Antonio Luis Diaz Hernandez, MD
NPI 1003016775ActiveIndividual· Internal Medicine, Nephrology· San Juan, PR
Internal Medicine, Nephrology (MD) in San Juan, Puerto Rico, trained at Ponce School of Medicine (class of 2005). Their prescriptions cost Medicare Part D more than their services did: $344,877 for 1,893 claims, against $14,396 paid for services in 2024. Scpharmaceuticals Inc. was the largest of 8 companies reporting payments in 2025, $488.00 in all, mostly food and beverage.
Overview
| NPI | 1003016775 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 20, 2007 |
| Last updated in NPPES | Oct 26, 2022 |
| Certified by provider | Oct 20, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 17173 | PR |
| Internal Medicine | 207R00000X | 26095 | PR |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nephrology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 145 across 8 procedure codes |
| Paid by Medicare | $14,396 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,893 · 2,400 30-day fills |
|---|---|
| Patients | 169 |
| Total drug cost | $344,877 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Ponce School of Medicine |
|---|---|
| Graduation year | 2005 |
| Medicare specialty | Nephrology |
Hospital affiliations
- Hospital Espanol Auxilio Mutuo San PabloBayamon, PR
- Hospital Pavia SanturceSan Juan, PR
Other facilities
- Fmc Santa JuanitaDialysis facility · Bayamon, PR
Industry payments (Open Payments)
- 2025$488.00 · 14 payments from 8 companies
- 2024$404.31 · 11 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Scpharmaceuticals Inc. | $124.95 | 1 |
| Boston Scientific Corporation | $107.91 | 2 |
| Astrazeneca Pharmaceuticals LP | $66.88 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $59.57 | 2 |
| Bayer Puerto Rico Inc. | $46.40 | 2 |
What the 2025 payments were for
- Food and Beverage$488.00 · 14 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Nephrology providers in Puerto Rico →