William Mason Stone, M.D.
NPI 1164528337ActiveIndividual· Psychiatry & Neurology, Neurology· Providence, RI
Psychiatry & Neurology, Neurology (M.D.) in Providence, Rhode Island, trained at Warren Alpert Medical School of Brown University (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $118,579 for 447 claims, against $2,717 paid for services in 2024. Tg Therapeutics, Inc. was the largest of 2 companies reporting payments in 2025, $131.93 in all, mostly food and beverage.
Overview
| NPI | 1164528337 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Sep 15, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Neurology Primary | 2084N0400X | 06596 | RI |
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 - Neurology (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 19 |
|---|---|
| Services billed | 33 across 3 procedure codes |
| Paid by Medicare | $2,717 |
Part D prescriptions in 2024
| Prescriptions (claims) | 447 · 657 30-day fills |
|---|---|
| Patients | 37 |
| Total drug cost | $118,579 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Warren Alpert Medical School of Brown University |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Neurology |
| Telehealth | Offers telehealth |
Industry payments (Open Payments)
- 2025$131.93 · 6 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tg Therapeutics, Inc. | $94.09 | 4 |
| Biogen, Inc. | $37.84 | 2 |
What the 2025 payments were for
- Food and Beverage$131.93 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 70 neurologists in Providence · All neurologists in Rhode Island