Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alejandra Noemi Mazariegos

Clinical Social Worker in Commerce, CA · enumerated 2017.

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

National Provider Identifier

1568977452

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Registry record

Entity type Individual (Type 1)

Name Alejandra Noemi Mazariegos

Sex Female

Practice address 5400 E Olympic Blvd Fl Bvd1, Commerce, CA, 90022

Phone (323) 869-9255

Enumeration date Dec 13, 2017

Last updated in NPPES Oct 15, 2024

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 96358 (CA) Secondary

104100000X Social Worker Behavioral Health & Social Service Providers · License 96358 (CA) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 96358 (CA) Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 119152 (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

What specialty is Alejandra Mazariegos?

Alejandra Mazariegos 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.

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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-15.