Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Barbara Slaymaker, MS- CCC-A

Audiologist in Union City, CA · enumerated 2006 · practices at Kaiser Foundation Health Plan Inc.

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

National Provider Identifier

1902971096

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Registry record

Entity type Individual (Type 1)

Name Barbara Slaymaker

Credential MS- CCC-A

Sex Female

Practice address 3553 Whipple Rd, Union City, CA, 94587

Phone (510) 675-2001

Enumeration date Nov 22, 2006

Last updated in NPPES Dec 30, 2021

Taxonomy & licenses

237600000X Audiologist-Hearing Aid Fitter Speech, Language and Hearing Service Providers · License HA3366 (CA) Secondary

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AU1496 (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

What is the NPI number for Barbara Slaymaker?

The National Provider Identifier (NPI) for Barbara Slaymaker is 1902971096, a Type 1 (individual) record in the CMS NPPES registry.

Where does Barbara Slaymaker practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-12-30.