RAYUS RADIOLOGY
NPI 1821435553
Radiology - Diagnostic Radiology in Springfield, MA
About Rayus Radiology NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RAYUS RADIOLOGY (NPI 1821435553) is a healthcare organization registered as a diagnostic radiology in Springfield, Massachusetts and active in the NPI registry since June 2013. The organization lists Ramona Ahern, (ao), as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Rayus Radiology is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
99Medicare enrollment records show 99 clinicians reassign Medicare billing to Rayus Radiology, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 4 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 2
Nearest to this location (20)
See all 99Holyoke, MA 01040
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 Chelmsford Mri, P.C.'s NPI number?
The NPI number for Chelmsford Mri, P.C. is 1821435553. It was assigned to this organization in the NPPES registry on June 4, 2013. The provider is doing business as Rayus Radiology.
Where is Chelmsford Mri, P.C. located?
Chelmsford Mri, P.C. is located at 3640 Main St Suite 101, Springfield, MA 01107. The listed phone number is (413) 781-9000.
What is Chelmsford Mri, P.C.'s specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Chelmsford Mri, P.C. enrolled in Medicare?
Yes. Chelmsford Mri, P.C. is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Chelmsford Mri, P.C.?
According to the CMS Revalidation Reassignment List (October 2026 release), 99 clinicians in 2 Medicare specialties reassign their Medicare billing to Chelmsford Mri, P.C.. 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 (98) and Interventional Radiology (1). Of these, 1 practice at this address and 4 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Chelmsford Mri, P.C. accept?
Health plans from Anthem Blue Cross and Blue Shield list Chelmsford Mri, P.C. as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Chelmsford Mri, P.C. was last updated on October 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Rayus Radiology · NPI 1821435553
Diagnostic Radiology organization in Springfield, Massachusetts. Organization record, active in the CMS NPPES registry since June 4, 2013.
## Identity
- **NPI:** 1821435553 (Entity type: Organization)
- **Enumerated:** June 4, 2013
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **Legal business name:** Chelmsford Mri, P.c.
- **Organization subpart:** No
- **Authorized official:** Ramona Ahern, (AO)
## Practice location
- **Address:** 3640 MAIN ST, SUITE 101, Springfield, MA 01107-1145
- **Phone:** (413) 781-9000 · **Fax:** (413) 781-7988
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 99 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Diagnostic Radiology (98), Interventional Radiology (1); 1 practice at this address and 4 within 10 miles; [full list](https://npiprofile.com/npi/1821435553/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 8, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1821435553) · Data from the CMS NPPES public registry.