RADIATION THERAPY OF SOUTHEASTERN MASS, LLC
NPI 1104978519
Clinic/Center - Oncology, Radiation in Mansfield, MA
About Radiation Therapy Of Southeastern Mass, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RADIATION THERAPY OF SOUTHEASTERN MASS, LLC (NPI 1104978519), doing business as Brigham And Women's / Sturdy Memorial Radiation Oncology Center, is a healthcare organization registered as an oncology, radiation in Mansfield, Massachusetts and active in the NPI registry since January 2007. The organization lists Tiffany Zewe, Vp, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 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)
Radiation Therapy Of Southeastern Mass, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
14Medicare enrollment records show 14 clinicians reassign Medicare billing to Radiation Therapy Of Southeastern Mass, LLC, which bills Medicare for the services they deliver. They are listed nearest first.
Clinicians, nearest first (14)
Milford, MA 01757
Boston, MA 02115
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 Radiation Therapy Of Southeastern Mass, LLC's NPI number?
The NPI number for Radiation Therapy Of Southeastern Mass, LLC is 1104978519. It was assigned to this organization in the NPPES registry on January 17, 2007. The provider is doing business as Brigham and Women's / Sturdy Memorial Radiation Oncology Center.
Where is Radiation Therapy Of Southeastern Mass, LLC located?
Radiation Therapy Of Southeastern Mass, LLC is located at 89 Forbes Blvd, Mansfield, MA 02048. The listed phone number is (857) 307-3700.
What is Radiation Therapy Of Southeastern Mass, LLC's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Oncology, Radiation, with taxonomy code 261QX0203X.
Is Radiation Therapy Of Southeastern Mass, LLC enrolled in Medicare?
Yes. Radiation Therapy Of Southeastern Mass, LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Radiation Therapy Of Southeastern Mass, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 14 clinicians, all in Radiation Oncology, reassign their Medicare billing to Radiation Therapy Of Southeastern Mass, LLC. 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. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Radiation Therapy Of Southeastern Mass, LLC accept?
Health plans from Anthem Blue Cross and Blue Shield and Harvard Pilgrim Health Care list Radiation Therapy Of Southeastern Mass, LLC 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 Radiation Therapy Of Southeastern Mass, LLC was last updated on May 6, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months 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.
# Radiation Therapy Of Southeastern Mass, Llc · NPI 1104978519
Oncology, Radiation organization in Mansfield, Massachusetts. Organization record, active in the CMS NPPES registry since January 17, 2007.
## Identity
- **NPI:** 1104978519 (Entity type: Organization)
- **Enumerated:** January 17, 2007
- **Primary specialty:** Clinic/Center - Oncology, Radiation · taxonomy 261QX0203X
- **Also known as:** Brigham and Women's / Sturdy Memorial Radiation Oncology Center (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Tiffany Zewe, VP
## Practice location
- **Address:** 89 FORBES BLVD, Mansfield, MA 02048-1125
- **Phone:** (857) 307-3700 · **Fax:** (857) 307-3710
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 14 clinicians (Radiation Oncology) reassign Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 6, 2026
- **Other identifiers:** Medicaid 110077799B (MA)
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Source: [NPI Profile](https://npiprofile.com/npi/1104978519) · Data from the CMS NPPES public registry.