Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Lynn O'Neill

Q: What is the NPI number for Lynn O'Neill?

The National Provider Identifier (NPI) for Lynn O'Neill is 1356575609, a Type 1 (individual) record in the CMS NPPES registry.

Anesthesiology Physician in Huntington, NY · enumerated 2009.

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

National Provider Identifier

1356575609

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Registry record

Entity type Individual (Type 1)

Name Lynn O'Neill

Sex Female

Practice address Huntington, NY, 11743

Phone (631) 351-2785

Enumeration date May 14, 2009

Last updated in NPPES Jul 14, 2010

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207L00000X Anesthesiology Physician Allopathic & Osteopathic Physicians · License 246919 (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

Where does Lynn O'Neill practice?

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

What is the NPI number for Lynn O'Neill?

The National Provider Identifier (NPI) for Lynn O'Neill is 1356575609, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-14.