Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Andrea J Liu, O.D., F.A.A.O

Optometrist in Oakland, CA · enumerated 2014.

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

National Provider Identifier

1215343017

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Registry record

Entity type Individual (Type 1)

Name Dr. Andrea J Liu

Credential O.D., F.A.A.O

Sex Female

Practice address 3772 Howe St, Oakland, CA, 94611

Phone (510) 752-5600

Enumeration date Jul 1, 2014

Last updated in NPPES Jan 26, 2023

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 6295 (OH) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 15335 (CA) 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

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 Andrea Liu?

Andrea 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-01-26.