Winnie S. Su, MD
NPI 1386900322ActiveIndividual· Internal Medicine, Nephrology· Amherst, NY
Internal Medicine, Nephrology (MD) with Nephrology Associates of Western New York, LLP, practicing in Amherst, New York. Their prescriptions cost Medicare Part D more than their services did: $427,182 for 2,213 claims, against $93,963 paid for services in 2024. Otsuka America Pharmaceutical, Inc. was the largest of 2 companies reporting payments in 2025, $154.43 in all, mostly food and beverage. Lists Brooks-Tlc Hospital System, Inc and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1386900322 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 4, 2012 |
| Last updated in NPPES | May 11, 2020 |
| Certified by provider | May 11, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Nephrology Primary | 207RN0300X | 003983 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 245 |
|---|---|
| Services billed | 1,264 across 26 procedure codes |
| Paid by Medicare | $93,963 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,213 · 4,100 30-day fills |
|---|---|
| Patients | 307 |
| Total drug cost | $427,182 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Nephrology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Nephrology Associates of Western New York, LLPAmherst, NY · 15 clinicians
Hospital affiliations
- Brooks-Tlc Hospital System, IncDunkirk, NY
- Kaleida HealthBuffalo, NY
- Kenmore Mercy HospitalKenmore, NY
- Mercy Hospital of BuffaloBuffalo, NY
- Sisters of Charity HospitalBuffalo, NY
Other facilities
- Davita Cleve Hill Dialysis CenterDialysis facility · Amherst, NY
- Davita Dunkirk DialysisDialysis facility · Dunkirk, NY
- Davita Northtowns Dialysis CenterDialysis facility · Tonawanda, NY
- Davita Suburban DialysisDialysis facility · Amherst, NY
Industry payments (Open Payments)
- 2025$154.43 · 17 payments from 2 companies
- 2024$198.40 · 20 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | $124.99 | 1 |
| Travere Therapeutics, Inc. | $29.44 | 16 |
What the 2025 payments were for
- Food and Beverage$124.99 · 1 payment
- Education$29.44 · 16 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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