Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Leanne Elizabeth Treacy, RN
Registered Nurse in Cortland, NY · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669741427
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Registry record
Entity type Individual (Type 1)
Name Mrs. Leanne Elizabeth Treacy
Credential RN
Sex Female
Practice address 20 Raymond Ave, Cortland, NY, 13045
Phone (607) 758-4154
Enumeration date Dec 23, 2011
Last updated in NPPES Dec 23, 2011
Taxonomy & licenses
RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam.
About the RN 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.
Frequently asked questions
Is NPI 1669741427 active?
Yes, as of the latest NPPES snapshot, NPI 1669741427 is active (record last updated 2011-12-23).
How do I verify Leanne Treacy's NPI record?
Cross-check NPI 1669741427 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-12-23.