Christopher Willner, DO
Hematology & Oncology · Detroit, MINPI 1881043594
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $2,076 of the $2,190 with a category attached, or 94.8%. E.r. Squibb & Sons, L.L.C. accounts for 94.8% of it on its own, with 4 other manufacturers making up the rest. Reporting peaked in 2024 at $2,076 and has fallen 96.2% since, to $80 in 2025.
Across 5 payments — averaging $438.03 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- E.r. Squibb & Sons, L.L.C.$2K
- Merck$35
- Syndax Pharmaceuticals, Inc.$33
- GSK$23
- AstraZeneca$23
Across 7 payments — averaging $2379.07 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.$17K
What the payments were for
- Consulting fees$2,07695%
- Food & beverage$924%
- Education$231%
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 |
|---|---|---|
| E.r. Squibb & Sons, L.L.C. | 1 | $2,076 |
| Merck | 1 | $35 |
| Syndax Pharmaceuticals, Inc. | 1 | $33 |
| GSK | 1 | $23 |
| AstraZeneca | 1 | $23 |
How this compares
$2,190 in reported general payments places this provider in the 55th percentile of 282 hematology & oncology providers in Michigan.
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 |
|---|---|---|
| JakafiRuxolitinib Phosphate | 26 | $436,817 |
| PomalystPomalidomide | 19 | $390,801 |
| CalquenceAcalabrutinib Maleate | 22 | $319,421 |
| RevlimidLenalidomide | 12 | $206,184 |
| EliquisApixaban | 55 | $53,616 |
| Hydroxyurea | 20 | $689 |
| Acyclovir | 19 | $306 |
| Prochlorperazine Maleate | 11 | $302 |
| Dexamethasone | 22 | $279 |
| Ondansetron OdtOndansetron | 13 | $173 |
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 |
|---|---|---|
| E.r. Squibb & Sons, L.L.C.Pomalyst | $2,076 | $390,80119 claims |
| AstraZenecaCalquence | $23 | $319,42122 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 55th percentile of 282 hematology & oncology providers in Michigan.
Other hematology & oncology in Detroit
- Mohammed Al HallakDetroit$644K
- Jeffrey ZonderDetroit$88K
- Hadeel AssadDetroit$80K
- Wasif SaifDetroit$44K
- Harsh ShahDetroit$38K
- Hirva MamdaniDetroit$28K
- Abhinav DeolDetroit$18K
- Lawrence FlahertyDetroit$18K
- Susan HaroldDetroit$14K
- Anthony ShieldsDetroit$12K
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.