Omayra Reyes Santiago, M.D.
NPI 1124287313ActiveIndividual· Internal Medicine, Hematology & Oncology· Cayey, PR
Internal Medicine, Hematology & Oncology (M.D.) in Cayey, Puerto Rico, licensed in PR, with an NPI issued in June 2008. Their prescriptions cost Medicare Part D more than their services did: $4,369,480 for 1,416 claims, against $28,909 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 27 companies reporting payments in 2025, $5,971 in all, mostly food and beverage. Lists Hospital Menonita de Cayey as a hospital affiliation.
Overview
| NPI | 1124287313 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jun 3, 2008 |
| Last updated in NPPES | Jul 10, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 17646 | PR |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 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 | 23 |
|---|---|
| Services billed | 2,914 across 27 procedure codes |
| Paid by Medicare | $28,909 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,416 · 1,521 30-day fills |
|---|---|
| Patients | 199 |
| Total drug cost | $4,369,480 |
| Generic share | 69% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Hospital affiliation
- Hospital Menonita de CayeyCayey, PR
Industry payments (Open Payments)
- 2025$5,971 · 185 payments from 27 companies
- 2024$12,634 · 194 payments from 31 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $1,691 | 11 |
| Astrazeneca Pharmaceuticals LP | $736.21 | 27 |
| E.R. Squibb & Sons, L.L.C. | $479.41 | 20 |
| Pbg Puerto Rico LLC | $449.58 | 19 |
| Janssen Pharmaceuticals, Inc | $403.78 | 17 |
What the 2025 payments were for
- Food and Beverage$4,511 · 184 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$1,460 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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