Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Werleight M De Montas Osias, PA

Physician Assistant in San Tan Valley, AZ · enumerated 2023.

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

National Provider Identifier

1548035611

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Registry record

Entity type Individual (Type 1)

Name Werleight M De Montas Osias

Credential PA

Sex Male

Practice address 29410 N Gold Ln, San Tan Valley, AZ, 85143

Phone (516) 410-5843

Enumeration date Nov 20, 2023

Last updated in NPPES Nov 20, 2023

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 9776 (AZ) Primary

PA · Physician Assistant: A licensed clinician who practices medicine in collaboration with physicians, trained in a graduate PA program. About the PA credential

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

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 Werleight M Osias?

Werleight M Osias is registered in NPPES with the primary taxonomy of Physician Assistant. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-20.