Joseph Kash, MD
NPI 1043297971ActiveIndividual· Internal Medicine, Hematology & Oncology· Naperville, IL
Internal Medicine, Hematology & Oncology (MD) in Naperville, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $4,428,595 for 2,142 claims, against $89,304 paid for services in 2024. Pfizer Inc. was the largest of 17 companies reporting payments in 2025, $887.54 in all, mostly food and beverage.
Overview
| NPI | 1043297971 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 30, 2005 |
| Last updated in NPPES | Apr 2, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 36091682 | IL |
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 (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 385 |
|---|---|
| Services billed | 1,057 across 16 procedure codes |
| Paid by Medicare | $89,304 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,142 · 3,684 30-day fills |
|---|---|
| Patients | 314 |
| Total drug cost | $4,428,595 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Endeavor Health Medical GroupEvanston, IL · 3,350 clinicians
Hospital affiliations
- Edward HospitalNaperville, IL
- Elmhurst Memorial HospitalElmhurst, IL
- Swedish HospitalChicago, IL
Other facilities
- Residential Home HealthHome health agency · Lisle, IL
Industry payments (Open Payments)
- 2025$887.54 · 36 payments from 17 companies
- 2024$558.63 · 24 payments from 13 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $133.32 | 6 |
| Astrazeneca Pharmaceuticals LP | $113.06 | 5 |
| Merck Sharp & Dohme LLC | $85.76 | 4 |
| Novartis Pharmaceuticals Corporation | $80.68 | 3 |
| Janssen Biotech, Inc. | $59.89 | 2 |
What the 2025 payments were for
- Food and Beverage$864.44 · 35 payments
- Education$23.10 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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