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CHAPARRAL MEDICAL GROUP, INC.
NPI 1609292051
Internal Medicine - Pulmonary Disease in Pomona, CA

Active since March 10, 2014
1940 N ORANGE GROVE AVE STE A&B, POMONA, CA 91767(909) 865-6900(909) 865-6300 Get Directions Write a Review

NPPES record last updated: September 25, 2023. Verified against the NPPES registry weekly; last sync: October 18, 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 1609292051) is a healthcare organization registered as a pulmonary disease in Pomona, California and active in the NPI registry since March 2014. The organization lists Prasad Jeereddi, Ceo, as its authorized official.

NPPES Registry Identity

NPI1609292051
Entity TypeOrganization
Primary Taxonomy207RP1001X
Legal Business NameCHAPARRAL MEDICAL GROUP, INC.
Location Address1940 N ORANGE GROVE AVE STE A&BPomona, CA 91767-3002
Mailing Address840 Towne Center DrPomona, CA 91767-5900 · (909) 398-1550 · Fax (909) 398-1573
Phone(909) 865-6900
Fax(909) 865-6300
Organization SubpartNo
Authorized OfficialPrasad JeereddiCeo · (909) 469-1823
Enumeration DateMarch 10, 2014
Last NPPES UpdateSeptember 25, 2023
NPPES CertifiedSeptember 25, 2023
✔ NPI 1609292051 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyInternal Medicine · Pulmonary DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RP1001X
Definition
An internist who treats diseases of the lungs and airways. The pulmonologist diagnoses and treats cancer, pneumonia, pleurisy, asthma, occupational and environmental diseases, bronchitis, sleep disorders, emphysema and other complex disorders of the lungs.
Also ListedInternal Medicine · Critical Care MedicineTaxonomy 207RC0200X
Also ListedInternal Medicine · Sleep MedicineTaxonomy 207RS0012X
Also ListedThoracic Surgery (Cardiothoracic Vascular Surgery)Taxonomy 208G00000X · License A76312 (CA)
1940 N ORANGE GROVE AVE STE A&B, Pomona, CA 91767
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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

114

Medicare enrollment records show 114 clinicians reassign Medicare billing to Chaparral Medical Group, Inc., which bills Medicare for the services they deliver. Of these, 13 practice at this address and 80 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 28

Internal Medicine29
Cardiovascular Disease (Cardiology)11
Nurse Practitioner9
Family Practice7
Pulmonary Disease7
Endocrinology5
Gastroenterology5
Dermatology4
20 other specialties37

Nearest to this location (20)

See all 114
Nadir Eltahir, MD
Pulmonary Disease
NPI 1053389338
1940 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 865-6900
✔ PECOS✔ Accepts MedicareSame address
Anthony Gan
Internal Medicine
NPI 1902223092
1940 N ORANGE GROVE AVE STE A
Pomona, CA 91767
(909) 865-6900
✔ PECOS✔ Accepts MedicareSame address
Guangqiang Gao, M.D
Cardiac Surgery
NPI 1124322086
1940 N ORANGE GROVE AVE STE B
Pomona, CA 91767
(909) 865-9099
✔ PECOS✔ Accepts MedicareSame address
Joseph Gordon, M.D.
Internal Medicine
NPI 1811243652
1940 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 865-6900
✔ PECOS✔ Accepts MedicareSame address
Dallis Ngo, D.O., M.S.
Pulmonary Disease
NPI 1174055149
1940 N ORANGE GROVE AVE STE A
Pomona, CA 91767
(909) 865-6900
✔ PECOS✔ Accepts MedicareSame address
Derrick Raptis, M.D.
Pulmonary Disease
NPI 1679749683
1940 N ORANGE GROVE AVE STE A
Pomona, CA 91767
(909) 865-6900
✔ PECOS✔ Accepts MedicareSame address
Nathaniel Soriano, M.D.
Internal Medicine
NPI 1679890271
1940 N. ORANGE GROVE AVE SUITE A
Pomona, CA 91767
(909) 865-6900
✔ PECOS✔ Accepts MedicareSame address
Gurbinder Sadana, M.D.
Pulmonary Disease
NPI 1205898327
1940 N. ORANGE GROVE SUITE A
Pomona, CA 91767
(909) 865-6900
✔ PECOS✔ Accepts MedicareSame address
Rakesh Sinha, M.B.B.S., M.D.
Pulmonary Disease
NPI 1306006358
1940 N ORANGE GROVE AVE STE A
Pomona, CA 91767
(909) 865-6900
✔ PECOS✔ Accepts MedicareSame address
Prasad Jeereddi, MD
Endocrinology
NPI 1821058470
1904 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 469-1823
✔ PECOS✔ Accepts MedicareSame address
Rita Pradhan, MD
Endocrinology
NPI 1336117738
1904 N ORANGE GROVE AVE CHAPARRAL MEDICAL GROUP
Pomona, CA 91767
(909) 469-1823
✔ PECOS✔ Accepts MedicareSame address
Jaffar Tremazi, MD
Rheumatology
NPI 1649248782
1904 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 469-1823
✔ PECOS✔ Accepts MedicareSame address
Daryoosh Valamanesh, M.D.
Internal Medicine
NPI 1205804671
1904 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 469-1823
✔ PECOS✔ Accepts MedicareSame address
Sumi Felix, MD
Internal Medicine
NPI 1053576801
1880 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 620-7200
✔ PECOS0.1 mi
Nancy Ramirez, NP-C
Nurse Practitioner
NPI 1992185847
1880 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 620-7200
✔ PECOS0.1 mi
Praveena Jeereddi, MD
Geriatric Medicine
NPI 1346218740
1880 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 620-7200
✔ PECOS✔ Accepts Medicare0.1 mi
Ewa Konca, MD
Endocrinology
NPI 1134197528
1880 N ORANGE GROVE AVE
Pomona, CA 91767
(909) 620-7200
✔ PECOS✔ Accepts Medicare0.1 mi
Ramanna Merla, MD
Cardiovascular Disease (Cardiology)
NPI 1336343912
1866 N ORANGE GROVE AVE STE 201
Pomona, CA 91767
(909) 623-5866
✔ PECOS✔ Accepts Medicare0.1 mi
Lisa Raptis, M.D.
Hospice/Palliative Care
NPI 1902073802
1866 N ORANGE GROVE AVE STE 202
Pomona, CA 91767
(909) 623-8796
✔ PECOS✔ Accepts Medicare0.1 mi
Sundararajan Srikanth, M.D.
Interventional Cardiology
NPI 1104934082
1866 N. ORANGE GROVE AVE SUITE 202
Pomona, CA 91767
(909) 623-8796
✔ PECOS✔ Accepts Medicare0.1 mi
See all 114 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 1609292051. It was assigned to this organization in the NPPES registry on March 10, 2014.

Where is Chaparral Medical Group, Inc. located?

Chaparral Medical Group, Inc. is located at 1940 N Orange Grove Ave Ste A&b, Pomona, CA 91767. The listed phone number is (909) 865-6900.

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

The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.

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), 114 clinicians in 28 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 (29), Cardiovascular Disease (Cardiology) (11) and Nurse Practitioner (9). Of these, 13 practice at this address and 80 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 September 25, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.