Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ms. Sara Frances Okabayashi-Williams, FNP

Family Nurse Practitioner in Daly City, CA · enumerated 2006.

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

National Provider Identifier

1427169762

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Registry record

Entity type Individual (Type 1)

Name Ms. Sara Frances Okabayashi-Williams

Credential FNP

Sex Female

Practice address 380 90th St, Daly City, CA, 94015

Phone (650) 301-8406

Fax (650) 301-8626

Enumeration date Aug 31, 2006

Last updated in NPPES Jul 10, 2012

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F334934-1 (NY) Secondary

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 20390 (CA) Primary

FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Sara Okabayashi-Williams?

The National Provider Identifier (NPI) for Sara Okabayashi-Williams is 1427169762, a Type 1 (individual) record in the CMS NPPES registry.

Where does Sara Okabayashi-Williams practice?

The practice location on file with NPPES is in Daly City, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-07-10.