Mamie Annexy Lopez, MD
NPI 1497894505ActiveIndividual· Internal Medicine, Gastroenterology· Manati, PR
Internal Medicine, Gastroenterology (MD) in Manati, Puerto Rico, trained at University of Puerto Rico School of Medicine (class of 1986). Their prescriptions cost Medicare Part D more than their services did: $94,301 for 1,363 claims, against $6,116 paid for services in 2024.
Overview
| NPI | 1497894505 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 5, 2007 |
| Last updated in NPPES | Jan 25, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 9979 | 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 - Internal Medicine (PR) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 22 |
|---|---|
| Services billed | 65 across 5 procedure codes |
| Paid by Medicare | $6,116 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,363 · 1,481 30-day fills |
|---|---|
| Patients | 348 |
| Total drug cost | $94,301 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of Puerto Rico School of Medicine |
|---|---|
| Graduation year | 1986 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Gastroenterology |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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