Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arpi Isayan

Clinical Social Worker in Northridge, CA · enumerated 2020.

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

National Provider Identifier

1881234227

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Registry record

Entity type Individual (Type 1)

Name Arpi Isayan

Sex Female

Practice address 17301 Knapp St, Northridge, CA, 91325

Phone (424) 281-4452

Enumeration date Jan 14, 2020

Last updated in NPPES Apr 22, 2025

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License ASW83856 (CA) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW114572 (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

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 Arpi Isayan?

Arpi Isayan 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-22.