Flavio Humberto Alvarez, MD
NPI 1932175601ActiveIndividual· Internal Medicine, Nephrology· Live Oak, TX
Internal Medicine, Nephrology (MD) with Renal Associates, P.A., practicing in Live Oak, Texas. Their prescriptions cost Medicare Part D more than their services did: $974,426 for 3,178 claims, against $213,396 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 16 companies reporting payments in 2025, $1,464 in all, mostly food and beverage. Lists Baptist Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1932175601 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 23, 2006 |
| Last updated in NPPES | Oct 12, 2022 |
| Certified by provider | Oct 12, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | K4849 | TX |
| Emergency Medicine | 207P00000X | K4849 | 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 | 402 |
|---|---|
| Services billed | 2,809 across 38 procedure codes |
| Paid by Medicare | $213,396 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,178 · 5,514 30-day fills |
|---|---|
| Patients | 457 |
| Total drug cost | $974,426 |
| Generic share | 70% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Hospitalist |
| Telehealth | Offers telehealth |
Medical group
- Renal Associates, P.A.Seguin, TX · 40 clinicians
Hospital affiliations
- Baptist Medical CenterSan Antonio, TX
- Uvalde Memorial HospitalUvalde, TX
Other facilities
- Bma Northwest Bexar CountyDialysis facility · San Antonio, TX
- Broadway Kidney Disease CenterDialysis facility · San Antonio, TX
- Kidney Disease Clinic of UvaldeDialysis facility · Uvalde, TX
- Warm Springs Rehab Hospital of San Antonio LLCInpatient rehabilitation facility · San Antonio, TX
Industry payments (Open Payments)
- 2025$1,464 · 85 payments from 16 companies
- 2024$2,100 · 102 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $215.32 | 12 |
| Fresenius USA Marketing, Inc. | $200.97 | 21 |
| Novo Nordisk Inc | $177.04 | 4 |
| Opko Pharmaceuticals, LLC | $158.63 | 17 |
| Calliditas Therapeutics US Inc. | $113.51 | 4 |
What the 2025 payments were for
- Food and Beverage$1,464 · 85 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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