Hanhsing Irene Wu, MD
NPI 1114034832ActiveIndividual· Internal Medicine, Hematology & Oncology· Mountain View, CA
Internal Medicine, Hematology & Oncology (MD) in Mountain View, California, trained at Yale University School of Medicine (class of 1996). In 2024 Medicare paid $4,896,468 for 864 patients, and Part D covered 1,015 of their prescriptions, 84% of them generic. Merck Sharp & Dohme LLC was the largest of 10 companies reporting payments in 2025, $279.49 in all, mostly food and beverage.
Overview
| NPI | 1114034832 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 25, 2006 |
| Last updated in NPPES | Feb 27, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A63128 | CA |
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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 864 |
|---|---|
| Services billed | 229,898 across 154 procedure codes |
| Paid by Medicare | $4,896,468 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,015 · 2,208 30-day fills |
|---|---|
| Patients | 215 |
| Total drug cost | $1,707,429 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Yale University School of Medicine |
|---|---|
| Graduation year | 1996 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Medical Oncology |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliations
- El Camino HealthMountain View, CA
- Santa Monica - UCLA Med Ctr & Orthopaedic HospitalSanta Monica, CA
Industry payments (Open Payments)
- 2025$279.49 · 11 payments from 10 companies
- 2024$31.41 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $62.83 | 2 |
| E.R. Squibb & Sons, L.L.C. | $32.29 | 1 |
| Genentech USA, Inc. | $30.22 | 1 |
| Abbvie Inc. | $28.79 | 1 |
| Incyte Corporation | $26.81 | 1 |
What the 2025 payments were for
- Food and Beverage$263.49 · 10 payments
- Education$16.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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