Chandra Hassan, MD
Surgery · Chicago, ILNPI 1508031824
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (48.1%), travel and lodging and education — rather than concentrated in one kind of arrangement. Medtronic accounts for 70.6% of it on its own, with 10 other manufacturers making up the rest. Reporting peaked in 2022 at $44,467 and has fallen 95.9% since, to $1,803 in 2025. Among surgery clinicians in IL with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 121 payments — averaging $841.79 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$72K
- Intuitive Surgical$26K
- Stryker$2K
- W. L. Gore & Associates, Inc.$1K
- Covidien LP$698
- Conmed Corporation$221
- plus $510 from 5 others
What the payments were for
- Speaking & faculty fees$49,00048%
- Travel & lodging$25,27925%
- Food & beverage$5,5775%
- Education$22,00022%
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 |
|---|---|---|
| Medtronic | 43 | $71,880 |
| Intuitive Surgical | 30 | $25,783 |
| Stryker | 9 | $1,673 |
| W. L. Gore & Associates, Inc. | 14 | $1,091 |
| Covidien LP | 14 | $698 |
| Conmed Corporation | 3 | $221 |
| Baxter Healthcare | 3 | $133 |
| Teleflex LLC | 1 | $123 |
| Johnson & Johnson | 2 | $115 |
| Kerecis Limited | 1 | $114 |
| Enterra Medical, Inc. | 1 | $24 |
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
$101,856 in reported general payments places this provider in the 95th percentile of 1,180 surgery 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 surgery in Chicago
- Francesco BiancoChicago$1M
- Mark KeldahlChicago$765K
- Rami LutfiChicago$411K
- Jonah StulbergChicago$209K
- Julie DunderdaleChicago$205K
- Shabirhusain AbadinChicago$153K
- Richard ZhuChicago$128K
- Eric HungnessChicago$126K
- Kyle MuellerChicago$117K
- Benjamin JohnsonChicago$115K
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.