Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

James P. Ostrenga, MD

Individual provider Cardiovascular Disease Physician · NPI 1801983648

James P. Ostrenga, MD is a Cardiovascular Disease Physician in Naperville, Illinois. Licensed in Illinois. Registered with an NPI since 2006.

Licensed in
IL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

100 Spalding Dr Ste 212
Naperville, IL 60540
Phone: (630) 357-4111
Fax: (630) 357-4644
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 036-057460 (IL)

Record details

NPI number1801983648
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedOctober 5, 2006
Last updated in NPPESMarch 21, 2014

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