Shelley Williamson, M.D.
Opted out of Medicare from July 2026 to July 2028. Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) in Houston, Texas, trained at University of Texas Medical School at San Antonio (class of 2016). Their prescriptions cost Medicare Part D more than their services did: $560,409 for 1,169 claims, against $2,036 paid for services in 2024. Senseonics, Incorporated was the largest of 23 companies reporting payments in 2025, $4,659 in all, mostly food and beverage.
Overview
| NPI | 1710341177 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 11, 2016 |
| Last updated in NPPES | May 20, 2024 |
| Certified by provider | May 20, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | T3719 | TX |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jul 1, 2026 – Jul 1, 2028 |
| Can order and refer | Yes |
| Accepts assignment | Yes (participating) |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Medicare services in 2024
| Medicare patients | 53 |
|---|---|
| Services billed | 63 across 7 procedure codes |
| Paid by Medicare | $2,036 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,169 · 2,624 30-day fills |
|---|---|
| Patients | 227 |
| Total drug cost | $560,409 |
| Generic share | 37% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 2016 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Houston Methodist West HospitalHouston, TX
Industry payments (Open Payments)
- 2025$4,659 · 137 payments from 23 companies
- 2024$2,278 · 111 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Senseonics, Incorporated | $2,000 | 5 |
| Ascensia Diabetes Care US Inc. | $358.87 | 10 |
| Novo Nordisk Inc | $338.22 | 17 |
| Dexcom, Inc. | $314.52 | 5 |
| Cequr Corporation | $271.53 | 14 |
What the 2025 payments were for
- Food and Beverage$2,659 · 132 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$2,000 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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