William S. Stevens, M.D.
NPI 1548241250ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Springfield, IL
Thoracic Surgery (Cardiothoracic Vascular Surgery) (M.D.) in Springfield, Illinois, trained at Medical University of South Carolina College of Medicine (class of 1982). 267 Medicare patients in 2024, $287,618 paid; nearly all of their 327 Part D prescriptions were generic (96%). Chiesi USA, Inc. reported $23.57 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1548241250 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 9, 2005 |
| Last updated in NPPES | Dec 7, 2020 |
| Certified by provider | Dec 7, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | 036083480 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 267 |
|---|---|
| Services billed | 581 across 53 procedure codes |
| Paid by Medicare | $287,618 |
Part D prescriptions in 2024
| Prescriptions (claims) | 327 · 540 30-day fills |
|---|---|
| Patients | 124 |
| Total drug cost | $11,173 |
| Generic share | 96% of claims |
Education and affiliations
| Medical school | Medical University of South Carolina College of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Thoracic Surgery |
Medical group
- Siu Physicians and Surgeons IncSpringfield, IL · 314 clinicians
Hospital affiliations
- Memorial Medical CenterSpringfield, IL
- Pana Community HospitalPana, IL
- St Anthonys Memorial HospitalEffingham, IL
- St Francis HospitalLitchfield, IL
- St Johns HospitalSpringfield, IL
Industry payments (Open Payments)
- 2025$23.57 · 1 payment from 1 company
- 2024$356.94 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Chiesi USA, Inc. | $23.57 | 1 |
What the 2025 payments were for
- Food and Beverage$23.57 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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