Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Diana Barillas, LMSW

Social Worker in Mason City, IA · enumerated 2023.

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

National Provider Identifier

1568234599

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Registry record

Entity type Individual (Type 1)

Name Diana Barillas

Credential LMSW

Sex Female

Practice address 1000 4th St Sw, Mason City, IA, 50401

Phone (641) 428-7797

Enumeration date Oct 24, 2023

Last updated in NPPES Oct 24, 2023

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 078194 (IA) 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.

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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 Diana Barillas?

Diana Barillas 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-24.