Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gretchen Claire Perkins, AUD

Audiologist in Palo Alto, CA · enumerated 2014.

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

National Provider Identifier

1407257843

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Registry record

Entity type Individual (Type 1)

Name Gretchen Claire Perkins

Credential AUD

Sex Female

Practice address 2452 Watson Ct, Suite 1500, Palo Alto, CA, 94303

Phone (650) 498-4327

Fax (650) 736-4327

Enumeration date Sep 4, 2014

Last updated in NPPES Sep 4, 2014

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AU2849 (CA) Primary

AUD · Doctor of Audiology: A licensed audiologist diagnosing and treating hearing and balance disorders. About the AUD 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

Where does Gretchen Perkins 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 Gretchen Perkins?

The National Provider Identifier (NPI) for Gretchen Perkins is 1407257843, 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 2014-09-04.