Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Allison Rae Kowalczyk, M.S.

Audiologist in Los Altos, CA · enumerated 2008 · practices at Pacific Hearing Clinic.

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

National Provider Identifier

1023278066

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Registry record

Entity type Individual (Type 1)

Name Mrs. Allison Rae Kowalczyk

Credential M.S.

Sex Female

Practice address 496 1st St, Suite 120, Los Altos, CA, 94022

Phone (650) 941-0664

Fax (650) 941-2892

Enumeration date Jun 12, 2008

Last updated in NPPES Jun 12, 2008

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License RPE 4611 (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 is the NPI number for Allison Kowalczyk?

The National Provider Identifier (NPI) for Allison Kowalczyk is 1023278066, a Type 1 (individual) record in the CMS NPPES registry.

Where does Allison Kowalczyk practice?

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

Other providers at this practice address

Browse all →

Pacific Hearing Clinic Audiologist-Hearing Aid Fitter · Los Altos, CA NPI 1407909062 Jennifer Lathrop Audiologist · Los Altos, CA NPI 1235279266 Brook Raguskus Audiologist · Los Altos, CA NPI 1073654331

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-12.