Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Radiation Therapy of Winchester, LLC

Q: What is the NPI number for Radiation Therapy of Winchester, LLC?

The NPI for Radiation Therapy of Winchester, LLC is 1578614459, a Type 2 (organization) record in the CMS NPPES registry.

Radiation Oncology Clinic/Center in Winchester, MA · enumerated 2007 · authorized official Arthur Byrd, Cfo.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1578614459

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Registry record

Entity type Organization (Type 2)

Legal business name Radiation Therapy of Winchester, LLC

Practice address 620 Washington St, Winchester, MA, 01890

Phone (508) 897-1501

Enumeration date Jan 16, 2007

Last updated in NPPES Sep 27, 2021

Taxonomy & classification

261QX0203X Radiation Oncology Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Arthur Byrd

Title Cfo

Phone (508) 897-1501

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Who is the authorized official for Radiation Therapy of Winchester, LLC?

NPPES lists Arthur Byrd (Cfo) as the authorized official for this organization.

What is the NPI number for Radiation Therapy of Winchester, LLC?

The NPI for Radiation Therapy of Winchester, LLC is 1578614459, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-09-27.