Harold Mozwecz, MD
NPI 1356318349ActiveIndividual· Internal Medicine, Gastroenterology· Naperville, IL
Internal Medicine, Gastroenterology (MD) in Naperville, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $322,211 for 1,143 claims, against $84,912 paid for services in 2024. Medtronic, Inc. reported $111.92 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1356318349 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 8, 2006 |
| Last updated in NPPES | Jan 19, 2021 |
| Certified by provider | Jan 19, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 036075083 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 413 |
|---|---|
| Services billed | 731 across 41 procedure codes |
| Paid by Medicare | $84,912 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,143 · 2,199 30-day fills |
|---|---|
| Patients | 539 |
| Total drug cost | $322,211 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Gastroenterology |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Hospital affiliations
Industry payments (Open Payments)
- 2025$111.92 · 1 payment from 1 company
- 2024$34.28 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $111.92 | 1 |
What the 2025 payments were for
- Food and Beverage$111.92 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other gastroenterologists in Naperville
- 1194791194
- 1265878813
- 1316913809
- 1427276732
- 1437136454
- 1568401529
- 1588630669
- 1619357639
- 1730475534
- 1750356804
- 1760698161
- 1821010760
All 24 gastroenterologists in Naperville · All gastroenterologists in Illinois