Leonel Fernando Hernandez Aya, MD
NPI 1427288893ActiveIndividual· Internal Medicine, Medical Oncology· Miami, FL
Internal Medicine, Medical Oncology (MD) with University of Miami, practicing in Miami, Florida. Their prescriptions cost Medicare Part D more than their services did: $635,706 for 279 claims, against $38,585 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 9 companies reporting payments in 2025, $291.00 in all, mostly food and beverage. Lists Barnes Jewish Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1427288893 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 20, 2009 |
| Last updated in NPPES | Sep 8, 2023 |
| Certified by provider | Sep 8, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | ME149894 | FL |
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 - Medical Oncology (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 129 |
|---|---|
| Services billed | 642 across 17 procedure codes |
| Paid by Medicare | $38,585 |
Part D prescriptions in 2024
| Prescriptions (claims) | 279 · 355 30-day fills |
|---|---|
| Patients | 55 |
| Total drug cost | $635,706 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 2007 |
|---|---|
| Medicare specialty | Medical Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- University of MiamiMiami, FL · 2,377 clinicians
Hospital affiliations
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Jackson Health SystemMiami, FL
- Missouri Baptist Medical CenterSaint Louis, MO
Industry payments (Open Payments)
- 2025$291.00 · 13 payments from 9 companies
- 2024$2,567 · 15 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $58.50 | 3 |
| Sun Pharmaceutical Industries Inc. | $46.18 | 2 |
| Array Biopharma Inc | $40.73 | 2 |
| Regeneron Pharmaceuticals, Inc. | $31.91 | 1 |
| Regeneron Healthcare Solutions, Inc. | $31.23 | 1 |
What the 2025 payments were for
- Food and Beverage$291.00 · 13 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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