Angel B. Rivera Santos, MD
NPI 1801856026ActiveIndividual· Internal Medicine, Nephrology· Ponce, PR
Internal Medicine, Nephrology (MD) in Ponce, Puerto Rico, trained at Ponce School of Medicine (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $992,402 for 7,000 claims, against $14,180 paid for services in 2024. Bayer Puerto Rico Inc. was the largest of 9 companies reporting payments in 2025, $1,983 in all, mostly food and beverage.
Overview
| NPI | 1801856026 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 23, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 12002 | 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 - Nephrology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 58 |
|---|---|
| Services billed | 174 across 8 procedure codes |
| Paid by Medicare | $14,180 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,000 · 9,293 30-day fills |
|---|---|
| Patients | 725 |
| Total drug cost | $992,402 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Ponce School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Nephrology |
Hospital affiliations
- Hospital Damas IncPonce, PR
- Hospital Episcopal San Lucas IIPonce, PR
Other facilities
- Atlantis PonceDialysis facility · Ponce, PR
Industry payments (Open Payments)
- 2025$1,983 · 41 payments from 9 companies
- 2024$929.57 · 31 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Puerto Rico Inc. | $455.33 | 15 |
| Bayer Healthcare Pharmaceuticals Inc. | $388.59 | 4 |
| Amgen Inc. | $317.06 | 6 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $163.35 | 3 |
| Vifor Pharma, Inc. | $161.74 | 5 |
What the 2025 payments were for
- Food and Beverage$1,950 · 39 payments
- Education$32.22 · 2 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 →