Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Brian L Nguyen, DMD
Dentist in Duncan, OK · enumerated 2017.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1518484815
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Registry record
Entity type Individual (Type 1)
Name Brian L Nguyen
Credential DMD
Sex Male
Practice address 1408 N Highway 81, Duncan, OK, 73533
Phone (580) 252-2056
Fax (580) 252-2051
Enumeration date Aug 28, 2017
Last updated in NPPES Jul 21, 2022
Taxonomy & licenses
DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees.
About the DMD 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 Brian Nguyen?
Brian Nguyen is registered in NPPES with the primary taxonomy of Dentist. 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 2022-07-21.