CHAPARRAL MEDICAL GROUP, INC.
NPI 1346639952
Internal Medicine - Cardiovascular Disease in Rancho Cucamonga, CA

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

The NPI number for Chaparral Medical Group, Inc. is 1346639952. It was assigned to this organization in the NPPES registry on January 20, 2015.

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

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Active since January 20, 2015

8330 RED OAK ST STE 101, RANCHO CUCAMONGA, CA 91730(909) 987-4922(909) 466-1190 Get Directions Write a Review

NPPES record last updated: February 24, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Mar 1, 2023, Dec 21, 2022, Feb 14, 2019 (3 updates tracked since 2019).

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About Chaparral Medical Group, Inc. NPPES

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

CHAPARRAL MEDICAL GROUP, INC. (NPI 1346639952) is a healthcare organization registered as a cardiovascular disease in Rancho Cucamonga, California and active in the NPI registry since January 2015. The organization maintains a secondary practice location in Rancho Cucamonga and lists Prasad A Jeereddi, Ceo, as its authorized official.

NPPES Registry Identity

NPI1346639952

Entity TypeOrganization

Primary Taxonomy207RC0000X

Legal Business NameCHAPARRAL MEDICAL GROUP, INC.

Location Address8330 RED OAK ST STE 101Rancho Cucamonga, CA 91730-0603

Mailing Address840 Towne Center DrPomona, CA 91767-5900 · (909) 398-1550 · Fax (909) 398-1488

Phone(909) 987-4922

Fax(909) 466-1190

Organization SubpartNo

Authorized OfficialPrasad A JeereddiCeo · (909) 398-1550

Enumeration DateJanuary 20, 2015

Last NPPES UpdateFebruary 24, 20263 updates tracked since enumeration

NPPES CertifiedFebruary 24, 2026

✔ NPI 1346639952 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 10

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

Also ListedCase Manager/Care CoordinatorTaxonomy 171M00000X

Also ListedFamily MedicineTaxonomy 207Q00000X

Also ListedInternal MedicineTaxonomy 207R00000X

Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X

Also ListedInternal Medicine · Geriatric MedicineTaxonomy 207RG0300X

Also ListedInternal Medicine · Pulmonary DiseaseTaxonomy 207RP1001X

Also ListedInternal Medicine · Sleep MedicineTaxonomy 207RS0012X

Also ListedNuclear Medicine · Nuclear CardiologyTaxonomy 207UN0901X

Also ListedSupports BrokerageTaxonomy 251X00000X

8330 RED OAK ST STE 101, Rancho Cucamonga, CA 91730

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Secondary Practice Location 1

Location 18330 Red Oak St Ste 201Rancho Cucamonga, CA 91730-0603 · Phone (909) 987-2528

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

Medicare enrollment records show 99 clinicians reassign Medicare billing to Chaparral Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 8 practice at this address and 32 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

Paul Kim

Nurse Practitioner

NPI 1356208409

8330 RED OAK ST STE 201
Rancho Cucamonga, CA 91730

(909) 987-2528

✔ PECOS✔ Accepts MedicareSame address

Aftab Qadir, MD

Internal Medicine

NPI 1851753545

8330 RED OAK ST STE 201
Rancho Cucamonga, CA 91730

(909) 987-2528

✔ PECOS✔ Accepts MedicareSame address

Khader Abounasr, MD

Pulmonary Disease

NPI 1780884015

8330 RED OAK ST SUITE 201
Rancho Cucamonga, CA 91730

(909) 987-2528

✔ PECOS✔ Accepts MedicareSame address

Harvey Cohen, MD

Internal Medicine

NPI 1972517423

8330 RED OAK ST STE 201
Rancho Cucamonga, CA 91730

(909) 987-2528

✔ PECOS✔ Accepts MedicareSame address

Haritha Alla, M.D.

