Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Hai Trieu Truong, DMD

Endodontics in Grass Valley, CA · enumerated 2017.

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

National Provider Identifier

1588198386

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Registry record

Entity type Individual (Type 1)

Name Dr. Hai Trieu Truong

Credential DMD

Sex Male

Practice address 1364 Whispering Pines Ln Ste 2, Grass Valley, CA, 95945

Phone (530) 272-4255

Enumeration date Apr 18, 2017

Last updated in NPPES Mar 24, 2023

Taxonomy & licenses

122300000X Dentist Dental Providers · License 04514 (NH) Secondary

122300000X Dentist Dental Providers · License DN1857830 (MA) Secondary

1223E0200X Endodontics Dental Providers · License 33452 (TX) Secondary

1223G0001X General Practice Dentistry Dental Providers · License DS041456 (PA) Secondary

1223E0200X Endodontics Dental Providers · License DDS108122 (CA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Hai Truong?

Hai Truong is registered in NPPES with the primary taxonomy of Endodontics. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-24.