Chaparral Medical Group Inc
NPI 1144282732 · Rheumatology Physician · Upland, CA
Chaparral Medical Group Inc is a Rheumatology Physician organization in Upland, CA (NPI 1144282732).
Provider details
- NPI number
- 1144282732
- Entity type
- Organization
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Adrienne Walker, Contracts Administrator(909) 398-1550
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-04-06
- Last updated
- 2007-10-10
Frequently asked questions
- What is Chaparral Medical Group Inc's NPI number?
- Chaparral Medical Group Inc's National Provider Identifier (NPI) is 1144282732, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Chaparral Medical Group Inc?
- Chaparral Medical Group Inc is classified in the NPPES registry as Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Chaparral Medical Group Inc located?
- Chaparral Medical Group Inc's practice location on file with NPPES is 1330 East San Bernardino Rd, Upland, CA 91786-4980.
- What is Chaparral Medical Group Inc's phone number?
- The practice phone number listed in the NPPES registry for Chaparral Medical Group Inc is (909) 931-0228.
- Who is the authorized official for Chaparral Medical Group Inc?
- The authorized official listed on Chaparral Medical Group Inc's NPPES record is Adrienne Walker, Contracts Administrator. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Chaparral Medical Group Inc's NPI active?
- Yes — Chaparral Medical Group Inc's NPI (1144282732) is active in the NPPES registry as of the last update on 2007-10-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.