CHAPARRAL MEDICAL GROUP, INC.
NPI 1558689794
Dermatology in Upland, CA

Active since May 12, 2010
585 N MOUNTAIN AVE, SUITE C, UPLAND, CA 91786(909) 981-8599(909) 981-5441 Get Directions Write a Review

NPPES record last updated: November 11, 2010. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Chaparral Medical Group, Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHAPARRAL MEDICAL GROUP, INC. (NPI 1558689794) is a healthcare organization registered as a dermatology in Upland, California and active in the NPI registry since May 2010. The organization lists Adrienne Walker, Contracts Manager, as its authorized official.

NPPES Registry Identity

NPI1558689794
Entity TypeOrganization
Primary Taxonomy207N00000X
Legal Business NameCHAPARRAL MEDICAL GROUP, INC.
Location Address585 N MOUNTAIN AVE, SUITE CUpland, CA 91786-8516
Mailing Address840 Towne Center DrPomona, CA 91767-5900 · (909) 398-1550 · Fax (909) 398-1573
Fax(909) 981-5441
Organization SubpartNo
Authorized OfficialAdrienne WalkerContracts Manager · (909) 398-1550
Enumeration DateMay 12, 2010
Last NPPES UpdateNovember 11, 2010
✔ NPI 1558689794 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
585 N MOUNTAIN AVE, Upland, CA 91786

Other Identifiers 1

Medicare PINZZZ02043ZCA

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Chaparral Medical Group, Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

99

Medicare enrollment records show 99 clinicians reassign Medicare billing to Chaparral Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 1 practice at this address and 73 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 22

Internal Medicine21
Nurse Practitioner15
Cardiovascular Disease (Cardiology)9
Pulmonary Disease7
Family Practice6
Dermatology4
Endocrinology4
General Surgery4
14 other specialties29

Nearest to this location (20)

See all 99
Nurse Practitioner
NPI 1942601281
585 N MOUNTAIN AVE SUITE A
Upland, CA 91786
(909) 946-2228
✔ PECOSSame address
Cardiovascular Disease (Cardiology)
NPI 1669519500
914 W FOOTHILL BLVD STE A
Upland, CA 91786
(909) 285-6717
✔ PECOS✔ Accepts Medicare0.5 mi
1131 W 6TH ST STE 150
Ontario, CA 91762
(909) 482-4462
✔ PECOS✔ Accepts Medicare1.3 mi
Family Practice
NPI 1356359277
330 N D ST STE 300
San Bernardino, CA 92401
(909) 888-6602
✔ PECOS1.4 mi
Gastroenterology
NPI 1760451298
811 E 11TH ST STE 208
Upland, CA 91786
(909) 982-2279
✔ PECOS✔ Accepts Medicare1.8 mi
General Surgery
NPI 1275630568
901 SAN BERNARDINO RD STE 301
Upland, CA 91786
(909) 946-6221
✔ PECOS✔ Accepts Medicare1.8 mi
Pulmonary Disease
NPI 1154390391
1601 MONTE VISTA AVE STE 270
Claremont, CA 91711
(909) 865-9152
✔ PECOS✔ Accepts Medicare1.8 mi
Pediatric Medicine
NPI 1912967894
430 W BASELINE RD
Claremont, CA 91711
(909) 621-3916
✔ PECOS3.2 mi
Internal Medicine
NPI 1497723803
790 EAST BONITA AVE 2ND FLOOR
Pomona, CA 91767
(909) 447-8585
✔ PECOS✔ Accepts Medicare3.9 mi
Interventional Cardiology
NPI 1881005809
790 E BONITA AVE FL 2
Pomona, CA 91767
(909) 447-8585
✔ PECOS✔ Accepts Medicare3.9 mi
Cardiac Surgery
NPI 1124322086
1940 N ORANGE GROVE AVE STE B
Pomona, CA 91767
(909) 865-9099
✔ PECOS✔ Accepts Medicare4.7 mi
Endocrinology
NPI 1821058470
1904 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 469-1823
✔ PECOS✔ Accepts Medicare4.8 mi
Rheumatology
NPI 1649248782
1904 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 469-1823
✔ PECOS✔ Accepts Medicare4.8 mi
Nurse Practitioner
NPI 1992185847
1880 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 620-7200
✔ PECOS4.8 mi
Cardiovascular Disease (Cardiology)
NPI 1144494550
1866 N ORANGE GROVE AVE SUITE 202
Pomona, CA 91767
(909) 623-8796
✔ PECOS✔ Accepts Medicare4.8 mi
Geriatric Medicine
NPI 1346218740
1880 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 620-7200
✔ PECOS✔ Accepts Medicare4.8 mi
Neurosurgery
NPI 1003995093
160 E ARTESIA ST SUITE 220
Pomona, CA 91767
(909) 865-1020
✔ PECOS5.0 mi
Orthopedic Surgery
NPI 1700819653
160 E ARTESIA ST SUITE # 360
Pomona, CA 91767
(909) 629-4604
✔ PECOS5.0 mi
Dermatology
NPI 1013150630
160 E ARTESIA ST STE 220
Pomona, CA 91767
(909) 865-1020
✔ PECOS✔ Accepts Medicare5.0 mi
Thoracic Surgery
NPI 1508215674
160 E ARTESIA ST STE 220
Pomona, CA 91767
(909) 865-9099
✔ PECOS✔ Accepts Medicare5.0 mi
See all 99 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Chaparral Medical Group, Inc.'s NPI number?

The NPI number for Chaparral Medical Group, Inc. is 1558689794. It was assigned to this organization in the NPPES registry on May 12, 2010.

Where is Chaparral Medical Group, Inc. located?

Chaparral Medical Group, Inc. is located at 585 N Mountain Ave Suite C, Upland, CA 91786. The listed phone number is (909) 981-8599.

What is Chaparral Medical Group, Inc.'s specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Chaparral Medical Group, Inc. enrolled in Medicare?

Yes. Chaparral Medical Group, Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Chaparral Medical Group, Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 99 clinicians in 22 Medicare specialties reassign their Medicare billing to Chaparral Medical Group, Inc.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. The largest specialties are Internal Medicine (21), Nurse Practitioner (15) and Cardiovascular Disease (Cardiology) (9). Of these, 1 practice at this address and 73 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Chaparral Medical Group, Inc. was last updated on November 11, 2010. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.