Grace K. Dy, MD
NPI 1639143795ActiveIndividual· Internal Medicine, Hematology & Oncology· Buffalo, NY
Internal Medicine, Hematology & Oncology (MD) with Roswell Park Cancer Institute, practicing in Buffalo, New York. Their prescriptions cost Medicare Part D more than their services did: $692,590 for 193 claims, against $20,535 paid for services in 2024. Aadi Bioscience, Inc. was the largest of 5 companies reporting payments in 2025, $10,510 in all, mostly consulting fees.
Overview
| NPI | 1639143795 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 15, 2006 |
| Last updated in NPPES | Feb 16, 2021 |
| Certified by provider | Feb 16, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 002956 | 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 - Hematology/Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 85 |
|---|---|
| Services billed | 251 across 11 procedure codes |
| Paid by Medicare | $20,535 |
Part D prescriptions in 2024
| Prescriptions (claims) | 193 · 216 30-day fills |
|---|---|
| Patients | 74 |
| Total drug cost | $692,590 |
| Generic share | 72% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Medical group
- Roswell Park Cancer InstituteBuffalo, NY · 488 clinicians
Other facilities
- Vna of Western Ny ChhaHome health agency · Cheektowaga, NY
Industry payments (Open Payments)
- 2025$10,510 · 7 payments from 5 companies
- 2024$23,406 · 17 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Aadi Bioscience, Inc. | $6,250 | 3 |
| Astrazeneca Pharmaceuticals LP | $2,050 | 1 |
| E.R. Squibb & Sons, L.L.C. | $1,480 | 1 |
| Taiho Oncology, Inc. | $700.00 | 1 |
| Mirati Therapeutics, Inc. | $30.00 | 1 |
What the 2025 payments were for
- Consulting Fee$9,780 · 5 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$700.00 · 1 payment
- Food and Beverage$30.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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