Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Charles Ashley Barnett, M.S., CCC-SLP, HIS

Hearing Instrument Specialist in Stockton, CA · enumerated 2017.

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

National Provider Identifier

1982140968

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Registry record

Entity type Individual (Type 1)

Name Charles Ashley Barnett

Credential M.S., CCC-SLP, HIS

Sex Male

Practice address 3244 Brookside Rd, Suite 180, Stockton, CA, 95219

Phone (209) 951-6491

Fax (209) 951-6497

Enumeration date Jan 13, 2017

Last updated in NPPES Jan 13, 2017

Taxonomy & licenses

235Z00000X Speech-Language Pathologist Speech, Language and Hearing Service Providers · License SP 23067 (CA) Secondary

237700000X Hearing Instrument Specialist Speech, Language and Hearing Service Providers · License HA 8181 (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

What specialty is Charles Barnett?

Charles Barnett is registered in NPPES with the primary taxonomy of Hearing Instrument Specialist. 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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Jill Duthie Speech-Language Pathologist · Stockton, CA NPI 1447593900

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-01-13.