John Andrew Williamson, M.D.
NPI 1083732176ActiveIndividual· Radiology, Diagnostic Radiology· Austin, TX
Radiology, Diagnostic Radiology (M.D.) in Austin, Texas, trained at Duke University School of Medicine (class of 1998). Mostly services rather than prescriptions: Medicare paid $104,662 for 2,126 patients in 2024, with only 40 Part D claims. Boston Scientific Corporation was the largest of 7 companies reporting payments in 2025, $1,970 in all, mostly food and beverage.
Overview
| NPI | 1083732176 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Mar 27, 2007 |
| Last updated in NPPES | Mar 15, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Diagnostic Radiology Primary | 2085R0202X | N3389 | TX |
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 Practitioner - Diagnostic Radiology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,126 |
|---|---|
| Services billed | 4,889 across 205 procedure codes |
| Paid by Medicare | $104,662 |
Part D prescriptions in 2024
| Prescriptions (claims) | 40 · 41 30-day fills |
|---|---|
| Total drug cost | $223.44 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Duke University School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Diagnostic Radiology |
| Telehealth | Offers telehealth |
Medical groups
- Singleton Associates PATyler, TX · 838 clinicians
- Austin Radiological AssociationAustin, TX · 127 clinicians
Hospital affiliations
- Ascension Seton Medical Center AustinAustin, TX
- North Austin Medical CenterAustin, TX
- Round Rock Medical CenterRound Rock, TX
- St David's Medical CenterAustin, TX
- St David's South Austin Medical CenterAustin, TX
Industry payments (Open Payments)
- 2025$1,970 · 16 payments from 7 companies
- 2024$492.46 · 8 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $1,223 | 8 |
| Sirtex Medical Inc | $201.81 | 1 |
| Stryker Corporation | $172.50 | 1 |
| Medtronic, Inc. | $149.56 | 3 |
| Cook Medical LLC | $110.78 | 1 |
What the 2025 payments were for
- Food and Beverage$1,146 · 12 payments
- Travel and Lodging$823.70 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other diagnostic radiologists in Austin
- 1194179937
- 1205869161
- 1245290469
- 1396705257
- 1427030410
- 1902082753
- 1013028612
- 1013911783
- 1043691702
- 1093719825
- 1134412653
- 1154325785
All 155 diagnostic radiologists in Austin · All diagnostic radiologists in Texas