Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John Garnache, RDH

Dental Hygienist in San Diego, CA · enumerated 2008.

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

National Provider Identifier

1235396516

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Registry record

Entity type Individual (Type 1)

Name John Garnache

Credential RDH

Sex Male

Practice address 823 Gateway Center Way, San Diego, CA, 92102

Phone (619) 515-2300

Fax (619) 232-1360

Enumeration date May 22, 2008

Last updated in NPPES May 22, 2008

Taxonomy & licenses

124Q00000X Dental Hygienist Dental Providers · License 23392 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for John Garnache?

The National Provider Identifier (NPI) for John Garnache is 1235396516, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Garnache practice?

The practice location on file with NPPES is in San Diego, CA. Providers can have multiple locations; NPPES lists the primary practice address.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-22.