Derrick Wong, M.D.
NPI 1194941104ActiveIndividual· Internal Medicine, Hematology & Oncology· Mountain View, CA
Internal Medicine, Hematology & Oncology (M.D.) in Mountain View, California, trained at University of California, Geffen School of Medicine (class of 2001). Their prescriptions cost Medicare Part D more than their services did: $5,287,485 for 1,320 claims, against $3,147,609 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 4 companies reporting payments in 2025, $191.18 in all, mostly food and beverage.
Overview
| NPI | 1194941104 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 18, 2007 |
| Last updated in NPPES | Dec 2, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A82274 | 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 | 905 |
|---|---|
| Services billed | 161,982 across 134 procedure codes |
| Paid by Medicare | $3,147,609 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,320 · 2,407 30-day fills |
|---|---|
| Patients | 235 |
| Total drug cost | $5,287,485 |
| Generic share | 64% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 2001 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliation
- El Camino HealthMountain View, CA
Industry payments (Open Payments)
- 2025$191.18 · 4 payments from 4 companies
- 2024$16.68 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $124.97 | 1 |
| Abbvie Inc. | $25.60 | 1 |
| Array Biopharma Inc | $24.61 | 1 |
| Pfizer Inc. | $16.00 | 1 |
What the 2025 payments were for
- Food and Beverage$175.18 · 3 payments
- Education$16.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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