Jeffrey Rotwein Zweig, MD
NPI 1053600312ActiveIndividual· Internal Medicine, Hematology & Oncology· Pleasant Hill, CA
Internal Medicine, Hematology & Oncology (MD) in Pleasant Hill, California, trained at Stanford University School of Medicine (class of 2018). Their prescriptions cost Medicare Part D more than their services did: $4,439,734 for 1,355 claims, against $68,457 paid for services in 2024. Tempus Ai, Inc reported $75.00 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1053600312 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 7, 2011 |
| Last updated in NPPES | Dec 17, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A136852 | CA |
| Hospitalist | 208M00000X | MD042323 | DC |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 11 |
|---|---|
| Services billed | 1,601 across 31 procedure codes |
| Paid by Medicare | $68,457 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,355 · 2,003 30-day fills |
|---|---|
| Patients | 249 |
| Total drug cost | $4,439,734 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | Stanford University School of Medicine |
|---|---|
| Graduation year | 2018 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Industry payments (Open Payments)
- 2025$75.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Tempus Ai, Inc | $75.00 | 1 |
What the 2025 payments were for
- Food and Beverage$75.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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