Mareena Susan Zachariah, MD
NPI 1629087192ActiveIndividual· Internal Medicine, Nephrology· Lubbock, TX
Internal Medicine, Nephrology (MD) with Texas Tech University Health Sciences Center Lubbock, practicing in Lubbock, Texas. 226 Medicare patients in 2024, $105,635 paid; nearly all of their 877 Part D prescriptions were generic (92%). Akebia Therapeutics Inc was the largest of 7 companies reporting payments in 2025, $550.51 in all, mostly food and beverage. Lists University Medical Center as a hospital affiliation.
Overview
| NPI | 1629087192 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 5, 2006 |
| Last updated in NPPES | Oct 15, 2026 |
| Certified by provider | Oct 15, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | R5342 | TX |
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 - Nephrology (MI); Practitioner - Nephrology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 226 |
|---|---|
| Services billed | 885 across 18 procedure codes |
| Paid by Medicare | $105,635 |
Part D prescriptions in 2024
| Prescriptions (claims) | 877 · 1,661 30-day fills |
|---|---|
| Patients | 124 |
| Total drug cost | $131,023 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1993 |
|---|---|
| Medicare specialty | Nephrology |
Medical group
- Texas Tech University Health Sciences Center LubbockLubbock, TX · 359 clinicians
Hospital affiliation
- University Medical CenterLubbock, TX
Other facilities
- Fkc Northeast LubbockDialysis facility · Lubbock, TX
- Fresenius Medical Care LubbockDialysis facility · Lubbock, TX
- Lubbock Dialysis Center-RedbudDialysis facility · Lubbock, TX
Industry payments (Open Payments)
- 2025$550.51 · 8 payments from 7 companies
- 2024$559.66 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Akebia Therapeutics Inc | $154.67 | 2 |
| Aurinia Pharma U.S., Inc. | $120.56 | 1 |
| Calliditas Therapeutics US Inc. | $100.70 | 1 |
| Vantive US Healthcare LLC | $93.21 | 1 |
| Nxstage Medical, Inc. | $33.93 | 1 |
What the 2025 payments were for
- Food and Beverage$550.51 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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