ARROWHEAD RADIOLOGY MEDICAL GROUP INC
NPI 1023113172
Radiology - Diagnostic Radiology in Colton, CA

Q: What is Arrowhead Radiology Medical Group Inc's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Active since September 13, 2006

400 N PEPPER AVE, COLTON, CA 92324(909) 580-1520(909) 580-1561 Get Directions Write a Review

NPPES record last updated: September 30, 2008. Verified against the NPPES registry weekly; last sync: October 25, 2026.

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About Arrowhead Radiology Medical Group Inc NPPES

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

ARROWHEAD RADIOLOGY MEDICAL GROUP INC (NPI 1023113172) is a healthcare organization registered as a diagnostic radiology in Colton, California and active in the NPI registry since September 2006. The organization lists Fredrick L Orr, President, as its authorized official.

NPPES Registry Identity

NPI1023113172

Entity TypeOrganization

Primary Taxonomy2085R0202X

Legal Business NameARROWHEAD RADIOLOGY MEDICAL GROUP INC

Location Address400 N PEPPER AVEColton, CA 92324-1801

Mailing AddressPo Box 26060Fresno, CA 93729-6060 · (559) 455-4000 · Fax (559) 455-4004

Phone(909) 580-1520

Fax(909) 580-1561

Organization SubpartNo

Authorized OfficialFredrick L OrrPresident · (909) 580-1580

Enumeration DateSeptember 13, 2006

Last NPPES UpdateSeptember 30, 2008

✔ NPI 1023113172 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Also ListedRadiology · Nuclear RadiologyTaxonomy 2085N0904X

Also ListedRadiology · Vascular & Interventional RadiologyTaxonomy 2085R0204X

Also ListedRadiology · Diagnostic UltrasoundTaxonomy 2085U0001X

400 N PEPPER AVE, Colton, CA 92324

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Other Identifiers 3

Medicare PINZZZ91517ZCA

MedicaidGR0012310CA

Medicare PINCS7946CA

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X MULTIPLE SINGLE 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)

Arrowhead Radiology 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 13 clinicians reassign Medicare billing to Arrowhead Radiology Medical Group Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 8 within 10 miles. They are listed nearest first.

Clinicians, nearest first (13)

Michael Gentry, MD

Diagnostic Radiology

NPI 1013196575

400 N PEPPER AVE
Colton, CA 92324

(909) 580-1520

✔ PECOS✔ Accepts MedicareSame address

Chul Chae, M.D.

Diagnostic Radiology

NPI 1225133465

400 N PEPPER AVE
Colton, CA 92324

(909) 580-1520

✔ PECOS✔ Accepts Medicare0.3 mi

Thuan Dang, M.D.

Diagnostic Radiology

NPI 1336244508

400 N PEPPER AVE
Colton, CA 92324

(909) 580-1520

✔ PECOS0.3 mi

Tung Huynh, M.D.

Diagnostic Radiology

NPI 1356446470

400 N PEPPER AVE
Colton, CA 92324

(909) 580-1520

✔ PECOS✔ Accepts Medicare0.3 mi

James Kim, M.D.

Diagnostic Radiology

NPI 1427370444

400 N PEPPER AVE
Colton, CA 92324

(909) 580-1520

✔ PECOS✔ Accepts Medicare0.3 mi

Ha Le, M.D.

Diagnostic Radiology

NPI 1487751897

400 N PEPPER AVE
Colton, CA 92324

(909) 580-1520

✔ PECOS✔ Accepts Medicare0.3 mi

Chandler Shyu, MD

Diagnostic Radiology

NPI 1265447106

400 N PEPPER AVE DEPT OF RADIOLOGY
Colton, CA 92324

(909) 580-1520

✔ PECOS✔ Accepts Medicare0.3 mi

John Sohn, M.D.

Diagnostic Radiology

NPI 1376648410

400 N PEPPER AVE
Colton, CA 92324

(909) 580-1520

✔ PECOS✔ Accepts Medicare0.3 mi

David Underwood, M.D

Diagnostic Radiology

NPI 1023080686

414 E SAN BERNARDINO RD
Covina, CA 91723

(626) 915-5181

✔ PECOS✔ Accepts Medicare30 mi

Peter Malek, M.D.

Diagnostic Radiology

NPI 1114174091

1200 N STATE ST ROOM #3545
Los Angeles, CA 90033

(323) 226-7257

✔ PECOS✔ Accepts Medicare49 mi

Andrew Fleck, M.D.

Diagnostic Radiology

NPI 1942696125

3600 MINNESOTA DR STE 800
Edina, MN 55435

(952) 595-1100

✔ PECOS✔ Accepts Medicare1,476 mi

Rishabh Gattu, MD

Diagnostic Radiology

NPI 1376036707

1500 E MEDICAL CENTER DR
Ann Arbor, MI 48109

(734) 936-4000

✔ PECOS✔ Accepts Medicare1,902 mi

Sara Shams, MD, PHD

Diagnostic Radiology

NPI 1457881401

475 SEAVIEW AVENUE
Staten Island, NY 10305

(718) 226-8630

✔ PECOS✔ Accepts Medicare2,400 mi

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 Arrowhead Radiology Medical Group Inc's NPI number?

The NPI number for Arrowhead Radiology Medical Group Inc is 1023113172. It was assigned to this organization in the NPPES registry on September 13, 2006.

Where is Arrowhead Radiology Medical Group Inc located?

Arrowhead Radiology Medical Group Inc is located at 400 N Pepper Ave, Colton, CA 92324. The listed phone number is (909) 580-1520.

What is Arrowhead Radiology Medical Group Inc's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Is Arrowhead Radiology Medical Group Inc enrolled in Medicare?

Yes. Arrowhead Radiology Medical Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Arrowhead Radiology Medical Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 13 clinicians, all in Diagnostic Radiology, reassign their Medicare billing to Arrowhead Radiology 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. Of these, 1 practice at this address and 8 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 Arrowhead Radiology Medical Group Inc was last updated on September 30, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.