Thomas M. Kazmierczak Jr., DO
NPI 1225033871ActiveIndividual· Obstetrics & Gynecology· Morris, IL
Obstetrics & Gynecology (DO) with Dupage Medical Group Ltd, practicing in Morris, Illinois. Their prescriptions cost Medicare Part D more than their services did: $5,651 for 114 claims, against $2,182 paid for services in 2024. Lists Silver Cross Hospital and Medical Centers as a hospital affiliation.
Overview
| NPI | 1225033871 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jun 20, 2005 |
| Last updated in NPPES | Aug 9, 2023 |
| Certified by provider | Aug 9, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Obstetrics & Gynecology Primary | 207V00000X | 036107879 | 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 - Obstetrics/Gynecology (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 30 |
|---|---|
| Services billed | 53 across 14 procedure codes |
| Paid by Medicare | $2,182 |
Part D prescriptions in 2024
| Prescriptions (claims) | 114 · 277 30-day fills |
|---|---|
| Patients | 33 |
| Total drug cost | $5,651 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 2000 |
|---|---|
| Medicare specialty | Obstetrics/Gynecology |
Medical group
- Dupage Medical Group LtdWinfield, IL · 1,322 clinicians
Hospital affiliation
- Silver Cross Hospital and Medical CentersNew Lenox, IL
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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