David Rivadeneira, MD
Colon & Rectal Surgery · Woodbury, NYNPI 1457370785
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $184,500 of the $271,311 with a category attached, or 68.0%. 40 manufacturers reported payments, led by Evologics LLC at 31.3% of the total. Among colon & rectal surgery clinicians in NY 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 193 payments — averaging $1405.76 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Evologics LLC$85K
- Dilon Technologies, Inc.$48K
- Stryker$40K
- Biom'up France SAS$32K
- Integra Lifesciences Corporation$26K
- Guard Medical Inc.$17K
- plus $23K from 34 others
What the payments were for
- Consulting fees$184,50068%
- Speaking & faculty fees$29,00011%
- Travel & lodging$11,2444%
- Food & beverage$7,0733%
- Education$190%
- Other$39,47515%
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.
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.
- HemoBlast Bellows$80,177
- INTEGRA$21,481
- OMNIGRAFT$17,222
- NPSEAL LARGE$16,647
- Gelport Laparoscopic System$10,422
- NPseal$9,677
- NPSEAL MEDIUM$9,538
- BILAYER WOUND MATRIX (BWM)$7,000
- FLOWABLE$7,000
- INTEGRA WOUND MATRIX (IWM)$7,000
- IDRT$7,000
- HEMOBLAST$6,552
- SURGIMEND$3,103
- INTEGRA DERMAL REGENERATION TEMPLATE$1,420
- PRIMATRIX$1,420
- Da Vinci Surgical System$244
How this compares
$271,311 in reported general payments places this provider in the 95th percentile of 177 colon & rectal surgery providers in New York.
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 |
|---|---|---|
| Mesalamine | 11 | $2,663 |
| LoperamideLoperamide Hcl | 15 | $689 |
| Neomycin Sulfate | 62 | $316 |
| Metronidazole | 66 | $169 |
| Hydrocortisone | 11 | $156 |
Paid to pharmacies, not to this prescriber.
Other colon & rectal surgery in Woodbury
- Jerald WishnerMount Kisco$246K
- Sanghyun KimNew York$154K
- Ziad KronfolWest Nyack$81K
- Lynn OconnorHuntington$63K
- Mehraneh JafariNew York$50K
- Jeffrey MilsomNew York$42K
- Stephen RauhRochester$37K
- Evelyn IrizarryBronx$26K
- David SchwartzbergNew York$26K
- Richard WhelanNew York$23K
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.