Eric Chau-Yong Ku, MD
NPI 1013478999ActiveIndividual· Radiology, Radiation Oncology· Modesto, CA
Radiology, Radiation Oncology (MD) in Modesto, California, trained at F H Netter, M.D. School of Med at Quinnipiac Univ (class of 2019). 66 Medicare patients in 2024, $33,524 paid; nearly all of their 65 Part D prescriptions were generic (97%). Siemens Medical Solutions USA, Inc. was the largest of 2 companies reporting payments in 2025, $215.36 in all, mostly food and beverage.
Overview
| NPI | 1013478999 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 25, 2019 |
| Last updated in NPPES | Feb 12, 2025 |
| Certified by provider | Feb 12, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | A182542 | CA |
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 - Radiation Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 66 |
|---|---|
| Services billed | 557 across 26 procedure codes |
| Paid by Medicare | $33,524 |
Part D prescriptions in 2024
| Prescriptions (claims) | 65 · 65 30-day fills |
|---|---|
| Patients | 31 |
| Total drug cost | $685.92 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | F H Netter, M.D. School of Med at Quinnipiac Univ |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Radiation Oncology |
| Telehealth | Offers telehealth |
Medical group
- Sutter Valley Medical FoundationModesto, CA · 2,500 clinicians
Hospital affiliations
- Memorial Medical CenterModesto, CA
- Sutter Tracy Community HospitalTracy, CA
Industry payments (Open Payments)
- 2025$215.36 · 3 payments from 2 companies
- 2024$1,127 · 6 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Siemens Medical Solutions USA, Inc. | $174.33 | 1 |
| Teleflex LLC | $41.03 | 2 |
What the 2025 payments were for
- Food and Beverage$215.36 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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