Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Halle Phuong Liu, O.D.

Optometrist in Plano, TX · enumerated 2006.

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

National Provider Identifier

1699797746

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Registry record

Entity type Individual (Type 1)

Name Dr. Halle Phuong Liu

Credential O.D.

Sex Female

Practice address 1701 Dallas Pkwy, Plano, TX, 75093

Phone (972) 713-7151

Enumeration date Jul 24, 2006

Last updated in NPPES Aug 12, 2021

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 6612TG (TX) 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

What specialty is Halle Liu?

Halle Liu 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.

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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-08-12.