RIVERSIDE RADIOLOGY MEDICAL GROUP, INC.
NPI 1275766230
Radiology - Diagnostic Radiology in Corona Del Mar, CA

Active since August 25, 2009
721 IRIS AVE, CORONA DEL MAR, CA 92625(949) 719-0822(949) 719-0809 Get Directions Write a Review

NPPES record last updated: August 25, 2009. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Riverside Radiology Medical Group, Inc. NPPES

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

RIVERSIDE RADIOLOGY MEDICAL GROUP, INC. (NPI 1275766230) is a healthcare organization registered as a diagnostic radiology in Corona Del Mar, California and active in the NPI registry since August 2009. The organization lists Donald R. Massee, Secretary, as its authorized official.

NPPES Registry Identity

NPI1275766230
Entity TypeOrganization
Primary Taxonomy2085R0202X
Legal Business NameRIVERSIDE RADIOLOGY MEDICAL GROUP, INC.
Location Address721 IRIS AVECorona Del Mar, CA 92625-2228
Mailing AddressPo Box 15648Sacramento, CA 95852-0648 · (951) 781-2273 · Fax (951) 781-2293
Fax(949) 719-0809
Organization SubpartNo
Authorized OfficialDonald R. MasseeSecretary · (949) 719-0822
Enumeration DateAugust 25, 2009
✔ NPI 1275766230 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ 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.
721 IRIS AVE, Corona Del Mar, CA 92625

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 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)

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

Clinicians Billing Medicare Through This Organization

35

Medicare enrollment records show 35 clinicians reassign Medicare billing to Riverside Radiology Medical Group, Inc., which bills Medicare for the services they deliver. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 3

Diagnostic Radiology32
Interventional Radiology2
Nuclear Medicine1

Nearest to this location (20)

See all 35
Diagnostic Radiology
NPI 1134163165
1100 N TUSTIN AVE
Santa Ana, CA 92705
(714) 835-6055
✔ PECOS✔ Accepts Medicare11 mi
Diagnostic Radiology
NPI 1780144428
2801 ATLANTIC AVE
Long Beach, CA 90806
(562) 933-1550
✔ PECOS✔ Accepts Medicare23 mi
Diagnostic Radiology
NPI 1730384546
1115 S SUNSET AVE
West Covina, CA 91790
(626) 813-9988
✔ PECOS✔ Accepts Medicare32 mi
Diagnostic Radiology
NPI 1568447357
1902 ROYALTY DR SUITE 220
Pomona, CA 91767
(909) 620-8180
✔ PECOS✔ Accepts Medicare34 mi
Diagnostic Radiology
NPI 1215208673
6733 CANYON HILL DR
Riverside, CA 92506
(951) 780-1506
✔ PECOS✔ Accepts Medicare37 mi
Diagnostic Radiology
NPI 1063413920
4445 MAGNOLIA AVE
Riverside, CA 92501
(951) 755-3400
✔ PECOS✔ Accepts Medicare38 mi
Diagnostic Radiology
NPI 1215357678
4445 MAGNOLIA AVE
Riverside, CA 92501
(305) 767-3183
✔ PECOS✔ Accepts Medicare38 mi
Diagnostic Radiology
NPI 1568638807
4445 MAGNOLIA AVE
Riverside, CA 92501
(951) 788-3401
✔ PECOS✔ Accepts Medicare38 mi
Diagnostic Radiology
NPI 1053757369
4445 MAGNOLIA AVE
Riverside, CA 92501
(951) 788-1000
✔ PECOS✔ Accepts Medicare38 mi
Diagnostic Radiology
NPI 1619298965
4445 MAGNOLIA AVE
Riverside, CA 92501
(951) 788-3400
✔ PECOS✔ Accepts Medicare38 mi
Diagnostic Radiology
NPI 1457614406
4445 MAGNOLIA AVE
Riverside, CA 92501
(951) 788-3400
✔ PECOS✔ Accepts Medicare38 mi
Diagnostic Radiology
NPI 1356423339
4445 MAGNOLIA AVE
Riverside, CA 92501
(951) 788-3400
✔ PECOS✔ Accepts Medicare38 mi
Diagnostic Radiology
NPI 1912968686
1509 WILSON TERRACE
Glendale, CA 91206
(818) 409-8000
✔ PECOS✔ Accepts Medicare43 mi
Diagnostic Radiology
NPI 1033373287
1509 WILSON TER
Glendale, CA 91206
(818) 409-8000
✔ PECOS✔ Accepts Medicare43 mi
Diagnostic Radiology
NPI 1497919641
8700 BEVERLY BLVD TAPER M335
Los Angeles, CA 90048
(310) 423-3419
✔ PECOS✔ Accepts Medicare44 mi
Diagnostic Radiology
NPI 1174572572
8700 BEVERLY BLVD
West Hollywood, CA 90048
(310) 423-6500
✔ PECOS✔ Accepts Medicare44 mi
Diagnostic Radiology
NPI 1033606397
9675 BRIGHTON WAY STE 100
Beverly Hills, CA 90210
(310) 205-7310
✔ PECOS✔ Accepts Medicare45 mi
Diagnostic Radiology
NPI 1104877497
2428 SANTA MONICA BLVD
Santa Monica, CA 90404
(310) 315-1000
✔ PECOS✔ Accepts Medicare46 mi
Interventional Radiology
NPI 1659697654
11234 ANDERSON STREET GRADUATE MEDICAL EDUCATION OFFICE CP 21005
Loma Linda, CA 92354
(909) 558-0430
✔ PECOS✔ Accepts Medicare47 mi
Interventional Radiology
NPI 1316181225
225 E 2ND AVE
Escondido, CA 92025
(760) 291-6700
✔ PECOS✔ Accepts Medicare56 mi
See all 35 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 Riverside Radiology Medical Group, Inc.'s NPI number?

The NPI number for Riverside Radiology Medical Group, Inc. is 1275766230. It was assigned to this organization in the NPPES registry on August 25, 2009.

Where is Riverside Radiology Medical Group, Inc. located?

Riverside Radiology Medical Group, Inc. is located at 721 Iris Ave, Corona Del Mar, CA 92625. The listed phone number is (949) 719-0822.

What is Riverside Radiology Medical Group, Inc.'s specialty?

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

Is Riverside Radiology Medical Group, Inc. enrolled in Medicare?

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

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

According to the CMS Revalidation Reassignment List (October 2026 release), 35 clinicians in 3 Medicare specialties reassign their Medicare billing to Riverside 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. The largest specialties are Diagnostic Radiology (32), Interventional Radiology (2) and Nuclear Medicine (1). Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Riverside Radiology Medical Group, Inc. was last updated on August 25, 2009. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.