Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Newburyport, Ma Radiation Center LLC

Q: What is the NPI number for Newburyport, Ma Radiation Center LLC?

The NPI for Newburyport, Ma Radiation Center LLC is 1861083438, a Type 2 (organization) record in the CMS NPPES registry.

Radiation Oncology Clinic/Center in Newburyport, MA · enumerated 2021 · authorized official William Larkin, Cfo.

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

National Provider Identifier

1861083438

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Registry record

Entity type Organization (Type 2)

Legal business name Newburyport, Ma Radiation Center LLC

Practice address 1 Wallace Bashaw Way Ste 1001, Newburyport, MA, 01950

Phone (978) 997-1351

Enumeration date Jan 27, 2021

Last updated in NPPES Jan 27, 2021

Taxonomy & classification

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

Authorized official

Name William Larkin

Title Cfo

Phone (800) 544-3215

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

What is the NPI number for Newburyport, Ma Radiation Center LLC?

The NPI for Newburyport, Ma Radiation Center LLC is 1861083438, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Newburyport, Ma Radiation Center LLC?

NPPES lists William Larkin (Cfo) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-27.