Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Arianna Mason

Social Worker in Winona, MN · enumerated 2026.

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

National Provider Identifier

1417863440

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Registry record

Entity type Individual (Type 1)

Name Arianna Mason

Sex Female

Practice address 51 E 3rd St Apt 201, Winona, MN, 55987

Phone (608) 354-7637

Enumeration date Aug 20, 2026

Last updated in NPPES Aug 20, 2026

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers 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 Arianna Mason?

Arianna Mason is registered in NPPES with the primary taxonomy of 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 2026-08-20.