Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Annabelle Delight Hartshorn, ASW

Social Worker in Mission Viejo, CA · enumerated 2024.

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

National Provider Identifier

1528839982

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Registry record

Entity type Individual (Type 1)

Name Annabelle Delight Hartshorn

Credential ASW

Sex Female

Practice address 23228 Madero, Mission Viejo, CA, 92691

Phone (949) 454-3959

Enumeration date Jan 12, 2024

Last updated in NPPES Jan 17, 2024

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 110880 (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

How do I verify Annabelle Hartshorn's NPI record?

Cross-check NPI 1528839982 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1528839982 active?

Yes, as of the latest NPPES snapshot, NPI 1528839982 is active (record last updated 2024-01-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-01-17.