Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Theo Nguyen
Pharmacist in Cerritos, CA · enumerated 2021.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1659035947
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Registry record
Entity type Individual (Type 1)
Name Theo Nguyen
Sex Male
Practice address 11525 South St, Cerritos, CA, 90703
Phone (562) 274-0064
Enumeration date Oct 24, 2021
Last updated in NPPES Oct 24, 2021
Taxonomy & licenses
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 Theo Nguyen?
Theo Nguyen is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-10-24.