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Vivian Yu

Nurse Practitioner in Walnut Creek, CA · enumerated 2021.

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

National Provider Identifier

1255929980

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Registry record

Entity type Individual (Type 1)
Name Vivian Yu
Sex Female
Practice address 100 N Wiget Ln Ste 290, Walnut Creek, CA, 94598
Phone (925) 937-7740
Enumeration date Jan 7, 2021
Last updated in NPPES Oct 31, 2024

Taxonomy & licenses

163WC0200X Critical Care Medicine Registered Nurse Nursing Service Providers · License 95091387 (CA) Secondary
364SG0600X Gerontology Clinical Nurse Specialist Physician Assistants & Advanced Practice Nursing Providers · License 95019161 (CA) Secondary
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License NP95019161 (CA) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Vivian Yu?
Vivian Yu is registered in NPPES with the primary taxonomy of Nurse Practitioner. 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 2024-10-31.