Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mariel Ross

Q: What is the NPI number for Mariel Ross?

The National Provider Identifier (NPI) for Mariel Ross is 1417404450, a Type 1 (individual) record in the CMS NPPES registry.

Clinical Social Worker in Arleta, CA · enumerated 2016.

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

National Provider Identifier

1417404450

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Registry record

Entity type Individual (Type 1)

Name Mariel Ross

Sex Female

Practice address 13507 Chase St, Arleta, CA, 91331

Phone (818) 941-6206

Enumeration date Sep 7, 2016

Last updated in NPPES Nov 18, 2024

Taxonomy & licenses

171M00000X Case Manager/Care Coordinator Other Service Providers Secondary

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 119328 (CA) Primary

104100000X Social Worker Behavioral Health & Social Service Providers Secondary

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 is the NPI number for Mariel Ross?

The National Provider Identifier (NPI) for Mariel Ross is 1417404450, a Type 1 (individual) record in the CMS NPPES registry.

Where does Mariel Ross practice?

The practice location on file with NPPES is in Arleta, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-11-18.