Kathryn A. Tiutiunnyk, RPA-C
NPI 1124284443ActiveIndividual· Physician Assistant, Medical· Williamsville, NY
Physician Assistant, Medical (RPA-C) with Northtowns Cardiology, PLLC, practicing in Williamsville, New York. Their prescriptions cost Medicare Part D more than their services did: $3,983,618 for 10,151 claims, against $28,970 paid for services in 2024. Alnylam Pharmaceuticals Inc. was the largest of 21 companies reporting payments in 2025, $2,394 in all, mostly food and beverage. Lists Sisters of Charity Hospital as a hospital affiliation.
Overview
| NPI | 1124284443 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | RPA-C |
| Sole proprietor | No |
| NPI issued | Aug 6, 2008 |
| Last updated in NPPES | Aug 6, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 0113331 | NY |
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 - Physician Assistant (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 362 |
|---|---|
| Services billed | 399 across 2 procedure codes |
| Paid by Medicare | $28,970 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,151 · 26,513 30-day fills |
|---|---|
| Patients | 2,335 |
| Total drug cost | $3,983,618 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2006 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Northtowns Cardiology, PLLCAmherst, NY · 10 clinicians
Hospital affiliation
- Sisters of Charity HospitalBuffalo, NY
Industry payments (Open Payments)
- 2025$2,394 · 102 payments from 21 companies
- 2024$2,318 · 100 payments from 29 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Alnylam Pharmaceuticals Inc. | $385.43 | 24 |
| Bridgebio Pharma, Inc. | $370.93 | 11 |
| Edwards Lifesciences Corporation | $251.60 | 6 |
| Astrazeneca Pharmaceuticals LP | $186.52 | 14 |
| Boston Scientific Corporation | $184.47 | 2 |
What the 2025 payments were for
- Food and Beverage$2,394 · 102 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 74 physician assistants in Williamsville · All physician assistants in New York