William R. Trahan, D.M.D, M.S.D
NPI 1881949923ActiveIndividual· Dentist, Prosthodontics· St Charles, IL
Opted out of Medicare from May 2016 to May 2028. Dentist, Prosthodontics (D.M.D, M.S.D) in St Charles, Illinois, licensed in IL, with an NPI issued in July 2012. Part D covered 476 prescriptions written in 2024, 99% of them generic. Straumann USA LLC was the largest of 2 companies reporting payments in 2025, $505.14 in all, mostly food and beverage.
Overview
| NPI | 1881949923 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.M.D, M.S.D |
| Sole proprietor | No |
| NPI issued | Jul 16, 2012 |
| Last updated in NPPES | Jan 23, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dentist, Prosthodontics Primary | 1223P0700X | 021.002698 | IL |
| Dentist | 122300000X | 019.030154 | 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 |
|---|---|
| Opt-out | Opted out May 31, 2016 – May 31, 2028 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 476 · 476 30-day fills |
|---|---|
| Patients | 224 |
| Total drug cost | $2,029 |
| Generic share | 99% of claims |
Industry payments (Open Payments)
- 2025$505.14 · 9 payments from 2 companies
- 2024$964.96 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Straumann USA LLC | $472.94 | 8 |
| Dentsply Sirona Inc | $32.20 | 1 |
What the 2025 payments were for
- Food and Beverage$505.14 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records