Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. David N Yang, O.D.

Corneal and Contact Management Optometrist in Palo Alto, CA · enumerated 2006.

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

National Provider Identifier

1851330179

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Registry record

Entity type Individual (Type 1)

Name Dr. David N Yang

Credential O.D.

Sex Male

Practice address 3801 Miranda Ave, Palo Alto, CA, 94304

Phone (650) 493-5000

Fax (650) 849-0145

Enumeration date Jun 5, 2006

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 10451T (CA) Secondary

152W00000X Optometrist Eye and Vision Services Providers · License 3179 (WA) Secondary

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 10451T (CA) Secondary

152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 3179 (WA) 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.

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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 David Yang?

David Yang is registered in NPPES with the primary taxonomy of Corneal and Contact Management 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 2025-09-11.