NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Miss Diana Thanh Nguyen, PHARMD

Student in an Organized Health Care Education/Training Program in San Diego, CA · enumerated 2011.

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

National Provider Identifier

1538450523

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Miss Diana Thanh Nguyen
Credential PHARMD
Sex Female
Practice address San Diego, CA, 92037
Phone (858) 822-6094
Enumeration date Apr 25, 2011
Last updated in NPPES Oct 11, 2019

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Primary
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1538450523 active?
Yes, as of the latest NPPES snapshot, NPI 1538450523 is active (record last updated 2019-10-11).
How do I verify Diana Nguyen's NPI record?
Cross-check NPI 1538450523 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-10-11.