NPI Portal NPI Lookup & Verification

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

Mr. Grant Kono, LCSW

Clinical Social Worker in Yucaipa, CA · enumerated 2006.

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

National Provider Identifier

1255420378

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Registry record

Entity type Individual (Type 1)
Name Mr. Grant Kono
Credential LCSW
Sex Male
Practice address Yucaipa, CA, 92399
Phone (909) 266-1050
Fax (909) 266-1595
Enumeration date Oct 12, 2006
Last updated in NPPES Mar 31, 2020

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

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCS19834 (CA) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier Type State Issuer
11331840 Other CA CAQH

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 Grant Kono?
The National Provider Identifier (NPI) for Grant Kono is 1255420378, a Type 1 (individual) record in the CMS NPPES registry.
Where does Grant Kono practice?
The practice location on file with NPPES is in Yucaipa, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-03-31.