Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Enterprise Radiation Oncology of New Jersey, LLC

Radiation Oncology Physician in Belleville, NJ · enumerated 2011 · authorized official Perry Williams, Physician.

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

National Provider Identifier

1841598638

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Registry record

Entity type Organization (Type 2)

Legal business name Enterprise Radiation Oncology of New Jersey, LLC

Practice address 1 Clara Maass Dr, Radiation Oncology Department, Belleville, NJ, 07109

Phone (973) 450-2270

Fax (973) 844-4904

Enumeration date Mar 3, 2011

Last updated in NPPES Mar 3, 2011

Taxonomy & classification

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians · License 25MA07298200 (NJ) Primary

Authorized official

Name Perry Williams

Title Physician

Phone (973) 450-2270

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

Where is Enterprise Radiation Oncology of New Jersey, LLC located?

The practice location on file with NPPES is in Belleville, NJ.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2011-03-03. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-03-03.