Nixzaliz Rodriguez Rivera, M. D.
NPI 1801031471ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Ponce, PR
Internal Medicine, Endocrinology, Diabetes & Metabolism (M. D.) in Ponce, Puerto Rico, licensed in PR, with an NPI issued in December 2008. Their prescriptions cost Medicare Part D more than their services did: $4,012,200 for 19,499 claims, against $3,068 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 7 companies reporting payments in 2025, $591.01 in all, mostly food and beverage.
Overview
| NPI | 1801031471 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M. D. |
| Sole proprietor | No |
| NPI issued | Dec 10, 2008 |
| Last updated in NPPES | Jan 30, 2024 |
| Certified by provider | Jan 30, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 17383 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 36 |
|---|---|
| Services billed | 52 across 5 procedure codes |
| Paid by Medicare | $3,068 |
Part D prescriptions in 2024
| Prescriptions (claims) | 19,499 · 25,114 30-day fills |
|---|---|
| Patients | 1,359 |
| Total drug cost | $4,012,200 |
| Generic share | 38% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
Industry payments (Open Payments)
- 2025$591.01 · 19 payments from 7 companies
- 2024$971.62 · 29 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $142.87 | 2 |
| Bayer Puerto Rico Inc. | $134.26 | 5 |
| Astrazeneca Pharmaceuticals LP | $85.45 | 4 |
| Novo Nordisk Inc | $76.74 | 3 |
| Eli Lilly Export S.A. Puerto Rico Branch | $59.94 | 2 |
What the 2025 payments were for
- Food and Beverage$570.79 · 18 payments
- Education$20.22 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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