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Londonderry Gastroenterology Associates PA

Gastroenterology Physician in Derry, NH · enumerated 2015 · authorized official Mark Detweiler, Owner of Practice.

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

National Provider Identifier

1851782312

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Registry record

Entity type Organization (Type 2)
Legal business name Londonderry Gastroenterology Associates PA
Practice address 44 Birch St, Suite 206, Derry, NH, 03038
Phone (603) 818-4712
Fax (603) 965-4063
Enumeration date Feb 5, 2015
Last updated in NPPES Feb 5, 2015

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 6919 (NH) Primary

Authorized official

Name Mark Detweiler
Title Owner of Practice
Phone (603) 744-9430

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

What is the NPI number for Londonderry Gastroenterology Associates PA?
The NPI for Londonderry Gastroenterology Associates PA is 1851782312, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Londonderry Gastroenterology Associates PA?
NPPES lists Mark Detweiler (Owner of Practice) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-02-05.