list
Providers whose primary code is Allergy Physician most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.
| Also listed | Providers | Share |
|---|---|---|
| Allergy & Immunology Physician | 101 | 6.1% |
| Internal Medicine Physician | 79 | 4.8% |
| Pediatrics Physician | 78 | 4.7% |
| Pediatric Allergy/Immunology Physician | 51 | 3.1% |
| Allergy & Immunology (Internal Medicine) Physician | 42 | 2.5% |
| Student in an Organized Health Care Education/Training Program | 22 | 1.3% |
| Specialist | 21 | 1.3% |
| Clinical & Laboratory Immunology (Allergy & Immunology) Physician | 20 | 1.2% |
Nearby specialties
Other taxonomies NUCC files under Allergy & Immunology.
Looking up a specific provider
These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.
Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.