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REGIONAL RADIOLOGICAL ASSOCIATES, INC. A MEDICAL GROUP
NPI 1649202888
Radiology - Diagnostic Radiology in Redding, CA

Active since July 07, 2006
2020 COURT ST, REDDING, CA 96001(530) 243-1236(530) 243-8502 Get Directions Write a Review

NPPES record last updated: December 1, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Regional Radiological Associates, Inc. A Medical Group NPPES

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

REGIONAL RADIOLOGICAL ASSOCIATES, INC. A MEDICAL GROUP (NPI 1649202888) is a healthcare organization registered as a diagnostic radiology in Redding, California and active in the NPI registry since July 2006. The organization lists Richard Slepicka, Cfo/cpa, as its authorized official.

NPPES Registry Identity

NPI1649202888
Entity TypeOrganization
Primary Taxonomy2085R0202X
Legal Business NameREGIONAL RADIOLOGICAL ASSOCIATES, INC. A MEDICAL GROUP
Location Address2020 COURT STRedding, CA 96001-1822
Mailing AddressPo Box 849980Los Angeles, CA 90084-9980 · (530) 243-1236 · Fax (530) 243-8502
Phone(530) 243-1236
Fax(530) 243-8502
Organization SubpartNo
Authorized OfficialRichard SlepickaCfo/cpa · (530) 243-1236
Enumeration DateJuly 7, 2006
Last NPPES UpdateDecember 1, 2023
NPPES CertifiedDecember 1, 2023
✔ NPI 1649202888 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ 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 ListedClinic/Center · RadiologyTaxonomy 261QR0200X
2020 COURT ST, Redding, CA 96001
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Regional Radiological Associates, Inc. A Medical Group is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

10

Medicare enrollment records show 10 clinicians reassign Medicare billing to Regional Radiological Associates, Inc. A Medical Group, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians by Medicare Specialty 2

Diagnostic Radiology9
Interventional Radiology1

Clinicians, nearest first (10)

Darryl Demaris, M.D.
Diagnostic Radiology
NPI 1689069296
2020 COURT ST
Redding, CA 96001
(530) 243-1249
✔ PECOS✔ Accepts MedicareSame address
Patricia Hadley, M.D.
Diagnostic Radiology
NPI 1750393633
2020 COURT ST
Redding, CA 96001
(530) 243-1236
✔ PECOS✔ Accepts MedicareSame address
Jonathan Jewkes, M.D.
Diagnostic Radiology
NPI 1710148937
2020 COURT ST
Redding, CA 96001
(530) 243-1236
✔ PECOS✔ Accepts MedicareSame address
Dilan Samarawickrama, M.D.
Diagnostic Radiology
NPI 1811214257
2020 COURT ST
Redding, CA 96001
(530) 243-1236
✔ PECOS✔ Accepts MedicareSame address
Irwin Maier, M.D.
Diagnostic Radiology
NPI 1275538431
21320 PENNELEME RD
Red Bluff, CA 96080
(952) 595-1100
✔ PECOS✔ Accepts Medicare24 mi
Thomas Bey, M.D.
Interventional Radiology
NPI 1568488971
1500 DUARTE RD
Duarte, CA 91010
(800) 826-4673
✔ PECOS✔ Accepts Medicare507 mi
Michael Bayona, M.D.
Diagnostic Radiology
NPI 1811330954
525 S COWLEY ST
Spokane, WA 99202
(479) 879-4375
✔ PECOS✔ Accepts Medicare547 mi
David Gedeon, MD
Diagnostic Radiology
NPI 1609262047
27700 MEDICAL CENTER RD
Mission Viejo, CA 92691
(949) 364-1400
✔ PECOS✔ Accepts Medicare550 mi
John Loh, MD
Diagnostic Radiology
NPI 1891895348
7026 OLD KATY RD STE 276
Houston, TX 77024
(713) 621-7436
✔ PECOS✔ Accepts Medicare1,688 mi
Ashlesha Sharma, DO
Diagnostic Radiology
NPI 1902068083
315 S MANNING BLVD
Albany, NY 12208
(518) 525-1401
✔ PECOS✔ Accepts Medicare2,486 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 Regional Radiological Associates, Inc. A Medical Group's NPI number?

The NPI number for Regional Radiological Associates, Inc. A Medical Group is 1649202888. It was assigned to this organization in the NPPES registry on July 7, 2006.

Where is Regional Radiological Associates, Inc. A Medical Group located?

Regional Radiological Associates, Inc. A Medical Group is located at 2020 Court St, Redding, CA 96001. The listed phone number is (530) 243-1236.

What is Regional Radiological Associates, Inc. A Medical Group's specialty?

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

Is Regional Radiological Associates, Inc. A Medical Group enrolled in Medicare?

Yes. Regional Radiological Associates, Inc. A Medical Group is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Regional Radiological Associates, Inc. A Medical Group?

According to the CMS Revalidation Reassignment List (October 2026 release), 10 clinicians in 2 Medicare specialties reassign their Medicare billing to Regional Radiological Associates, Inc. A Medical Group. 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 (9) and Interventional Radiology (1). Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Regional Radiological Associates, Inc. A Medical Group was last updated on December 1, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.