Cassidy Williams, DO
NPI 1578211140ActiveIndividual· Surgery· Chicago, IL
Surgery (DO) in Chicago, Illinois, licensed in IL, with an NPI issued in March 2022. Part D covered 11 prescriptions written in 2024, 100% of them generic. Boston Scientific Corporation was the largest of 5 companies reporting payments in 2025, $1,246 in all, mostly food and beverage.
Overview
| NPI | 1578211140 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Mar 14, 2022 |
| Last updated in NPPES | Sep 20, 2023 |
| Certified by provider | Sep 20, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 125.082539 | IL |
| Student in an Organized Health Care Education/Training Program | 390200000X | 125.082539 | 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) | Enrolled Order and Referring Only - General Surgery (IL) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 11 · 15 30-day fills |
|---|---|
| Total drug cost | $292.51 |
| Generic share | 100% of claims |
Industry payments (Open Payments)
- 2025$1,246 · 15 payments from 5 companies
- 2024$496.15 · 4 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $424.08 | 5 |
| Stryker Corporation | $363.01 | 5 |
| W. L. Gore & Associates, Inc. | $294.63 | 3 |
| Penumbra, Inc. | $130.73 | 1 |
| Okami Medical, Inc. | $33.78 | 1 |
What the 2025 payments were for
- Food and Beverage$1,246 · 15 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 622 general surgeons in Chicago · All general surgeons in Illinois