Zoe Stewart Lewis, MD
Surgery · Iowa City, IANPI 1780734335
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $5,808 of the $6,198 with a category attached, or 93.7%. Transmedics, Inc. accounts for 80.8% of it on its own, with 5 other manufacturers making up the rest.
Across 18 payments — averaging $344.32 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Transmedics, Inc.$5K
- Medtronic$980
- Baxter Healthcare$126
- Johnson & Johnson$38
- Abbott$26
- Merck$18
Across 1 payment — averaging $22,400 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.$22K
What the payments were for
- Travel & lodging$5,80894%
- Food & beverage$3726%
- Education$180%
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 |
|---|---|---|
| Transmedics, Inc. | 6 | $5,010 |
| Medtronic | 8 | $980 |
| Baxter Healthcare | 1 | $126 |
| Johnson & Johnson | 1 | $38 |
| Abbott | 1 | $26 |
| Merck | 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.
- ORGAN CARE SYSTEM$5,010
- LigaSure$745
- FLOSEAL$126
How this compares
$6,198 in reported general payments places this provider in the 80th percentile of 331 surgery providers in Iowa.
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 |
|---|---|---|
| Atovaquone | 12 | $6,854 |
| Valganciclovir Hcl | 30 | $5,834 |
| Mycophenolate Mofetil | 13 | $2,528 |
| Clotrimazole | 18 | $639 |
| Prednisone | 73 | $391 |
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 53 | $239 |
| Pantoprazole Sodium | 18 | $200 |
| Metoprolol Tartrate | 18 | $126 |
| Furosemide | 20 | $50 |
| Carvedilol | 20 | $25 |
| Amlodipine Besylate | 15 | $24 |
Paid to pharmacies, not to this prescriber.
Other surgery in Iowa City
- Rory CarrollIowa City$22K
- Vikas DudejaIowa City$20K
- Samuel JonesIowa City$20K
- Jessica SmithIowa City$18K
- Paul PiersonIowa City$17K
- Joseph CullenIowa City$13K
- Isaac SamuelIowa City$13K
- Ryan LehmannIowa City$12K
- Peter NauIowa City$10K
- Sara HerreraIowa City$9K
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.