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Gastroenterology Atlanta, LLC

Gastroenterology Physician in Roswell, GA · enumerated 2006 · authorized official William Lyday, Owner.

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

National Provider Identifier

1891737532

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Registry record

Entity type Organization (Type 2)
Legal business name Gastroenterology Atlanta, LLC
Practice address 2006 Macy Dr, Roswell, GA, 30076
Phone (404) 257-0000
Enumeration date Jun 10, 2006
Last updated in NPPES Apr 10, 2023

Taxonomy & classification

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 008698 (GA) Primary

Authorized official

Name William Lyday
Title Owner
Phone (770) 400-6041

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 a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is Gastroenterology Atlanta, LLC?
Gastroenterology Atlanta, LLC is registered in NPPES as a Gastroenterology Physician (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-04-10.