Ather Zafar, M.D.
NPI 1649470592ActiveIndividual· Internal Medicine, Nephrology· Chesapeake, VA
Internal Medicine, Nephrology (M.D.) with Nephrology Associates of Tidewater Ltd, practicing in Chesapeake, Virginia. Their prescriptions cost Medicare Part D more than their services did: $278,565 for 1,439 claims, against $179,495 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 12 companies reporting payments in 2025, $731.70 in all, mostly food and beverage. Lists Bon Secours Maryview Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1649470592 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 19, 2007 |
| Last updated in NPPES | Feb 16, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 0101241924 | VA |
| Internal Medicine | 207R00000X | 0101241924 | VA |
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 (VA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 479 |
|---|---|
| Services billed | 1,991 across 25 procedure codes |
| Paid by Medicare | $179,495 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,439 · 2,715 30-day fills |
|---|---|
| Patients | 228 |
| Total drug cost | $278,565 |
| Generic share | 80% of claims |
Education and affiliations
| Graduation year | 1997 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
Medical group
- Nephrology Associates of Tidewater LtdSuffolk, VA · 24 clinicians
Hospital affiliations
- Bon Secours Maryview Medical CenterPortsmouth, VA
- Chesapeake General HospitalChesapeake, VA
- Sentara Leigh HospitalNorfolk, VA
- Sentara Obici HospitalSuffolk, VA
- Sentara Princess Anne HospitalVirginia Beach, VA
Other facilities
- Dominion Dialysis CenterDialysis facility · Chesapeake, VA
Industry payments (Open Payments)
- 2025$731.70 · 52 payments from 12 companies
- 2024$536.83 · 37 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $299.68 | 17 |
| Travere Therapeutics, Inc. | $68.16 | 20 |
| Ardelyx, Inc. | $62.78 | 3 |
| Genentech USA, Inc. | $50.01 | 2 |
| Akebia Therapeutics Inc | $48.75 | 2 |
What the 2025 payments were for
- Food and Beverage$687.68 · 33 payments
- Education$44.02 · 19 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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