Gregory Alan Buser, M.D.
NPI 1548280407ActiveIndividual· Internal Medicine, Cardiovascular Disease· San Antonio, TX
Internal Medicine, Cardiovascular Disease (M.D.) in San Antonio, Texas, trained at Johns Hopkins University School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $684,293 for 3,027 claims, against $134,197 paid for services in 2024. Abbott Laboratories was the largest of 3 companies reporting payments in 2025, $1,008 in all, mostly travel and lodging.
Overview
| NPI | 1548280407 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 20, 2006 |
| Last updated in NPPES | Jan 13, 2026 |
| Certified by provider | Jan 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | K0657 | 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 - Cardiac Electrophysiology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 798 |
|---|---|
| Services billed | 2,998 across 66 procedure codes |
| Paid by Medicare | $134,197 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,027 · 8,058 30-day fills |
|---|---|
| Patients | 481 |
| Total drug cost | $684,293 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Johns Hopkins University School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Cardiac Electrophysiology |
| Secondary specialties | Cardiovascular Disease (Cardiology), Internal Medicine |
Medical group
- Bhs Physicians Network, IncBrownsville, TX · 706 clinicians
Hospital affiliations
- Baptist Medical CenterSan Antonio, TX
- Baptist Neighborhood Hospital Thousand OaksSan Antonio, TX
- Resolute Health HospitalNew Braunfels, TX
Industry payments (Open Payments)
- 2025$1,008 · 12 payments from 3 companies
- 2024$88.05 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $983.31 | 10 |
| Novartis Pharmaceuticals Corporation | $15.31 | 1 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $8.98 | 1 |
What the 2025 payments were for
- Travel and Lodging$674.94 · 4 payments
- Food and Beverage$332.66 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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