William A. Rizk, MD
NPI 1659347128ActiveIndividual· Surgery· Dakota Dunes, SD
Surgery (MD) in Dakota Dunes, South Dakota, trained at Sanford School of Medicine of University of South Dakota (class of 1994). 49 Medicare patients in 2024, $12,767 paid; nearly all of their 54 Part D prescriptions were generic (96%). Heron Therapeutics, Inc. was the largest of 2 companies reporting payments in 2025, $30.15 in all, mostly food and beverage.
Overview
| NPI | 1659347128 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 24, 2006 |
| Last updated in NPPES | May 21, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 4638 | SD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - General Surgery (IA); Practitioner - General Surgery (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 76 across 33 procedure codes |
| Paid by Medicare | $12,767 |
Part D prescriptions in 2024
| Prescriptions (claims) | 54 · 92 30-day fills |
|---|---|
| Patients | 22 |
| Total drug cost | $1,849 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Sanford School of Medicine of University of South Dakota |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | General Surgery |
Medical group
- Cass County Memorial HospitalAtlantic, IA · 68 clinicians
Hospital affiliation
- Cass County Memorial HospitalAtlantic, IA
Industry payments (Open Payments)
- 2025$30.15 · 2 payments from 2 companies
- 2024$161.52 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Heron Therapeutics, Inc. | $15.63 | 1 |
| Ethicon US, LLC | $14.52 | 1 |
What the 2025 payments were for
- Food and Beverage$30.15 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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