Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gretchen Switzer, AU.D.

Audiologist-Hearing Aid Fitter in Chattanooga, TN · enumerated 2008.

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

National Provider Identifier

1992960470

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Registry record

Entity type Individual (Type 1)

Name Gretchen Switzer

Credential AU.D.

Sex Female

Practice address 2212 Encompass Dr Ste 148, Chattanooga, TN, 37421

Phone (423) 635-7733

Fax (713) 344-9420

Enumeration date Jul 23, 2008

Last updated in NPPES Aug 22, 2022

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License 2125 (TN) Secondary

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AUD4036 (ID) Secondary

237600000X Audiologist-Hearing Aid Fitter Speech, Language and Hearing Service Providers · License 80924 (TX) 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.

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Frequently asked questions

What specialty is Gretchen Switzer?

Gretchen Switzer is registered in NPPES with the primary taxonomy of Audiologist-Hearing Aid Fitter. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-22.