Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Daniel Lieu, O.D.;

Optometrist in Phoenix, AZ · enumerated 2005.

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

National Provider Identifier

1952309650

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Registry record

Entity type Individual (Type 1)

Name Dr. Daniel Lieu

Credential O.D.;

Sex Male

Practice address 2423 W Dunlap Ave, Suite 180, Phoenix, AZ, 85021

Phone (602) 944-7642

Enumeration date Jul 7, 2005

Last updated in NPPES Dec 26, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 1144 (AZ) 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 Daniel Lieu?

Daniel Lieu 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 2007-12-26.