Cesar F. Hernandez-Arroyo, M.D.
NPI 1528473733ActiveIndividual· Internal Medicine, Nephrology· San Juan, PR
Internal Medicine, Nephrology (M.D.) in San Juan, Puerto Rico, trained at San Juan Bautista School of Medicine (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $451,297 for 2,246 claims, against $18,775 paid for services in 2024. Bayer Healthcare Pharmaceuticals Inc. was the largest of 15 companies reporting payments in 2025, $2,400 in all, mostly food and beverage.
Overview
| NPI | 1528473733 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 25, 2014 |
| Last updated in NPPES | Aug 16, 2021 |
| Certified by provider | Aug 16, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 19128 | PR |
| Internal Medicine | 207R00000X | 19128 | PR |
| Internal Medicine, Nephrology | 207RN0300X | 73735-20 | WI |
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 | 35 |
|---|---|
| Services billed | 218 across 35 procedure codes |
| Paid by Medicare | $18,775 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,246 · 4,998 30-day fills |
|---|---|
| Patients | 399 |
| Total drug cost | $451,297 |
| Generic share | 76% of claims |
Education and affiliations
| Medical school | San Juan Bautista School of Medicine |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Access Care Physicians of Puerto Rico LLCJuana Diaz, PR · 4 clinicians
Hospital affiliation
- Auxilio Mutuo HospitalSan Juan, PR
Industry payments (Open Payments)
- 2025$2,400 · 37 payments from 15 companies
- 2024$3,970 · 50 payments from 17 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Bayer Healthcare Pharmaceuticals Inc. | $366.09 | 3 |
| Novartis Pharmaceuticals Corporation | $275.72 | 3 |
| Novo Nordisk Inc | $241.75 | 3 |
| Vifor Pharma, Inc. | $241.34 | 5 |
| Astrazeneca Pharmaceuticals LP | $193.71 | 4 |
What the 2025 payments were for
- Food and Beverage$2,400 · 37 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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