Mariano E. Gonzalez Diez, MD
NPI 1295713055ActiveIndividual· Otolaryngology· Arecibo, PR
Otolaryngology (MD) in Arecibo, Puerto Rico, trained at University of Puerto Rico School of Medicine (class of 1985). Their prescriptions cost Medicare Part D more than their services did: $278,816 for 3,777 claims, against $13,999 paid for services in 2024. Genzyme Corporation was the largest of 4 companies reporting payments in 2025, $136.52 in all, mostly food and beverage.
Overview
| NPI | 1295713055 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jan 3, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Otolaryngology Primary | 207Y00000X | 8699 | PR |
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 - Otolaryngology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 162 across 19 procedure codes |
| Paid by Medicare | $13,999 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,777 · 4,065 30-day fills |
|---|---|
| Patients | 1,347 |
| Total drug cost | $278,816 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | University of Puerto Rico School of Medicine |
|---|---|
| Graduation year | 1985 |
| Medicare specialty | Otolaryngology |
Industry payments (Open Payments)
- 2025$136.52 · 5 payments from 4 companies
- 2024$94.60 · 4 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $52.74 | 2 |
| Amgen Inc. | $34.00 | 1 |
| Merck Sharp & Dohme LLC | $25.70 | 1 |
| Glaxosmithkline, LLC. | $24.08 | 1 |
What the 2025 payments were for
- Food and Beverage$76.82 · 3 payments
- Education$59.70 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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