Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Katherine Elizabeth Ruoff, AUD

Audiologist in Phoenixville, PA · enumerated 2025.

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

National Provider Identifier

1457236671

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Registry record

Entity type Individual (Type 1)

Name Dr. Katherine Elizabeth Ruoff

Credential AUD

Sex Female

Practice address 826 Main St Ste 201, Phoenixville, PA, 19460

Phone (610) 415-1100

Enumeration date Aug 7, 2025

Last updated in NPPES Aug 7, 2025

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AT007060 (PA) 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

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.

What specialty is Katherine Ruoff?

Katherine Ruoff is registered in NPPES with the primary taxonomy of Audiologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-08-07.