Gregory Alan Hamon, MD
NPI 1225033194ActiveIndividual· Surgery· San Antonio, TX
Surgery (MD) in San Antonio, Texas, trained at University of Texas Southwestern Medical School at Dallas (class of 1989). Mostly services rather than prescriptions: Medicare paid $51,150 for 64 patients in 2024, with only 47 Part D claims. Tela Bio, Inc. was the largest of 2 companies reporting payments in 2025, $126.83 in all, mostly food and beverage.
Overview
| NPI | 1225033194 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 16, 2005 |
| Last updated in NPPES | Nov 4, 2024 |
| Certified by provider | Nov 4, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | H8107 | TX |
| Phlebology | 202K00000X | H8107 | TX |
| Surgery | 208600000X | A049434 | CA |
| Surgery, Vascular Surgery | 2086S0129X | A049434 | CA |
| Surgery, Vascular Surgery | 2086S0129X | H8107 | 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 - General Surgery (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 64 |
|---|---|
| Services billed | 140 across 35 procedure codes |
| Paid by Medicare | $51,150 |
Part D prescriptions in 2024
| Prescriptions (claims) | 47 · 47 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $591.15 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Texas Southwestern Medical School at Dallas |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | General Surgery |
Hospital affiliations
- Methodist HospitalSan Antonio, TX
- Methodist Hospital Stone OakSan Antonio, TX
Industry payments (Open Payments)
- 2025$126.83 · 2 payments from 2 companies
- 2024$395.85 · 8 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tela Bio, Inc. | $111.04 | 1 |
| Pacira Pharmaceuticals Incorporated | $15.79 | 1 |
What the 2025 payments were for
- Food and Beverage$126.83 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 205 general surgeons in San Antonio · All general surgeons in Texas