Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
James Louis Gillilland, DO
Allergy Physician in Mesa, AZ · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1326008707
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Registry record
Entity type Individual (Type 1)
Name James Louis Gillilland
Credential DO
Sex Male
Practice address 1131 N York Cir, Mesa, AZ, 85213
Phone (480) 964-4190
Enumeration date Mar 28, 2006
Last updated in NPPES Jun 3, 2011
Taxonomy & licenses
207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License 01610 (IA) Secondary
DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD.
About the DO credential
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.
Frequently asked questions
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is James Gillilland?
James Gillilland is registered in NPPES with the primary taxonomy of Allergy Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-06-03.