Shirley A. Williams, M.D.
NPI 1346298304ActiveIndividual· Internal Medicine, Cardiovascular Disease· Flower Mound, TX
Internal Medicine, Cardiovascular Disease (M.D.) in Flower Mound, Texas, trained at University of Iowa, Rj & L Carver College of Medicine (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $1,635,970 for 10,662 claims, against $231,148 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 10 companies reporting payments in 2025, $1,184 in all, mostly food and beverage.
Overview
| NPI | 1346298304 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 4, 2006 |
| Last updated in NPPES | Jul 27, 2023 |
| Certified by provider | Jul 26, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | G7379 | 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 - Cardiovascular Disease (Cardiology) (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,526 |
|---|---|
| Services billed | 4,209 across 44 procedure codes |
| Paid by Medicare | $231,148 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,662 · 26,466 30-day fills |
|---|---|
| Patients | 1,365 |
| Total drug cost | $1,635,970 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Iowa, Rj & L Carver College of Medicine |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Texas Health Physicians GroupFort Worth, TX · 1,365 clinicians
Hospital affiliations
- Medical City LewisvilleLewisville, TX
- Texas Health Presbyterian Hospital DentonDenton, TX
- Texas Health Presbyterian Hospital Flower MoundFlower Mound, TX
- The Heart Hospital Baylor DentonDenton, TX
Industry payments (Open Payments)
- 2025$1,184 · 77 payments from 10 companies
- 2024$1,230 · 62 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $279.54 | 34 |
| Merck Sharp & Dohme LLC | $232.16 | 10 |
| Novartis Pharmaceuticals Corporation | $218.89 | 11 |
| Pfizer Inc. | $144.49 | 8 |
| Boston Scientific Corporation | $83.62 | 3 |
What the 2025 payments were for
- Food and Beverage$1,181 · 76 payments
- Education$3.20 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Cardiovascular Disease providers in Flower Mound
- 1568284685
- 1457222002
- 1053640383
- 1013446327
- 1700222486
- 1427083203
All Internal Medicine, Cardiovascular Disease providers in Texas →