Billie Joe Marek, MD
NPI 1346282209ActiveIndividual· Internal Medicine, Medical Oncology· McAllen, TX
Internal Medicine, Medical Oncology (MD) in McAllen, Texas, trained at University of Texas Medical School at San Antonio (class of 1983). In 2024 Medicare paid $1,759,139 for 481 patients, and Part D covered 817 of their prescriptions, 81% of them generic. Genentech USA, Inc. was the largest of 6 companies reporting payments in 2025, $187.22 in all, mostly food and beverage.
Overview
| NPI | 1346282209 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 12, 2006 |
| Last updated in NPPES | Aug 31, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | H3700 | 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 - Medical Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 481 |
|---|---|
| Services billed | 108,214 across 142 procedure codes |
| Paid by Medicare | $1,759,139 |
Part D prescriptions in 2024
| Prescriptions (claims) | 817 · 1,307 30-day fills |
|---|---|
| Patients | 148 |
| Total drug cost | $2,174,450 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | University of Texas Medical School at San Antonio |
|---|---|
| Graduation year | 1983 |
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Regional Employee Assistance Program IncLaredo, TX · 105 clinicians
Hospital affiliations
- Cuero Regional HospitalCuero, TX
- De Tar Hospital NavarroVictoria, TX
- El Campo Memorial HospitalEl Campo, TX
- Lavaca Medical CenterHallettsville, TX
- Yoakum Community HospitalYoakum, TX
Industry payments (Open Payments)
- 2025$187.22 · 9 payments from 6 companies
- 2024$107.07 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genentech USA, Inc. | $70.69 | 3 |
| Astellas Pharma US Inc | $43.27 | 2 |
| Eisai Inc. | $23.27 | 1 |
| E.R. Squibb & Sons, L.L.C. | $20.29 | 1 |
| Aveo Pharmaceuticals, Inc. | $15.00 | 1 |
What the 2025 payments were for
- Food and Beverage$172.22 · 8 payments
- Education$15.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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