Carlos E. Mendez Serrano, MD
NPI 1861541914ActiveIndividual· Internal Medicine, Hematology & Oncology· Caguas, PR
Internal Medicine, Hematology & Oncology (MD) in Caguas, Puerto Rico, trained at University Central del Caribe Escuela de Medicina (class of 2003). Their prescriptions cost Medicare Part D more than their services did: $7,240,696 for 1,828 claims, against $117,708 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 29 companies reporting payments in 2025, $3,344 in all, mostly food and beverage.
Overview
| NPI | 1861541914 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jan 9, 2007 |
| Last updated in NPPES | Jan 30, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 17775 | 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 - Hematology/Oncology (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 19 |
|---|---|
| Services billed | 5,419 across 22 procedure codes |
| Paid by Medicare | $117,708 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,828 · 2,009 30-day fills |
|---|---|
| Patients | 234 |
| Total drug cost | $7,240,696 |
| Generic share | 71% of claims |
Education and affiliations
| Medical school | University Central del Caribe Escuela de Medicina |
|---|---|
| Graduation year | 2003 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Advanced Hematology and Oncology of Puerto RicoCaguas, PR · 6 clinicians
Hospital affiliations
- Hospital Menonita Caguas IncCaguas, PR
- Hospital Pavia CaguasCaguas, PR
Industry payments (Open Payments)
- 2025$3,344 · 150 payments from 29 companies
- 2024$8,203 · 134 payments from 29 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $495.52 | 21 |
| Pbg Puerto Rico LLC | $247.28 | 11 |
| Genentech USA, Inc. | $244.85 | 11 |
| Novartis Pharmaceuticals Corporation | $244.15 | 11 |
| Glaxosmithkline, LLC. | $219.34 | 13 |
What the 2025 payments were for
- Food and Beverage$3,344 · 150 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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