Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Justina Aguirre Antonio, PA

Physician Assistant in Stamford, CT · enumerated 2007.

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

National Provider Identifier

1881733103

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Registry record

Entity type Individual (Type 1)

Name Justina Aguirre Antonio

Credential PA

Sex Female

Practice address 80 Mill River St, Stamford, CT, 06902

Phone (203) 348-7410

Enumeration date Feb 5, 2007

Last updated in NPPES Dec 2, 2010

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 001391 (CT) Primary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License 007274-1 (NY) Secondary

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 NPI 1881733103 active?

Yes, as of the latest NPPES snapshot, NPI 1881733103 is active (record last updated 2010-12-02).

How do I verify Justina Antonio's NPI record?

Cross-check NPI 1881733103 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-12-02.