Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sarah Claire Diebold, LCSW

Clinical Social Worker in Montclair, CA · enumerated 2008.

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

National Provider Identifier

1174799449

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Registry record

Entity type Individual (Type 1)

Name Sarah Claire Diebold

Credential LCSW

Sex Female

Practice address 9916 Central Ave, Montclair, CA, 91763

Phone (909) 450-2502

Enumeration date May 6, 2008

Last updated in NPPES Aug 4, 2022

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW2084 (CA) Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care · License LCSW29084 (CA) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW29084 (CA) Primary

LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

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

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.

What specialty is Sarah Diebold?

Sarah Diebold is registered in NPPES with the primary taxonomy of Clinical Social Worker. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-08-04.