Fan Zhang, MD
NPI 1619051695ActiveIndividual· Internal Medicine, Medical Oncology· Santa Rosa, CA
Internal Medicine, Medical Oncology (MD) with Alaska Native Tribal Health Consortium and 1 other group, practicing in Santa Rosa, California. Their prescriptions cost Medicare Part D more than their services did: $899,957 for 368 claims, against $6,712 paid for services in 2024. E.R. Squibb & Sons, L.L.C. reported $80.15 in payments in 2024, mostly food and beverage. Lists Adventist Health Clearlake and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1619051695 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 25, 2006 |
| Last updated in NPPES | Mar 5, 2026 |
| Certified by provider | Mar 5, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Medical Oncology Primary | 207RX0202X | 81734 | CA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | A81734 | 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 - Medical Oncology (CA); Practitioner - Hematology/Oncology (NE); Practitioner - Hematology/Oncology (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 39 |
|---|---|
| Services billed | 1,438 across 27 procedure codes |
| Paid by Medicare | $6,712 |
Part D prescriptions in 2024
| Prescriptions (claims) | 368 · 680 30-day fills |
|---|---|
| Patients | 178 |
| Total drug cost | $899,957 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical groups
- Alaska Native Tribal Health ConsortiumAnchorage, AK · 607 clinicians
- Sutter Bay HospitalsLakeport, CA · 48 clinicians
Hospital affiliations
- Adventist Health ClearlakeClearlake, CA
- Adventist Health Ukiah ValleyUkiah, CA
- Alaska Native Medical CenterAnchorage, AK
- Great Plains HealthNorth Platte, NE
- Sutter Lakeside HospitalLakeport, CA
Industry payments (Open Payments)
- 2024$80.15 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $80.15 | 1 |
What the 2024 payments were for
- Food and Beverage$80.15 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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