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Vivian Lo, PA-C

Physician Assistant in Concord, CA · enumerated 2012 · practices at Fred J Von Stieff MD A Professional Corporation.

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

National Provider Identifier

1003167453

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Registry record

Entity type Individual (Type 1)
Name Vivian Lo
Credential PA-C
Sex Female
Practice address 2481 Pacheco St, Concord, CA, 94520
Phone (925) 680-8933
Enumeration date Sep 25, 2012
Last updated in NPPES Sep 25, 2012

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA22434 (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.

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Frequently asked questions

Where does Vivian Lo practice?
The practice location on file with NPPES is in Concord, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Vivian Lo?
The National Provider Identifier (NPI) for Vivian Lo is 1003167453, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-09-25.