Cristy Gianna Martinez-Lopez, MD
NPI 1023262110ActiveIndividual· Internal Medicine, Nephrology· San Juan, PR
Internal Medicine, Nephrology (MD) in San Juan, Puerto Rico, licensed in PR, with an NPI issued in November 2008. Their prescriptions cost Medicare Part D more than their services did: $428,653 for 2,181 claims, against $16,244 paid for services in 2024. Vifor Pharma, Inc. reported $30.00 in payments in 2025, mostly food and beverage. Lists Doctors' Center Bayamon as a hospital affiliation.
Overview
| NPI | 1023262110 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 17, 2008 |
| Last updated in NPPES | Mar 16, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 18728 | PR |
| Student in an Organized Health Care Education/Training Program | 390200000X | 27,235-R | 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) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 19 |
|---|---|
| Services billed | 109 across 9 procedure codes |
| Paid by Medicare | $16,244 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,181 · 3,761 30-day fills |
|---|---|
| Patients | 181 |
| Total drug cost | $428,653 |
| Generic share | 76% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Nephrology |
Hospital affiliation
- Doctors' Center BayamonBayamon, PR
Industry payments (Open Payments)
- 2025$30.00 · 1 payment from 1 company
- 2024$317.86 · 10 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vifor Pharma, Inc. | $30.00 | 1 |
What the 2025 payments were for
- Food and Beverage$30.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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