Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mr. Ian Joseph Donahue, PA-C
Physician Assistant in Upland, CA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1023406725
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Registry record
Entity type Individual (Type 1)
Name Mr. Ian Joseph Donahue
Credential PA-C
Sex Male
Practice address 1310 San Bernardino Rd, Ste. 103, Upland, CA, 91786
Phone (909) 920-0444
Fax (909) 920-5044
Enumeration date Jan 3, 2015
Last updated in NPPES Jan 3, 2015
Taxonomy & licenses
363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 51838 (CA) Primary
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 Ian Donahue?
Ian Donahue is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-01-03.