Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Katherine Ann Portugal, O.D.

Optometrist in Palo Alto, CA · enumerated 2006.

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

National Provider Identifier

1194838201

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Registry record

Entity type Individual (Type 1)

Name Dr. Katherine Ann Portugal

Credential O.D.

Sex Female

Practice address 3801 Miranda Ave, Palo Alto, CA, 94304

Phone (650) 493-5000

Enumeration date Aug 16, 2006

Last updated in NPPES Sep 10, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License CA12350T (CA) Primary

OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses. About the OD 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.

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Frequently asked questions

Where does Katherine Portugal practice?

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

What is the NPI number for Katherine Portugal?

The National Provider Identifier (NPI) for Katherine Portugal is 1194838201, 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 2007-09-10.