Madan Kumar
Pediatric Infectious Diseases · Chicago, ILNPI 1699032516
Payments from drug & device makers
What this record shows
The money is spread across several categories — travel and lodging (59.4%), food and beverage and consulting fees — rather than concentrated in one kind of arrangement. 4 manufacturers reported payments, led by Merck at 46.6% of the total. Reporting peaked in 2023 at $2,738 and has fallen 96.7% since, to $90 in 2024.
Across 35 payments — averaging $159.38 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Merck$3K
- Astrazeneca UK Limited$2K
- Astellas Pharma US Inc$1K
- Takeda Pharmaceuticals U.S.A., Inc.$83
Across 112 payments — averaging $3120.10 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.
- Pfizer$214K
- Hoffmann-la Roche Limited$49K
- Merck$45K
- Astrazeneca UK Limited$17K
- Astellas US Technologies$17K
- Astellas Pharma Global Development$7K
What the payments were for
- Consulting fees$1,00018%
- Travel & lodging$3,31359%
- Food & beverage$1,10520%
- Education$1603%
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 |
|---|---|---|
| Merck | 20 | $2,597 |
| Astrazeneca UK Limited | 9 | $1,545 |
| Astellas Pharma US Inc | 5 | $1,353 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $83 |
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
$5,578 in reported general payments places this provider in the 75th percentile of 29 pediatric infectious diseases providers in Illinois.
See all pediatric infectious diseases providers in Illinois →
Other pediatric infectious diseases in Chicago
- Tina TanChicago$172K
- Ben KatzChicago$113K
- Ram YogevChicago$99K
- Ravi JhaveriChicago$73K
- William MullerChicago$57K
- David NguyenChicago$18K
- Stanford ShulmanChicago$10K
- Colleen NashChicago$400
- Julia RosebushChicago$309
- Silvana CarrChicago$298
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.