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Dr. Peter T Brennan, MD

Gastroenterology Physician in Ithaca, NY · enumerated 2006.

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

National Provider Identifier

1780655118

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Registry record

Entity type Individual (Type 1)
Name Dr. Peter T Brennan
Credential MD
Sex Male
Practice address 2 Ascot Pl, Ithaca, NY, 14850
Phone (607) 339-0788
Fax (607) 319-5529
Enumeration date Feb 1, 2006
Last updated in NPPES Aug 2, 2018

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 161989 (NY) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Peter Brennan's NPI record?
Cross-check NPI 1780655118 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1780655118 active?
Yes, as of the latest NPPES snapshot, NPI 1780655118 is active (record last updated 2018-08-02).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-02.