Chunnan Liu, MD
NPI 1154409720ActiveIndividual· Internal Medicine, Hematology & Oncology· Walnut Creek, CA
Internal Medicine, Hematology & Oncology (MD) with Permanente Medical Group Inc, practicing in Walnut Creek, California. Part D covered 1,001 prescriptions written in 2024, 77% of them generic.
Overview
| NPI | 1154409720 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 1, 2006 |
| Last updated in NPPES | Dec 9, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A80860 | 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 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 (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 1,001 · 1,935 30-day fills |
|---|---|
| Patients | 271 |
| Total drug cost | $3,813,814 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Hematology/Oncology |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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