Zaiyara Adorno Rivera, MD
NPI 1972985992ActiveIndividual· Internal Medicine, Nephrology· Carrollton, GA
Internal Medicine, Nephrology (MD) with Carroll County Nephrology PC, practicing in Carrollton, Georgia. Their prescriptions cost Medicare Part D more than their services did: $245,420 for 1,093 claims, against $127,741 paid for services in 2024. Ardelyx, Inc. was the largest of 12 companies reporting payments in 2025, $777.61 in all, mostly food and beverage. Lists Higgins General Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1972985992 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jun 25, 2015 |
| Last updated in NPPES | Jun 23, 2026 |
| Certified by provider | Jun 23, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 88399 | GA |
| Student in an Organized Health Care Education/Training Program | 390200000X | TRN28259 | FL |
| Internal Medicine, Nephrology | 207RN0300X | TRN28259 | FL |
| Student in an Organized Health Care Education/Training Program | 390200000X | 31790R | 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 - Nephrology (GA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 383 |
|---|---|
| Services billed | 1,292 across 25 procedure codes |
| Paid by Medicare | $127,741 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,093 · 2,200 30-day fills |
|---|---|
| Patients | 225 |
| Total drug cost | $245,420 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Carroll County Nephrology PCBremen, GA · 6 clinicians
Hospital affiliations
- Higgins General HospitalBremen, GA
- Tanner Medical Center - CarrolltonCarrollton, GA
- Tanner Medical Center Villa RicaVilla Rica, GA
- Tanner Medical Center-East AlabamaWedowee, AL
Other facilities
- Fmcna Villa RicaDialysis facility · Villa Rica, GA
- Fresenius Medical Care Carroll CountyDialysis facility · Carrollton, GA
Industry payments (Open Payments)
- 2025$777.61 · 36 payments from 12 companies
- 2024$516.24 · 26 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Ardelyx, Inc. | $146.86 | 5 |
| Amgen Inc. | $133.68 | 7 |
| Otsuka America Pharmaceutical, Inc. | $106.25 | 5 |
| Astrazeneca Pharmaceuticals LP | $81.19 | 4 |
| Calliditas Therapeutics US Inc. | $78.34 | 3 |
What the 2025 payments were for
- Food and Beverage$772.63 · 33 payments
- Education$4.98 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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