Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Hien Trinh, O.D.
Optometrist in Elk Grove, CA · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1508144353
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Registry record
Entity type Individual (Type 1)
Name Hien Trinh
Credential O.D.
Sex Female
Practice address 7119 Elk Grove Blvd, Ste 123, Elk Grove, CA, 95758
Phone (916) 683-5670
Fax (916) 684-2807
Enumeration date Jul 28, 2011
Last updated in NPPES Jul 1, 2016
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
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 Hien Trinh?
Hien Trinh is registered in NPPES with the primary taxonomy of Optometrist. 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 2016-07-01.