Katharine Sapienza, PA-C
NPI 1326757568ActiveIndividual· Physician Assistant· Riverhead, NY
Physician Assistant (PA-C) with University Associates in Obstetrics and Gynecology University Faculty, practicing in Riverhead, New York. Their prescriptions cost Medicare Part D more than their services did: $101,861 for 589 claims, against $54,047 paid for services in 2024. Biogen, Inc. was the largest of 12 companies reporting payments in 2025, $595.66 in all, mostly food and beverage. Lists John T Mather Memorial Hospital of Port Jefferson and 1 other hospital as hospital affiliations.
Overview
| NPI | 1326757568 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Nov 16, 2022 |
| Last updated in NPPES | Dec 11, 2022 |
| Certified by provider | Dec 11, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | 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 | 207 |
|---|---|
| Services billed | 2,284 across 13 procedure codes |
| Paid by Medicare | $54,047 |
Part D prescriptions in 2024
| Prescriptions (claims) | 589 · 1,181 30-day fills |
|---|---|
| Patients | 294 |
| Total drug cost | $101,861 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- University Associates in Obstetrics and Gynecology University FacultyStony Brook, NY · 112 clinicians
Hospital affiliations
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY
- Suny/Stony Brook University HospitalStony Brook, NY
Industry payments (Open Payments)
- 2025$595.66 · 22 payments from 12 companies
- 2024$528.07 · 17 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Biogen, Inc. | $113.67 | 1 |
| Exeltis, USA Inc. | $109.27 | 5 |
| Mayne Pharma Commercial LLC | $100.17 | 4 |
| Amgen Inc. | $53.27 | 3 |
| Organon LLC | $41.40 | 2 |
What the 2025 payments were for
- Food and Beverage$595.66 · 22 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 52 physician assistants in Riverhead · All physician assistants in New York