Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Ellen Blair Baker, AUD

Audiologist in Simi Valley, CA · enumerated 2007.

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

National Provider Identifier

1336287655

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Registry record

Entity type Individual (Type 1)

Name Mrs. Ellen Blair Baker

Credential AUD

Sex Female

Practice address 2655 1st St, Suite # 170, Simi Valley, CA, 93065

Phone (805) 584-3327

Fax (805) 584-3329

Enumeration date Feb 1, 2007

Last updated in NPPES May 4, 2016

Taxonomy & licenses

231H00000X Audiologist Speech, Language and Hearing Service Providers · License AU1107 (CA) Primary

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

Other identifiers

Identifier	Type	State	Issuer
AU1107	Other	CA	LICENSE

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

Is NPI 1336287655 active?

Yes, as of the latest NPPES snapshot, NPI 1336287655 is active (record last updated 2016-05-04).

How do I verify Ellen Baker's NPI record?

Cross-check NPI 1336287655 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-05-04.