Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jillian Leigh Mellon

Mental Health Counselor in Commack, NY · enumerated 2013.

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

National Provider Identifier

1669807418

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Registry record

Entity type Individual (Type 1)

Name Jillian Leigh Mellon

Sex Female

Practice address 368 Veterans Memorial Hwy, Commack, NY, 11725

Phone (631) 533-0315

Enumeration date Sep 12, 2013

Last updated in NPPES Jun 30, 2020

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers · License 006525 (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.

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Frequently asked questions

How do I verify Jillian Mellon's NPI record?

Cross-check NPI 1669807418 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1669807418 active?

Yes, as of the latest NPPES snapshot, NPI 1669807418 is active (record last updated 2020-06-30).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-06-30.