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Certified Allergy, Asthma, and Immunology Specialists

Allergy & Immunology Physician in Enid, OK · enumerated 2015 · authorized official Timothy Trojan, Owner.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1386035285

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Registry record

Entity type Organization (Type 2)
Legal business name Certified Allergy, Asthma, and Immunology Specialists
Practice address 2821 N Van Buren St, Enid, OK, 73703
Phone (580) 213-9799
Fax (580) 234-2474
Enumeration date Feb 12, 2015
Last updated in NPPES Apr 28, 2015

Taxonomy & classification

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 29671 (OK) Primary

Authorized official

Name Timothy Trojan
Title Owner
Phone (580) 213-9799

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Who is the authorized official for Certified Allergy, Asthma, and Immunology Specialists?
NPPES lists Timothy Trojan (Owner) as the authorized official for this organization.
What is the NPI number for Certified Allergy, Asthma, and Immunology Specialists?
The NPI for Certified Allergy, Asthma, and Immunology Specialists is 1386035285, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-04-28.