JAMES P. OSTRENGA M.D.
NPI 1801983648
Internal Medicine - Cardiovascular Disease in Naperville, IL

Q: What is James Ostrenga's NPI number?

The NPI number for James Ostrenga is 1801983648. It was assigned to this individual provider in the NPPES registry on October 5, 2006.

Q: What is James Ostrenga's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Q: When was this NPI record last updated?

The NPPES record for James Ostrenga was last updated on March 21, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since October 05, 2006

100 SPALDING DRIVE, SUITE 212, NAPERVILLE, IL 60540(630) 357-4111(630) 357-4644 Get Directions Write a Review

NPPES record last updated: March 21, 2014. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About James P. Ostrenga M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JAMES P. OSTRENGA M.D. (NPI 1801983648) is an individual cardiovascular disease provider in Naperville, Illinois, licensed in Illinois (036-057460) and active in the NPI registry since October 2006.

NPPES Registry Identity

NPI1801983648

Entity TypeIndividualMale

Primary Taxonomy207RC0000X

Provider Legal NameJAMES P. OSTRENGACredential: M.D.

Location Address100 SPALDING DRIVE, SUITE 212Naperville, IL 60540

Mailing Address1860 Paysphere CirChicago, IL 60674-0018 · (630) 357-4111 · Fax (630) 357-4644

Phone(630) 357-4111

Fax(630) 357-4644

Sole ProprietorNo

Enumeration DateOctober 5, 2006

Last NPPES UpdateMarch 21, 2014

✔ NPI 1801983648 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians

Taxonomy Code207RC0000X

License✔ Licensed in IL · 036-057460

Definition

An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.

100 SPALDING DRIVE, Naperville, IL 60540

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Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HEMATOLOGY-ONCOLOGY CONSULTANTS, LTD.

Internal Medicine (Hematology & Oncology)

100 SPALDING DRIVE, SUITE 110
NAPERVILLE, IL 60540

Dupage County (630) 369-1501

EDWARD HEALTH VENTURES

Clinic/Center (Multi-Specialty)

100 SPALDING DRIVE, STE 204
NAPERVILLE, IL 60540

Dupage County (630) 527-5800

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is James Ostrenga's NPI number?

The NPI number for James Ostrenga is 1801983648. It was assigned to this individual provider in the NPPES registry on October 5, 2006.

Where is James Ostrenga located?

James Ostrenga practices at 100 Spalding Drive Suite 212, Naperville, IL 60540. The listed phone number is (630) 357-4111.

What is James Ostrenga's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

When was this NPI record last updated?

The NPPES record for James Ostrenga was last updated on March 21, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.