Nader A. Kashani, MD
NPI 1285793893ActiveIndividual· Internal Medicine, Hematology & Oncology· Irvine, CA
Internal Medicine, Hematology & Oncology (MD) in Irvine, California, trained at Medical College of Wisconsin (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $253,274 for 144 claims, against $16,502 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 10 companies reporting payments in 2025, $371.31 in all, mostly food and beverage.
Overview
| NPI | 1285793893 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 8, 2006 |
| Last updated in NPPES | Apr 29, 2025 |
| Certified by provider | Apr 29, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G66680 | CA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | MD-23891 | HI |
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 - Internal Medicine (CA); Practitioner - Hematology/Oncology (HI); Practitioner - Internal Medicine (TX) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 126 |
|---|---|
| Services billed | 196 across 10 procedure codes |
| Paid by Medicare | $16,502 |
Part D prescriptions in 2024
| Prescriptions (claims) | 144 · 170 30-day fills |
|---|---|
| Patients | 72 |
| Total drug cost | $253,274 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Hematology/Oncology |
| Telehealth | Offers telehealth |
Medical group
- Hilo Benioff Medical CenterHilo, HI · 129 clinicians
Hospital affiliations
- Hilo Benioff Medical CenterHilo, HI
- Kau HospitalPahala, HI
Industry payments (Open Payments)
- 2025$371.31 · 12 payments from 10 companies
- 2024$411.08 · 20 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $113.42 | 2 |
| Aveo Pharmaceuticals, Inc. | $91.99 | 1 |
| Coherus Oncology, Inc. | $29.80 | 1 |
| Pfizer Inc. | $28.10 | 2 |
| Daiichi Sankyo Inc. | $23.75 | 1 |
What the 2025 payments were for
- Food and Beverage$279.32 · 11 payments
- Education$91.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Hematology & Oncology providers in Irvine
- 1043400286
- 1447587050
- 1205093028
- 1124681515
- 1194251710
- 1902324528
- 1144583733
- 1477729861
- 1477117653
- 1376802843
- 1043415961
- 1821032129
All Internal Medicine, Hematology & Oncology providers in California →