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Chaparral Medical Group Inc

Rheumatology Physician in Upland, CA · enumerated 2006 · authorized official Adrienne Walker, Contracts Administrator.

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

National Provider Identifier

1144282732

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Registry record

Entity type Organization (Type 2)
Legal business name Chaparral Medical Group Inc
Practice address 1330 East San Bernardino Rd, Ste L, Upland, CA, 91786
Phone (909) 931-0228
Fax (909) 931-0145
Enumeration date Apr 6, 2006
Last updated in NPPES Oct 10, 2007

Taxonomy & classification

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians Primary
208100000X Physical Medicine & Rehabilitation Physician Allopathic & Osteopathic Physicians Secondary

Authorized official

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

Other identifiers

Identifier Type State Issuer
GR0052952 Medicaid CA -

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 Chaparral Medical Group Inc?
The NPI for Chaparral Medical Group Inc is 1144282732, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Chaparral Medical Group Inc?
NPPES lists Adrienne Walker (Contracts Administrator) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-10-10.