Sergio Casillas-Romero, MD
Colon & Rectal Surgery · Norwich, CTNPI 1417035338
Payments from drug & device makers
What this record shows
The money is spread across several categories — education (47.5%), consulting fees and food and beverage — rather than concentrated in one kind of arrangement. 5 manufacturers reported payments, led by Intuitive Surgical at 57.7% of the total. Reporting peaked in 2021 at $4,678 and has fallen 97.3% since, to $127 in 2024.
Across 26 payments — averaging $324.09 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$5K
- Covidien LP$3K
- Medtronic$246
- Axonics, Inc.$77
- Kerecis Limited$17
Across 32 payments — averaging $1354.99 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.
- Medtronic$37K
- Covidien LP$6K
What the payments were for
- Consulting fees$3,14237%
- Travel & lodging$4615%
- Food & beverage$5687%
- Education$4,00047%
- Gifts$2553%
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 | 7 | $4,861 |
| Covidien LP | 3 | $3,226 |
| Medtronic | 11 | $246 |
| Axonics, Inc. | 4 | $77 |
| Kerecis Limited | 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.
- Da Vinci Surgical System$4,725
- Vsiii$1,600
How this compares
$8,426 in reported general payments places this provider in the 80th percentile of 48 colon & rectal surgery providers in Connecticut.
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 |
|---|---|---|
| LinzessLinaclotide | 18 | $9,803 |
| Codeine Sulfate | 11 | $1,044 |
| Ondansetron OdtOndansetron | 57 | $430 |
| Hydrocortisone | 35 | $337 |
| Ibuprofen | 45 | $183 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 30 | $128 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 11 | $116 |
| Tramadol Hcl | 58 | $96 |
| Oxycodone Hcl | 19 | $86 |
| Gabapentin | 20 | $57 |
| Neomycin Sulfate | 13 | $45 |
| Metronidazole | 13 | $18 |
| Omeprazole | 11 | $16 |
Paid to pharmacies, not to this prescriber.
Other colon & rectal surgery in Norwich
- John MonsonDanbury$182K
- George YavorekNew Haven$45K
- Nicole SaurFairfield$36K
- Haddon PantelNew Haven$22K
- Ryan BendlNorwalk$12K
- Marc CasasantaDanbury$11K
- Anne MongiuNew Haven$10K
- Christine BartusNew Britain$9K
- Eric GirardFarmington$8K
- Kristy ThurstonHartford$8K
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.