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Chaparral Medical Group, Inc.

Gastroenterology Physician in Pomona, CA · enumerated 2013 · authorized official Adrienne Walker, Contracts Manager.

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

National Provider Identifier

1053650994

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Registry record

Entity type Organization (Type 2)
Legal business name Chaparral Medical Group, Inc.
Practice address 1900 Royalty Dr, Suite # 205, Pomona, CA, 91767
Phone (909) 622-1963
Fax (909) 622-1995
Enumeration date Feb 13, 2013
Last updated in NPPES Aug 28, 2013

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary
207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians Secondary
207RC0001X Clinical Cardiac Electrophysiology Physician Allopathic & Osteopathic Physicians Secondary
207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians Primary
207RI0008X Hepatology Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

Name Adrienne Walker
Title Contracts Manager
Phone (909) 398-1550

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 Chaparral Medical Group, Inc.?
Chaparral Medical Group, Inc. 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 2013-08-28.