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

Ms. Joni Diamond, LCSW

Clinical Social Worker in Granada Hills, CA · enumerated 2011.

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

National Provider Identifier

1407146277

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Ms. Joni Diamond

Credential LCSW

Sex Female

Practice address Granada Hills, CA, 91344

Phone (818) 470-7346

Fax (818) 832-9941

Enumeration date Apr 14, 2011

Last updated in NPPES Jul 15, 2022

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 LCS11876 (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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1407146277 active?

Yes, as of the latest NPPES snapshot, NPI 1407146277 is active (record last updated 2022-07-15).

How do I verify Joni Diamond's NPI record?

Cross-check NPI 1407146277 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-15.