Andrea Del Toro Diez, MD
NPI 1437551314ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· San Juan, PR
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) in San Juan, Puerto Rico, licensed in PR, with an NPI issued in September 2014. Their prescriptions cost Medicare Part D more than their services did: $2,329,571 for 6,490 claims, against $5,876 paid for services in 2024. Lilly USA, LLC was the largest of 4 companies reporting payments in 2025, $285.82 in all, mostly food and beverage.
Overview
| NPI | 1437551314 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 22, 2014 |
| Last updated in NPPES | Feb 9, 2026 |
| Certified by provider | Feb 9, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 21393 | PR |
| Internal Medicine | 207R00000X | 21393 | 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 - Endocrinology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 30 |
|---|---|
| Services billed | 80 across 10 procedure codes |
| Paid by Medicare | $5,876 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,490 · 10,466 30-day fills |
|---|---|
| Patients | 647 |
| Total drug cost | $2,329,571 |
| Generic share | 40% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
Industry payments (Open Payments)
- 2025$285.82 · 4 payments from 4 companies
- 2024$702.64 · 16 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $118.71 | 1 |
| Madrigal Pharmaceuticals | $118.27 | 1 |
| Bayer Puerto Rico Inc. | $25.00 | 1 |
| Novo Nordisk Inc | $23.84 | 1 |
What the 2025 payments were for
- Food and Beverage$285.82 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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