Yijun Cheng, M.D.
NPI 1013058213ActiveIndividual· Internal Medicine, Hematology & Oncology· Williamsville, NY
Internal Medicine, Hematology & Oncology (M.D.) with Buffalo Medical Group, P.C., practicing in Williamsville, New York. Their prescriptions cost Medicare Part D more than their services did: $4,613,500 for 1,697 claims, against $1,756,155 paid for services in 2024. Novartis Pharmaceuticals Corporation reported $75.88 in payments in 2025, mostly food and beverage. Lists Bertrand Chaffee Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1013058213 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Feb 9, 2007 |
| Last updated in NPPES | Dec 11, 2019 |
| Certified by provider | Dec 11, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 233542 | 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 - Hematology/Oncology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 489 |
|---|---|
| Services billed | 163,216 across 134 procedure codes |
| Paid by Medicare | $1,756,155 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,697 · 2,553 30-day fills |
|---|---|
| Patients | 351 |
| Total drug cost | $4,613,500 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Medical Oncology |
| Telehealth | Offers telehealth |
Medical group
- Buffalo Medical Group, P.C.Williamsville, NY · 236 clinicians
Hospital affiliations
- Bertrand Chaffee HospitalSpringville, NY
- Kaleida HealthBuffalo, NY
- Mercy Hospital of BuffaloBuffalo, NY
- Mount St. Mary's Hospital & Health CenterLewiston, NY
- Sisters of Charity HospitalBuffalo, NY
Industry payments (Open Payments)
- 2025$75.88 · 4 payments from 1 company
- 2024$69.15 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $75.88 | 4 |
What the 2025 payments were for
- Food and Beverage$75.88 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Williamsville
- 1649264029
- 1952703985
- 1114061942
- 1740091776
- 1952367252
- 1881223519
- 1366436198
- 1184285785
- 1992813828
- 1578557302
- 1942383807
- 1104347558
All Internal Medicine, Hematology & Oncology providers in New York →