Efrain M. Flores De Hostos, MD
NPI 1083710164ActiveIndividual· Internal Medicine, Nephrology· Mayaguez, PR
Internal Medicine, Nephrology (MD) in Mayaguez, Puerto Rico, licensed in PR, with an NPI issued in September 2006. Part D covered 453 prescriptions written in 2024, 83% of them generic. Apellis Pharmaceuticals, Inc. was the largest of 2 companies reporting payments in 2025, $150.16 in all, mostly food and beverage.
Overview
| NPI | 1083710164 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 15, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 6559 | 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) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 453 · 681 30-day fills |
|---|---|
| Patients | 29 |
| Total drug cost | $88,596 |
| Generic share | 83% of claims |
Industry payments (Open Payments)
- 2025$150.16 · 2 payments from 2 companies
- 2024$333.98 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Apellis Pharmaceuticals, Inc. | $125.00 | 1 |
| Bayer Puerto Rico Inc. | $25.16 | 1 |
What the 2025 payments were for
- Food and Beverage$150.16 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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