Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Cardiovascular Consultants of Naperville, Ltd.

Cardiovascular Disease Physician in Naperville, IL · enumerated 2006 · authorized official James Ostrenga, President.

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

National Provider Identifier

1972665990

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Registry record

Entity type Organization (Type 2)

Legal business name Cardiovascular Consultants of Naperville, Ltd.

Practice address 100 Spalding Dr, Suite 212, Naperville, IL, 60540

Phone (630) 357-4111

Fax (630) 357-4644

Enumeration date Dec 15, 2006

Last updated in NPPES Jan 6, 2010

Taxonomy & classification

207RC0000X Cardiovascular Disease Physician Allopathic & Osteopathic Physicians · License 042006369 (IL) Primary

Authorized official

Name James Ostrenga

Title President

Phone (630) 357-4111

Other identifiers

Identifier	Type	State	Issuer
036110817	Medicaid	IL	-
1801983648	Other	IL	NPI-JAMES P. OSTRENGA, MD
036057460	Medicaid	IL	-
1265525729	Other	IL	NPI - MARK R. OTTOLIN,MD
2215535	Other	IL	BCBSOF IL PROVIDER NUMB
036064112	Medicaid	IL	-
1588750327	Other	IL	NPI-SHARON L. CLINE, M.D.

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 Cardiovascular Consultants of Naperville, Ltd.?

The NPI for Cardiovascular Consultants of Naperville, Ltd. is 1972665990, a Type 2 (organization) record in the CMS NPPES registry.

Who is the authorized official for Cardiovascular Consultants of Naperville, Ltd.?

NPPES lists James Ostrenga (President) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-01-06.