Mark Ratain
Hematology & Oncology · Chicago, ILNPI 1255494779
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $21,550 of the $21,550 with a category attached, or 100.0%. 3 manufacturers reported payments, led by Boehringer Ingelheim RCV GmbH & Co KG at 51.3% of the total. 2024 is the largest year on record at $11,050, 4.9 times the $2,275 reported in 2020.
Across 3 payments — averaging $7183.33 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boehringer Ingelheim RCV GmbH & Co KG$11K
- EMD Serono, Inc.$8K
- Aptevo Therapeutics Inc$2K
Across 53 payments — averaging $13,332 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.
- AbbVie$422K
- E.r. Squibb & Sons, L.L.C.$246K
- Genentech, Inc.$20K
- Incyte Corporation$19K
What the payments were for
- Consulting fees$21,550100%
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 |
|---|---|---|
| Boehringer Ingelheim RCV GmbH & Co KG | 1 | $11,050 |
| EMD Serono, Inc. | 1 | $8,225 |
| Aptevo Therapeutics Inc | 1 | $2,275 |
How this compares
$21,550 in reported general payments places this provider in the 80th percentile of 580 hematology & 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.
Other hematology & oncology in Chicago
- Michael BishopChicago$974K
- Jamile ShammoChicago$910K
- Young Kwang ChaeChicago$563K
- Irfan MirzaChicago$544K
- Marina GarassinoChicago$397K
- Chih-Yi LiaoChicago$317K
- Rita NandaChicago$286K
- Shuo MaChicago$280K
- Santosh SarafChicago$275K
- Peter RiedellChicago$273K
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.