William C. Fuller, M.D.
NPI 1518939024ActiveIndividual· Psychiatry & Neurology, Psychiatry· Sioux Falls, SD
Psychiatry & Neurology, Psychiatry (M.D.) in Sioux Falls, South Dakota, trained at University of Nebraska College of Medicine (class of 1972). Their prescriptions cost Medicare Part D more than their services did: $185,090 for 1,465 claims, against $14,955 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 12 companies reporting payments in 2025, $648.34 in all, mostly food and beverage.
Overview
| NPI | 1518939024 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 7, 2006 |
| Last updated in NPPES | Dec 11, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychiatry & Neurology, Psychiatry Primary | 2084P0800X | 2080 | SD |
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 - Psychiatry (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 111 |
|---|---|
| Services billed | 334 across 5 procedure codes |
| Paid by Medicare | $14,955 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,465 · 2,095 30-day fills |
|---|---|
| Patients | 86 |
| Total drug cost | $185,090 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | University of Nebraska College of Medicine |
|---|---|
| Graduation year | 1972 |
| Medicare specialty | Psychiatry |
| Telehealth | Offers telehealth |
Hospital affiliation
- Avera McKennan Hospital & University Health CenterSioux Falls, SD
Industry payments (Open Payments)
- 2025$648.34 · 25 payments from 12 companies
- 2024$551.83 · 12 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $166.48 | 4 |
| Janssen Scientific Affairs, LLC | $129.25 | 1 |
| Acadia Pharmaceuticals Inc | $90.10 | 3 |
| Teva Pharmaceuticals USA, Inc. | $67.70 | 4 |
| Corium, LLC | $50.57 | 4 |
What the 2025 payments were for
- Food and Beverage$648.34 · 25 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 83 psychiatrists in Sioux Falls · All psychiatrists in South Dakota