207R00000X
Internal Medicine Allergy & Immunology Taxonomy Code 207RA0201X
207RA0201X
Level III - Area of Specialization
1,311Registered providers
11Medicare specialty
26.0NUCC version
49States & territories
Definition
An internist doctor of osteopathy that specializes in the treatment of allergy and immunologic disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine can obtain a Certificate of Special Qualifications in the field of Allergy & Immunology.
Code Details for 207RA0201X
About Taxonomy Code 207RA0201X
The taxonomy code 207RA0201X identifies Internal Medicine Allergy & Immunology within the Allopathic & Osteopathic Physicians provider grouping. It is a Level III — Area of Specialization code, the most specific tier: it narrows the parent classification to a defined subspecialty.
NPI records show 1,311 registered providers whose primary or secondary taxonomy is this code. Of these, 340 (26%) are registered as organizations and 971 (74%) as individual providers. The states with the most internal medicine allergy & immunology providers are California (185), New York (121), Texas (118). For Medicare enrollment, it crosswalks to specialty code 11 (Physician/Internal Medicine).
Taxonomy codes are self-selected by the provider based on their education and training; they describe the provider's type and specialty, not the specific services rendered.
Provider Composition & Statistics
1,311Total providers
340Organizations 26%
971Individuals 74%
427Female
544Male
Gender is recorded for individual providers only; organizations are not gendered. Source: NPPES, last updated 2026-07-12T00:00:00.
View all 1,311 providersInternal Medicine Allergy & Immunology Providers by State
Provider counts by U.S. state and territory. Select a state to open its provider directory.
All states (nationwide)
1,311
Alabama6Arizona22Arkansas7California185Colorado28Connecticut17Delaware4District Of Columbia12Florida62Georgia27Hawaii3Idaho2Illinois72Indiana20Iowa9Kansas12Kentucky18Louisiana11Maine2Maryland55Massachusetts53Michigan38Minnesota23Mississippi7Missouri37Montana1Nebraska5Nevada5New Hampshire6New Jersey38New Mexico4New York121North Carolina30North Dakota3Ohio27Oklahoma7Oregon8Pennsylvania53Puerto Rico6South Carolina11South Dakota10Tennessee22Texas118Utah5Virginia26Washington22West Virginia2Wisconsin31Wyoming3
Frequently Asked Questions
207RA0201X questionsNPPES lists 1,311 registered providers with this taxonomy code (Internal Medicine Allergy & Immunology).
Both. About 26% of these providers are registered as organizations and 74% as individuals.
It crosswalks to Medicare specialty code 11 (Physician/Internal Medicine).
It is a Level III - Area of Specialization code in the NUCC Health Care Provider Taxonomy set. As an area of specialization, it falls under the Internal Medicine classification (parent code 207R00000X).
Use the "Providers by state" directory on this page to open the list of internal medicine allergy & immunology providers registered in any U.S. state.
Source: National Uniform Claim Committee (NUCC) Health Care Provider Taxonomy code set, Version 26.0. Provider counts from NPPES. See nucc.org.
