Victor Herman Villarreal, MD
NPI 1649246463ActiveIndividual· Internal Medicine, Nephrology· San Antonio, TX
Internal Medicine, Nephrology (MD) with Renal Associates, P.A., practicing in San Antonio, Texas. Their prescriptions cost Medicare Part D more than their services did: $479,304 for 2,101 claims, against $163,612 paid for services in 2024. Novo Nordisk Inc was the largest of 6 companies reporting payments in 2025, $476.02 in all, mostly food and beverage. Lists Christus Santa Rosa Medical Center and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1649246463 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 23, 2006 |
| Last updated in NPPES | Mar 14, 2025 |
| Certified by provider | Mar 14, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | G9926 | 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 - Nephrology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 342 |
|---|---|
| Services billed | 2,954 across 29 procedure codes |
| Paid by Medicare | $163,612 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,101 · 4,726 30-day fills |
|---|---|
| Patients | 297 |
| Total drug cost | $479,304 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1970 |
|---|---|
| Medicare specialty | Nephrology |
| Telehealth | Offers telehealth |
Medical group
- Renal Associates, P.A.Seguin, TX · 40 clinicians
Hospital affiliations
- Christus Santa Rosa Medical CenterSan Antonio, TX
- Methodist HospitalSan Antonio, TX
- Westover Hills Baptist HospitalSan Antonio, TX
Other facilities
- Bma Northwest Bexar CountyDialysis facility · San Antonio, TX
- Fmc Dialysis Services of IngramDialysis facility · San Antonio, TX
Industry payments (Open Payments)
- 2025$476.02 · 23 payments from 6 companies
- 2024$425.32 · 21 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $154.47 | 7 |
| Novartis Pharmaceuticals Corporation | $141.84 | 7 |
| Lilly USA, LLC | $72.98 | 3 |
| Amgen Inc. | $69.29 | 4 |
| Astrazeneca Pharmaceuticals LP | $22.28 | 1 |
What the 2025 payments were for
- Food and Beverage$476.02 · 23 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 168 nephrologists in San Antonio · All nephrologists in Texas