Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Diana H. P. Nguyen, O.D.
Optometrist in Tacoma, WA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1013213123
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Registry record
Entity type Individual (Type 1)
Name Dr. Diana H. P. Nguyen
Credential O.D.
Sex Female
Practice address 4051 Tacoma Mall Blvd, Tacoma, WA, 98409
Phone (253) 476-2874
Enumeration date Feb 7, 2011
Last updated in NPPES Feb 7, 2014
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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
Where does Diana Nguyen practice?
The practice location on file with NPPES is in Tacoma, WA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Diana Nguyen?
The National Provider Identifier (NPI) for Diana Nguyen is 1013213123, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-02-07.