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

Hallie Nguyen, O.D.

Optometrist in Fairfax, VA · enumerated 2010.

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

National Provider Identifier

1548582687

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Registry record

Entity type Individual (Type 1)

Name Hallie Nguyen

Credential O.D.

Sex Female

Practice address Fairfax, VA, 22033

Phone (703) 385-1660

Enumeration date Feb 16, 2010

Last updated in NPPES May 12, 2010

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

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 0618001898 (VA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Hallie Nguyen practice?

The practice location on file with NPPES is in Fairfax, VA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Hallie Nguyen?

The National Provider Identifier (NPI) for Hallie Nguyen is 1548582687, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-05-12.