Roger S. Williams, MD
NPI 1750325692ActiveIndividual· Psychiatry & Neurology, Neurology· Billings, MT
Psychiatry & Neurology, Neurology (MD) in Billings, Montana, licensed in MT, with an NPI issued in June 2006. Sumitomo Pharma America, Inc. reported $15.78 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1750325692 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 14, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 6712 | MT |
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 |
|---|
Industry payments (Open Payments)
- 2025$15.78 · 1 payment from 1 company
- 2024$21.43 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Sumitomo Pharma America, Inc. | $15.78 | 1 |
What the 2025 payments were for
- Food and Beverage$15.78 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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