Rafael Perez, MD
NPI 1659364644ActiveIndividual· Internal Medicine, Hematology & Oncology· Manati, PR
Internal Medicine, Hematology & Oncology (MD) with Doctor's Center Hematology and Oncology Group, PSC, practicing in Manati, Puerto Rico. Their prescriptions cost Medicare Part D more than their services did: $6,639,269 for 2,577 claims, against $311,183 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 28 companies reporting payments in 2025, $3,038 in all, mostly food and beverage. Lists Doctors' Center Hospital, Inc as a hospital affiliation.
Overview
| NPI | 1659364644 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 25, 2005 |
| Last updated in NPPES | Aug 3, 2026 |
| Certified by provider | Aug 3, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 13501 | 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 | 31 |
|---|---|
| Services billed | 13,410 across 41 procedure codes |
| Paid by Medicare | $311,183 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,577 · 2,855 30-day fills |
|---|---|
| Patients | 378 |
| Total drug cost | $6,639,269 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
Medical group
- Doctor's Center Hematology and Oncology Group, PSCArecibo, PR · 6 clinicians
Hospital affiliation
- Doctors' Center Hospital, IncManati, PR
Industry payments (Open Payments)
- 2025$3,038 · 125 payments from 28 companies
- 2024$2,872 · 115 payments from 22 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $370.71 | 13 |
| E.R. Squibb & Sons, L.L.C. | $256.48 | 11 |
| Novartis Pharmaceuticals Corporation | $205.13 | 9 |
| Merck Sharp & Dohme LLC | $199.31 | 9 |
| Tempus Ai, Inc | $195.58 | 8 |
What the 2025 payments were for
- Food and Beverage$3,038 · 125 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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