William Gradishar, MD
Medical Oncology · Chicago, ILNPI 1437187929
Payments from drug & device makers
Across 325 payments — averaging $10,273 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Seagen Inc.$1.5M
- Merck$446K
- Genentech, Inc.$232K
- Eli Lilly$192K
- Novartis$170K
- E.r. Squibb & Sons, L.L.C.$156K
- plus $667K from 27 others
Across 17 payments — averaging $3393.81 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- Stemline Therapeutics Inc.$28K
- Eli Lilly$10K
- Genentech, Inc.$9K
- Tolmar, Inc.$4K
- F. Hoffmann-la Roche AG$3K
- Novartis$2K
- plus $2K from 1 others
What the payments were for
- Consulting fees$253,73088%
- Speaking & faculty fees$19,3297%
- Travel & lodging$9,4133%
- Food & beverage$6,0842%
- Education$120%
General payments by program year
Who reported the general payments
Companies are grouped under their corporate parent — a single manufacturer often files under several CMS reporting entities. Research and ownership payments are counted separately and are not in this table.
| Company | Payments | Total |
|---|---|---|
| Seagen Inc. | 18 | $1,475,585 |
| Merck | 12 | $445,560 |
| Genentech, Inc. | 26 | $232,383 |
| Eli Lilly | 20 | $192,458 |
| Novartis | 21 | $169,901 |
| E.r. Squibb & Sons, L.L.C. | 21 | $156,013 |
| Daiichi Sankyo Company LTD | 6 | $108,948 |
| EMD Serono, Inc. | 2 | $85,552 |
| AstraZeneca | 60 | $83,397 |
| Daiichi Sankyo Inc. | 25 | $82,829 |
| GSK | 3 | $80,655 |
| Macrogenics, Inc. | 8 | $73,714 |
| AbbVie | 8 | $36,348 |
| Genentech USA, Inc. | 21 | $28,778 |
| Pfizer(2 entities) | 18 | $19,822 |
| Stemline Therapeutics Inc. | 14 | $14,782 |
| Gilead | 9 | $9,316 |
| Astrazeneca UK Limited | 9 | $7,423 |
| Puma Biotechnology, Inc. | 3 | $5,993 |
| Lilly USA, LLC | 2 | $4,050 |
| GE HealthCare | 1 | $3,738 |
| Jazz Pharmaceuticals Inc. | 1 | $3,000 |
| F. Hoffmann-la Roche AG | 1 | $2,870 |
| Samsung Bioepis Co., Ltd. | 3 | $2,550 |
| Tersera Therapeutics LLC | 1 | $2,377 |
| Blueprint Medicines Corporation | 1 | $1,850 |
| Tolmar, Inc. | 1 | $1,800 |
| Foundation Medicine, Inc. | 1 | $1,750 |
| Athenex Pharmaceutical Division, LLC | 3 | $1,500 |
| Immunomedics, Inc. | 1 | $1,375 |
| Janssen Research & Development, LLC | 3 | $1,292 |
| Sanofi | 1 | $1,177 |
| Biontech SE | 1 | $79 |
What the payments were tied to
Products named in the reported payments. Only payments of $100 or more are attributed here — the typical reported payment nationally is a meal worth about $16, and listing those product-by-product would be noise.
How this compares
$3,338,866 in reported general payments places this provider in the 95th percentile of 144 medical oncology providers in Illinois.
Medicare billing
What this is not: this is the amount Original Medicare Part B allowed for services this provider billed in 2024. It is not their income. It excludes Medicare Advantage — now more than half of all Medicare enrollment — along with Medicaid and all commercial insurance, and it is gross practice revenue before staff, rent, supplies and malpractice premiums. CMS also suppresses any figure covering ten or fewer patients, so low-volume providers appear smaller than they are.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| IbrancePalbociclib | 51 | $780,696 |
| KisqaliRibociclib Succinate | 35 | $557,836 |
| TruqapCapivasertib | 24 | $400,957 |
| OrserduElacestrant Hcl | 12 | $266,718 |
| VerzenioAbemaciclib | 16 | $234,959 |
| Exemestane | 46 | $9,649 |
| Anastrozole | 300 | $6,967 |
| Letrozole | 49 | $1,296 |
| Tamoxifen Citrate | 51 | $1,217 |
| Dexamethasone | 12 | $202 |
| Prochlorperazine Maleate | 16 | $95 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| PfizerIbrance | $19,822 | $780,69651 claims |
| NovartisKisqali | $169,901 | $557,83635 claims |
| AstraZenecaTruqap | $83,397 | $400,95724 claims |
| Stemline Therapeutics Inc.Orserdu | $14,782 | $266,71812 claims |
| Lilly USA, LLCVerzenio | $4,050 | $234,95916 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 95th percentile of 144 medical oncology providers in Illinois.
Other medical oncology in Chicago
- Andrzej JakubowiakChicago$42M
- Alexander PearsonChicago$9.3M
- Jyoti PatelChicago$7.5M
- Devalingam MahalingamChicago$7.1M
- Ardaman ShergillChicago$4.9M
- Sunandana ChandraChicago$4.6M
- Manali BhaveChicago$3.3M
- Eugene AhnChicago$2.8M
- Nisha MohindraChicago$2.4M
- Jeffrey SosmanChicago$2.3M
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Billing: Medicare Physician & Other Practitioners, data year 2024. Original Medicare Part B only.
- Identity: NPPES NPI Registry, July 2026.