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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Josefina Sanchez Baca-Asher, PA-C

Physician Assistant in Redwood City, CA · enumerated 2009 · practices at Stanford University Medical Center.

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

National Provider Identifier

1477796688

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Registry record

Entity type Individual (Type 1)
Name Ms. Josefina Sanchez Baca-Asher
Credential PA-C
Sex Female
Practice address 450 Broadway St, Redwood City, CA, 94063
Phone (650) 250-2584
Fax (650) 721-3420
Enumeration date Apr 17, 2009
Last updated in NPPES Jun 3, 2019

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA53721 (CA) Primary

Other identifiers

Identifier Type State Issuer
PA53721 Other CA PHYSICIAN ASSISTANT LICENSE

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

How do I verify Josefina Baca-Asher's NPI record?
Cross-check NPI 1477796688 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1477796688 active?
Yes, as of the latest NPPES snapshot, NPI 1477796688 is active (record last updated 2019-06-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-06-03.