Denise Ythier, P.A.
NPI 1023018702ActiveIndividual· Physician Assistant· White Plains, NY
Physician Assistant (P.A.) with Westchester Medical Center Advanced Physician Services PC, practicing in White Plains, New York. Their prescriptions cost Medicare Part D more than their services did: $491,731 for 318 claims, against $2,974 paid for services in 2024. Abbvie Inc. was the largest of 4 companies reporting payments in 2025, $371.15 in all, mostly food and beverage. Lists Westchester Medical Center as a hospital affiliation.
Overview
| NPI | 1023018702 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | P.A. |
| Sole proprietor | No |
| NPI issued | Jul 26, 2005 |
| Last updated in NPPES | Dec 10, 2021 |
| Certified by provider | Dec 10, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 003280 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 12 |
|---|---|
| Services billed | 13 across 5 procedure codes |
| Paid by Medicare | $2,974 |
Part D prescriptions in 2024
| Prescriptions (claims) | 318 · 426 30-day fills |
|---|---|
| Patients | 155 |
| Total drug cost | $491,731 |
| Generic share | 64% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Westchester Medical Center Advanced Physician Services PCValhalla, NY · 897 clinicians
Hospital affiliation
- Westchester Medical CenterValhalla, NY
Industry payments (Open Payments)
- 2025$371.15 · 8 payments from 4 companies
- 2024$155.57 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $288.14 | 4 |
| Takeda Pharmaceuticals U.S.A., Inc. | $41.04 | 2 |
| Madrigal Pharmaceuticals | $21.06 | 1 |
| Ardelyx, Inc. | $20.91 | 1 |
What the 2025 payments were for
- Food and Beverage$371.15 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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