Winston Schuyler Marshall, M.D.
NPI 1447287057ActiveIndividual· Internal Medicine, Interventional Cardiology· Denison, TX
Internal Medicine, Interventional Cardiology (M.D.) in Denison, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $792,162 for 5,260 claims, against $289,399 paid for services in 2024. Aop Health US, LLC was the largest of 18 companies reporting payments in 2025, $1,064 in all, mostly food and beverage.
Overview
| NPI | 1447287057 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 27, 2006 |
| Last updated in NPPES | Oct 9, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | J6564 | TX |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | J6564 | TX |
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 - Interventional Cardiology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,938 |
|---|---|
| Services billed | 5,825 across 71 procedure codes |
| Paid by Medicare | $289,399 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,260 · 12,791 30-day fills |
|---|---|
| Patients | 805 |
| Total drug cost | $792,162 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical group
- Healthtexas Provider NetworkWaxahachie, TX · 2,697 clinicians
Hospital affiliations
- Baylor Scott & White the Heart Hospital PlanoPlano, TX
- Baylor Scott and White Medical Center McKinneyMc Kinney, TX
- Baylor Scott and White Surgical Hospital at ShermaSherman, TX
- Baylor Scott and White the Heart Hospital CorinthDenton, TX
- Texoma Medical CenterDenison, TX
Industry payments (Open Payments)
- 2025$1,064 · 33 payments from 18 companies
- 2024$1,789 · 66 payments from 19 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aop Health US, LLC | $338.60 | 2 |
| Abbott Laboratories | $103.39 | 4 |
| Bayer Healthcare Pharmaceuticals Inc. | $102.80 | 5 |
| Merck Sharp & Dohme LLC | $87.50 | 4 |
| Heartflow, Inc. | $63.18 | 3 |
What the 2025 payments were for
- Food and Beverage$1,024 · 31 payments
- Education$40.44 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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