Warren C. Wong, M.D.
NPI 1881749240ActiveIndividual· Internal Medicine, Hematology & Oncology· Hinsdale, IL
Internal Medicine, Hematology & Oncology (M.D.) in Hinsdale, Illinois, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $2,979,241 for 755 claims, against $117,457 paid for services in 2024. Celgene Corporation was the largest of 9 companies reporting payments in 2025, $273.15 in all, mostly food and beverage.
Overview
| NPI | 1881749240 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 24, 2007 |
| Last updated in NPPES | Aug 31, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 036084387 | 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 | 434 |
|---|---|
| Services billed | 2,032 across 13 procedure codes |
| Paid by Medicare | $117,457 |
Part D prescriptions in 2024
| Prescriptions (claims) | 755 · 1,276 30-day fills |
|---|---|
| Patients | 151 |
| Total drug cost | $2,979,241 |
| Generic share | 57% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Hematology/Oncology |
Medical group
- Ahp Specialty Care NfpHinsdale, IL · 31 clinicians
Hospital affiliations
- Northwestern Medicine Central Dupage HospitalWinfield, IL
- Uchicago Medicine Adventhealth BolingbrookBolingbrook, IL
- Uchicago Medicine Adventhealth HinsdaleHinsdale, IL
- Uchicago Medicine Adventhealth la GrangeLa Grange, IL
Industry payments (Open Payments)
- 2025$273.15 · 12 payments from 9 companies
- 2024$344.04 · 16 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Celgene Corporation | $49.40 | 2 |
| Incyte Corporation | $47.13 | 2 |
| Jazz Pharmaceuticals Inc. | $41.49 | 2 |
| Daiichi Sankyo Inc. | $28.73 | 1 |
| Novartis Pharmaceuticals Corporation | $24.20 | 1 |
What the 2025 payments were for
- Food and Beverage$273.15 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 18 hematologist-oncologists in Hinsdale · All hematologist-oncologists in Illinois