Ahmed Nassar
Transplant Surgery · Detroit, MINPI 1740609056
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $3,819 of the $6,243 with a category attached, or 61.2%. Intuitive Surgical accounts for 63.6% of it on its own, with 6 other manufacturers making up the rest.
Across 26 payments — averaging $240.11 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Intuitive Surgical$4K
- Transmedics, Inc.$2K
- Integra Lifesciences Corporation$143
- Aesculap, Inc.$126
- Kala Pharmaceuticals, Inc.$86
- Abbott$67
- plus $18 from 1 others
Across 3 payments — averaging $77,275 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.
- Transmedics, Inc.$232K
What the payments were for
- Travel & lodging$3,81961%
- Food & beverage$91515%
- Education$1,50024%
- Gifts$90%
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 | 13 | $3,969 |
| Transmedics, Inc. | 2 | $1,834 |
| Integra Lifesciences Corporation | 1 | $143 |
| Aesculap, Inc. | 1 | $126 |
| Kala Pharmaceuticals, Inc. | 5 | $86 |
| Abbott | 3 | $67 |
| Biotissue Holdings Inc. | 1 | $18 |
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$2,344
- ORGAN CARE SYSTEM$1,834
- DAVINCI XI$1,500
- CODMAN CERTAS$143
- CUSA CLARITY$143
- DURAGEN$143
- DURASEAL EXACT$143
- CODMAN HAKIM PRECISION VALVE$143
- CAIMAN VESSEL SEALERS$126
How this compares
Too few transplant surgery providers in Michiganto place this figure against a meaningful peer group, so we don't.
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 transplant surgery in Detroit
- Atsushi YoshidaDetroit$219K
- Adhnan MohamedDetroit$14K
- Dean KimDetroit$14K
- Shunji NagaiDetroit$4K
- Abbas Al-KurdDetroit$4K
- Luckshi RajendranDetroit$2K
- Shakir HusseinDetroit$953
- Kazuhiro TakahashiDetroit$72
- Kyle SheetzAnn Arbor$2K
- Ben BiesterveldAnn Arbor$1K
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.