Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ruth Warner Bass, MS, CCC-SLP

Speech-Language Pathologist in Newport Beach, CA · enumerated 2018.

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

National Provider Identifier

1528544616

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Registry record

Entity type Individual (Type 1)

Name Ruth Warner Bass

Credential MS, CCC-SLP

Sex Female

Practice address Newport Beach, CA, 92660

Phone (949) 422-0730

Enumeration date Jul 12, 2018

Last updated in NPPES Jul 12, 2018

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License 11413 (CA) Primary

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

How do I verify Ruth Bass's NPI record?

Cross-check NPI 1528544616 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1528544616 active?

Yes, as of the latest NPPES snapshot, NPI 1528544616 is active (record last updated 2018-07-12).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-07-12.