Marc Singer, MD
Colon & Rectal Surgery · Chicago, ILNPI 1194732909
Payments from drug & device makers
What this record shows
The money is spread across several categories — consulting fees (59.8%), speaking fees and travel and lodging — rather than concentrated in one kind of arrangement. 25 manufacturers reported payments, led by Medical Device Business Services, Inc. at 48.8% of the total. Reporting peaked in 2019 at $61,623 and has fallen 98.5% since, to $932 in 2025. Among colon & rectal 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 247 payments — averaging $811.78 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medical Device Business Services, Inc.$98K
- Olympus Corporation$26K
- Merck$24K
- Intuitive Surgical$17K
- Takeda Pharmaceuticals U.S.A., Inc.$12K
- Pacira Pharmaceuticals Incorporated$8K
- plus $16K from 19 others
What the payments were for
- Consulting fees$119,85160%
- Speaking & faculty fees$37,72319%
- Travel & lodging$24,18112%
- Food & beverage$7,9704%
- Education$10,7855%
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 |
|---|---|---|
| Medical Device Business Services, Inc. | 97 | $97,827 |
| Olympus Corporation | 18 | $25,530 |
| Merck | 32 | $23,758 |
| Intuitive Surgical | 21 | $17,470 |
| Takeda Pharmaceuticals U.S.A., Inc. | 7 | $11,829 |
| Pacira Pharmaceuticals Incorporated | 11 | $8,206 |
| Johnson & Johnson(2 entities) | 18 | $4,463 |
| Acelrx Pharmaceuticals, Inc. | 4 | $3,017 |
| Olympus America Inc. | 5 | $2,401 |
| Nestle Healthcare Nutrition Inc. | 3 | $2,400 |
| AbbVie | 1 | $750 |
| Davol Inc. | 6 | $583 |
| Applied Medical Resources Corporation | 1 | $500 |
| Conmed Corporation | 5 | $331 |
| Stryker | 2 | $282 |
| Baxter Healthcare | 3 | $239 |
| Innovation Technologies Inc | 3 | $188 |
| Medtronic | 2 | $162 |
| Polynovo North America LLC | 1 | $140 |
| W. L. Gore & Associates, Inc. | 1 | $124 |
| Covidien LP | 1 | $109 |
| Solventum Corporation | 1 | $86 |
| Heron Therapeutics, Inc. | 1 | $64 |
| Axonics, Inc. | 2 | $35 |
| Trevena, Inc. | 1 | $17 |
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.
- CONTOUR$87,786
- Enseal$62,298
- Echelon Flex$49,479
- Harmonic$49,329
- ENSEAL Product Family$28,317
- ECHELON ENDOPATH Stapler$28,206
- ETHICON ENDO-SURGERY Curved Intraluminal Stapler$27,506
- BRIDION$14,320
- ECHELON ENDOPATH$11,246
- N/A$10,950
- Da Vinci Surgical System$10,511
- ENTEREG$8,788
- EXPAREL$8,206
- DA VINCI SP$6,546
- DSUVIA$3,017
- ECHELON FLEX Stapler$2,294
- EVIS EXERA$2,225
- STRATAFIX$811
- HARMONIC Product Family$703
- SURGICEL Family of Absorbable Hemostats$700
How this compares
$200,510 in reported general payments places this provider in the 95th 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 | 54 | $3,684 |
| Sodium Chloride0.9 % Sodium Chloride | 15 | $813 |
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 18 | $263 |
| Neomycin Sulfate | 37 | $190 |
| Metronidazole | 38 | $55 |
Paid to pharmacies, not to this prescriber.
Other colon & rectal surgery in Chicago
- 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
- Anders MellgrenChicago$10K
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.