William Prosniewski, DMD
NPI 1205405685ActiveIndividual· Dentist, General Practice· Bartlett, IL
Dentist, General Practice (DMD) in Bartlett, Illinois, licensed in IL, with an NPI issued in June 2021. Part D covered 21 prescriptions written in 2024, 71% of them generic. Align Technology, Inc. was the largest of 2 companies reporting payments in 2025, $143.71 in all, mostly consulting fees.
Overview
| NPI | 1205405685 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DMD |
| Sole proprietor | Yes |
| NPI issued | Jun 21, 2021 |
| Last updated in NPPES | Jun 21, 2021 |
| Certified by provider | Jun 21, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, General Practice Primary | 1223G0001X | 019033158 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 21 · 21 30-day fills |
|---|---|
| Patients | 15 |
| Total drug cost | $86.90 |
| Generic share | 71% of claims |
Industry payments (Open Payments)
- 2025$143.71 · 2 payments from 2 companies
- 2024$13.22 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Align Technology, Inc. | $125.00 | 1 |
| Straumann USA LLC | $18.71 | 1 |
What the 2025 payments were for
- Consulting Fee$125.00 · 1 payment
- Food and Beverage$18.71 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other general dentists in Bartlett
- 1336315035
- 1437226669
- 1689796724
- 1700560711
- 1720072762
- 1962569285
- 1003806555
- 1194572974
- 1295412948
- 1316145501
- 1316271380
- 1356786743
All 27 general dentists in Bartlett · All general dentists in Illinois