Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tracey Castelli

Obstetrics & Gynecology Physician in West Islip, NY · enumerated 2024 · practices at South Bay Obgyn PC.

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

National Provider Identifier

1659103463

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Registry record

Entity type Individual (Type 1)

Name Tracey Castelli

Sex Female

Practice address 320 Montauk Hwy, West Islip, NY, 11795

Phone (631) 587-2500

Enumeration date Aug 19, 2024

Last updated in NPPES Aug 19, 2024

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License F354388-01 (NY) 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

Is NPI 1659103463 active?

Yes, as of the latest NPPES snapshot, NPI 1659103463 is active (record last updated 2024-08-19).

How do I verify Tracey Castelli's NPI record?

Cross-check NPI 1659103463 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 2024-08-19.