John Howard Frierson, M.D.
NPI 1326021015ActiveIndividual· Internal Medicine, Interventional Cardiology· San Antonio, TX
Internal Medicine, Interventional Cardiology (M.D.) in San Antonio, Texas, trained at University of Texas Medical School at San Antonio (class of 1982). Their prescriptions cost Medicare Part D more than their services did: $1,249,949 for 8,036 claims, against $266,709 paid for services in 2024. Novo Nordisk Inc was the largest of 10 companies reporting payments in 2025, $567.96 in all, mostly food and beverage.
Overview
| NPI | 1326021015 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Nov 28, 2005 |
| Last updated in NPPES | Mar 29, 2022 |
| Certified by provider | Mar 29, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | G3371 | TX |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | G3371 | TX |
| Internal Medicine | 207R00000X | G3371 | 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 - Interventional Cardiology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 478 |
|---|---|
| Services billed | 3,308 across 63 procedure codes |
| Paid by Medicare | $266,709 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,036 · 21,770 30-day fills |
|---|---|
| Patients | 723 |
| Total drug cost | $1,249,949 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Interventional Cardiology |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical group
- Methodist Physician Practices PLLCLive Oak, TX · 175 clinicians
Hospital affiliations
- Baptist Medical CenterSan Antonio, TX
- Connally Memorial Medical CenterFloresville, TX
- Frio Regional HospitalPearsall, TX
- Methodist HospitalSan Antonio, TX
- Methodist Hospital AtascosaJourdanton, TX
Industry payments (Open Payments)
- 2025$567.96 · 26 payments from 10 companies
- 2024$291.17 · 14 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $138.59 | 9 |
| Abbott Laboratories | $81.01 | 1 |
| Boston Scientific Corporation | $78.53 | 3 |
| Lilly USA, LLC | $60.15 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $59.72 | 3 |
What the 2025 payments were for
- Food and Beverage$567.96 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 67 interventional cardiologists in San Antonio · All interventional cardiologists in Texas