Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Southern Cook Radiation Oncology Ltd

Radiation Oncology Physician in Blue Island, IL · enumerated 2005 · authorized official Gregorio Tolentino, Officer.

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

National Provider Identifier

1487635314

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Registry record

Entity type Organization (Type 2)

Legal business name Southern Cook Radiation Oncology Ltd

Practice address 2310 York St, Suite M, Blue Island, IL, 60406

Phone (708) 396-0910

Fax (708) 388-4354

Enumeration date Nov 8, 2005

Last updated in NPPES Jul 23, 2010

Taxonomy & classification

2085R0001X Radiation Oncology Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Gregorio Tolentino

Title Officer

Phone (708) 396-0910

Other identifiers

Identifier	Type	State	Issuer
CL9637	Other	-	RR MEDICARE GR
1617459	Other	IL	BCBS IL GR #

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

Where is Southern Cook Radiation Oncology Ltd located?

The practice location on file with NPPES is in Blue Island, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2010-07-23. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-23.