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Joan E Retterer, FNP

Family Nurse Practitioner in Montour Falls, NY · enumerated 2008 · practices at Schuyler Sleep Physicians.

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

National Provider Identifier

1851561724

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Registry record

Entity type Individual (Type 1)
Name Joan E Retterer
Credential FNP
Sex Female
Practice address 230 Steuben St, Montour Falls, NY, 14865
Phone (607) 535-7154
Fax (607) 535-7157
Enumeration date Mar 7, 2008
Last updated in NPPES Mar 7, 2008

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 333068 (NY) Primary
FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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.

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Frequently asked questions

How do I verify Joan Retterer's NPI record?
Cross-check NPI 1851561724 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1851561724 active?
Yes, as of the latest NPPES snapshot, NPI 1851561724 is active (record last updated 2008-03-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-03-07.