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Internal Medicine Medical Group

Family Medicine Physician in Rancho Cucamonga, CA · enumerated 2007 · authorized official Adrienne Walker, Contracts Manager.

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

National Provider Identifier

1144423468

Verified

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Registry record

Entity type Organization (Type 2)
Legal business name Internal Medicine Medical Group
Practice address 10837 Laurel Avenue, Internal Medicine Medical Group Suite 104, Rancho Cucamonga, CA, 91730
Phone (909) 581-6732
Fax (909) 581-6737
Enumeration date Jun 6, 2007
Last updated in NPPES Sep 11, 2025

Taxonomy & classification

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians Primary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Secondary
207RE0101X Endocrinology, Diabetes & Metabolism 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Internal Medicine Medical Group?
The NPI for Internal Medicine Medical Group is 1144423468, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Internal Medicine Medical Group?
NPPES lists Adrienne Walker (Contracts Manager) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.