Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Nancy O'Connor-Perrone

Specialist in West Islip, NY · enumerated 2025.

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

National Provider Identifier

1649153255

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Registry record

Entity type Individual (Type 1)

Name Nancy O'Connor-Perrone

Sex Female

Practice address 589 Center Briarwood Ave, West Islip, NY, 11795

Phone (516) 313-1682

Enumeration date Jul 30, 2025

Last updated in NPPES Jul 30, 2025

Taxonomy & licenses

174400000X Specialist Other 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

Where does Nancy O'Connor-Perrone practice?

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

What is the NPI number for Nancy O'Connor-Perrone?

The National Provider Identifier (NPI) for Nancy O'Connor-Perrone is 1649153255, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-30.