Cardiovascular Disease (Cardiology)

NPI 1487739835

8330 RED OAK ST STE 101
Rancho Cucamonga, CA 91730

(909) 987-4922

✔ PECOS✔ Accepts MedicareSame address

Annie Nguyen, NP

Nurse Practitioner

NPI 1992580559

8330 RED OAK ST STE 101
Rancho Cucamonga, CA 91730

(909) 987-4922

✔ PECOSSame address

Lydia Reyes, NP

Nurse Practitioner

NPI 1447552229

8330 RED OAK STREET STE 101
Rancho Cucamonga, CA 91730

(909) 987-4922

✔ PECOSSame address

Nyein Tint, M.D.

Internal Medicine

NPI 1336533447

8330 RED OAK ST STE 201
Rancho Cucamonga, CA 91730

(909) 987-2528

✔ PECOS✔ Accepts MedicareSame address

Ani Berberyan, M.D.

Family Practice

NPI 1700230224

9140 HAVEN AVE STE 112
Rancho Cucamonga, CA 91730

(909) 296-7800

✔ PECOS1.1 mi

Nancy Meng, NP-C

Nurse Practitioner

NPI 1760134852

9170 HAVEN AVE STE 120
Rancho Cucamonga, CA 91730

(909) 476-8700

✔ PECOS✔ Accepts Medicare1.1 mi

Kavoos Nazeri, M.D.

Rheumatology

NPI 1477731644

9170 HAVEN AVE STE 120
Rancho Cucamonga, CA 91730

(909) 466-0550

✔ PECOS✔ Accepts Medicare1.1 mi

Johnnie Woodson, M.D.

Dermatology

NPI 1780727750

9190 HAVEN AVE STE 210
Rancho Cucamonga, CA 91730

(909) 466-7779

✔ PECOS✔ Accepts Medicare1.1 mi

Maria Velma Yep, DNP, APRN, GNP-BC

Nurse Practitioner

NPI 1316090103

9190 HAVEN AVE STE 102
Rancho Cucamonga, CA 91730

(909) 527-8110

✔ PECOS1.1 mi

Donna Dudziak, M.D.

General Surgery

NPI 1275630568

901 SAN BERNARDINO RD STE 301
Upland, CA 91786

(909) 946-6221

✔ PECOS✔ Accepts Medicare4.0 mi

Mysore Nagaraja, M.D.

Gastroenterology

NPI 1760451298

811 E 11TH ST STE 208
Upland, CA 91786

(909) 982-2279

✔ PECOS✔ Accepts Medicare4.0 mi

Peter Niciforos, M.D.

Family Practice

NPI 1356359277

330 N D ST STE 300
San Bernardino, CA 92401

(909) 888-6602

✔ PECOS4.4 mi

Padmini Tummala, MD

Cardiovascular Disease (Cardiology)

NPI 1669519500

914 W FOOTHILL BLVD STE A
Upland, CA 91786

(909) 285-6717

✔ PECOS✔ Accepts Medicare5.4 mi

Pratibha Kayastha

Nurse Practitioner

NPI 1942601281

585 N MOUNTAIN AVE SUITE A
Upland, CA 91786

(909) 946-2228

✔ PECOS5.8 mi

Hla Myint Maung Shin Jian Hwang, M.D.

Nephrology

NPI 1356357560

1131 W 6TH ST STE 150
Ontario, CA 91762

(909) 482-4462

✔ PECOS✔ Accepts Medicare6.0 mi

Heather Davis Kingston, MD

Pulmonary Disease

NPI 1154390391

1601 MONTE VISTA AVE STE 270
Claremont, CA 91711

(909) 865-9152

✔ PECOS✔ Accepts Medicare7.5 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 1346639952. It was assigned to this organization in the NPPES registry on January 20, 2015.

Where is Chaparral Medical Group, Inc. located?

Chaparral Medical Group, Inc. is located at 8330 Red Oak St Ste 101, Rancho Cucamonga, CA 91730. The listed phone number is (909) 987-4922.

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

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

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, 8 practice at this address and 32 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 February 24, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 months 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.