Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Yim Moon Leung

Social Worker in Livermore, CA · enumerated 2026.

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

National Provider Identifier

1134079221

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Registry record

Entity type Individual (Type 1)

Name Yim Moon Leung

Sex Female

Practice address 2441 Constitution Dr, Livermore, CA, 94551

Phone (925) 505-4700

Enumeration date Jan 29, 2026

Last updated in NPPES Jan 29, 2026

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers Primary

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 Yim Moon Leung?

Yim Moon Leung is registered in NPPES with the primary taxonomy of Social Worker. 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 2026-01-29.