Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Pioneer Valley Radiation Oncology, PC

Specialist in Springfield, MA · enumerated 2006 · authorized official Brian Acker, Authorized Official.

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

National Provider Identifier

1619900172

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Registry record

Entity type Organization (Type 2)

Legal business name Pioneer Valley Radiation Oncology, PC

Practice address 3350 Main St, Springfield, MA, 01107

Phone (413) 794-9175

Fax (413) 794-5153

Enumeration date Jul 8, 2006

Last updated in NPPES Sep 16, 2015

Taxonomy & classification

174400000X Specialist Other Service Providers · License 74050 (MA) Primary

Authorized official

Name Brian Acker

Title Authorized Official

Phone (413) 794-9338

Other identifiers

Identifier	Type	State	Issuer
9783679	Medicaid	MA	-
M16963	Other	MA	BLUE CROSS BLUE SHIELD
M20534	Other	MA	MEDICARE PTAN

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Pioneer Valley Radiation Oncology, PC?

Pioneer Valley Radiation Oncology, PC is registered in NPPES as a Specialist (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-09-16.