Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Carolann O'Rourke, AUD

Audiologist in Thousand Oaks, CA · enumerated 2022.

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

National Provider Identifier

1447967740

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Registry record

Entity type Individual (Type 1)

Name Dr. Carolann O'Rourke

Credential AUD

Sex Female

Practice address 555 Marin St, Thousand Oaks, CA, 91360

Phone (818) 746-7655

Enumeration date Nov 4, 2022

Last updated in NPPES Nov 4, 2022

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AU1875 (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

What specialty is Carolann O'Rourke?

Carolann O'Rourke 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.

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 2022-11-04.