Marissa Anderson, MD
Colon & Rectal Surgery · Chicago, ILNPI 1043539836
Payments from drug & device makers
What this record shows
19 manufacturers reported payments, led by Intuitive Surgical at 35.7% of the total. Reporting peaked in 2019 at $1,910 and has fallen 92.1% since, to $151 in 2025.
Across 53 payments — averaging $83.95 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$2K
- Stryker$843
- Medtronic$487
- Baxter Healthcare$381
- Conmed Corporation$217
- Axonics, Inc.$165
- plus $766 from 13 others
What the payments were for
- Travel & lodging$2,11848%
- Food & beverage$2,33152%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Intuitive Surgical | 12 | $1,590 |
| Stryker | 3 | $843 |
| Medtronic | 8 | $487 |
| Baxter Healthcare | 4 | $381 |
| Conmed Corporation | 4 | $217 |
| Axonics, Inc. | 5 | $165 |
| Covidien LP | 1 | $157 |
| AbbVie(2 entities) | 3 | $150 |
| Pacira Pharmaceuticals Incorporated | 1 | $119 |
| Innovation Technologies Inc | 1 | $77 |
| Johnson & Johnson | 3 | $73 |
| THD America, Inc. | 1 | $54 |
| Prescient Surgical | 1 | $29 |
| TELA Bio, Inc. | 1 | $26 |
| Davol Inc. | 1 | $23 |
| La Jolla Pharmaceutical Company | 1 | $17 |
| Ferring Pharmaceuticals Inc. | 1 | $15 |
| Convatec Inc. | 1 | $14 |
| Boston Scientific | 1 | $13 |
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.
- Da Vinci Surgical System$1,409
- 1588 HD 3 CHIP CAMERA$748
- PerClot$214
- Signet$143
- EXPAREL$119
- AIRSEAL$111
- INTERSTIM$108
- Signia$106
- Skyrizi$100
How this compares
$4,449 in reported general payments places this provider in the 55th percentile of 79 colon & rectal 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.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| Sod Sulf-Potass Sulf-Mag SulfSodium, Potassium,mag Sulfates | 22 | $1,443 |
| Hydrocortisone | 17 | $290 |
| Neomycin Sulfate | 24 | $70 |
| Metronidazole | 24 | $23 |
| Prochlorperazine Maleate | 15 | $12 |
Paid to pharmacies, not to this prescriber.
Other colon & rectal surgery in Chicago
- Marc SingerChicago$201K
- Francisco QuinterosChicago$119K
- Konstantin UmanskiyChicago$30K
- Vitaliy PoylinChicago$26K
- Neil HymanChicago$20K
- Amy HalversonChicago$19K
- Gerald GanttChicago$16K
- Jacqueline HarrisonChicago$15K
- Scott StrongChicago$12K
- Steven StrykerChicago$11K
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.