Dr. James Ostrenga, M.D.
28% Complete
Profile completeness
ZIP Healthcare Access Score
Moderate Access
ZIP 60540 • C
20+
Years in Practice
Healthcare Access Where Dr. James Ostrenga Practices
ZIP code 60540 • Naperville, Illinois
Some healthcare services require significant travel or wait times in ZIP 60540.
View full Healthcare Access Score report for ZIP 60540Conditions Dr. James Ostrenga Can Help With
Based on specialty, these are the relevant healthcare access scores for the practice area
Practice Locations
4 locations
Dupage Medical Group Ltd
100 Spalding Dr, Naperville, Illinois, 60540
(630) 355-8000
Dupage Medical Group Ltd
100 Spalding Dr, Naperville, Illinois, 60540
(630) 717-2600
Basko Dermatology, Llc
1331 W 75th St, Naperville, Illinois, 60540
(630) 596-8045
Edward Health Ventures
100 Spalding Dr, Naperville, Illinois, 60540
(630) 961-9485
About Dr. James Ostrenga
James Ostrenga, M.D. is a healthcare provider practicing in Naperville, IL.
Specialty 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.
4
Locations
1
States Licensed
Credentials & Board Certifications
Credentials verified via NPI Registry (NPPES)
Education & Training
No education details on file.
Licenses & Practice States
Licensed in 1 state
| State | License | Classification | Primary |
|---|---|---|---|
| Illinois | 036-057460 | Internal Medicine |
Public Data Summary for Dr. James Ostrenga
With 20 years of practice, Dr. James Ostrenga is an established healthcare provider, M.D.,. Dr. currently practices across 4 facilities, including Dupage Medical Group Ltd in Naperville, Illinois. Their National Provider Identifier (NPI) is 1801983648, and the profile below combines data from CMS NPPES, Medicare billing records, the HHS OIG exclusion list, and — where available — CMS Open Payments, Medicare Utilization, and Part D prescriber summaries.
Dr. James Ostrenga's practice is located in ZIP 60540 (Naperville, Illinois), which has an overall CartoChrome Healthcare Access Score of 53/100 (Moderate Access). Access to care in this area is moderate — most services are reachable but with meaningful variability by specialty.
Transparency & Safety
Public records from CMS and OIG databases
Opioid Prescribing
This provider has no opioid prescriptions on file in Medicare Part D data.
Insurance & Accessibility
Reviews
Community reviews for Dr. James Ostrenga
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FAQ
Frequently asked questions about Dr. James Ostrenga
Where does Dr. James Ostrenga practice?
Dr. James Ostrenga practices at Dupage Medical Group Ltd in Naperville, Illinois. Dr. is also affiliated with 3 additional facilities, listed below.
Does Dr. James Ostrenga accept Medicare?
Based on CMS records, Dr. James Ostrenga has not filed a Medicare opt-out affidavit, which means they typically accept Medicare-covered patients. Call the practice directly to confirm Medicare acceptance for your specific plan.
What is Dr. James Ostrenga's NPI number?
Dr. James Ostrenga's National Provider Identifier (NPI) is 1801983648. This is the unique 10-digit number the Centers for Medicare & Medicaid Services assigns to every practicing US healthcare provider. You can verify this number directly at the NPPES NPI Registry.
How long has Dr. James Ostrenga been practicing?
Dr. James Ostrenga has approximately 20 years of practice experience.