Mark Gorsche, MD
Orthopaedic Surgery · Waterloo, IANPI 1356789390
Payments from drug & device makers
What this record shows
This record is dominated by education: $6,739 of the $10,090 with a category attached, or 66.8%. 12 manufacturers reported payments, led by Arthrex at 56.0% of the total. Reporting peaked in 2021 at $5,804 and has fallen 90.4% since, to $558 in 2025.
Across 89 payments — averaging $113.37 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Arthrex$6K
- Wardlow Enterprises$2K
- Stryker$1K
- Encore Medical, LP$621
- Johnson & Johnson$339
- Zimmer Biomet$49
- plus $147 from 6 others
What the payments were for
- Travel & lodging$8849%
- Food & beverage$2,46824%
- Education$6,73967%
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 |
|---|---|---|
| Arthrex | 22 | $5,647 |
| Wardlow Enterprises | 4 | $2,193 |
| Stryker(2 entities) | 26 | $1,094 |
| Encore Medical, LP | 13 | $621 |
| Johnson & Johnson | 14 | $339 |
| Zimmer Biomet | 2 | $49 |
| Convatec Inc. | 1 | $33 |
| Heraeus Medical, LLC. | 2 | $33 |
| Bioventus LLC | 2 | $29 |
| Sanofi-aventis U.S. LLC | 1 | $17 |
| Smith+Nephew | 1 | $17 |
| Pacira Pharmaceuticals Incorporated | 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.
- DJO SURGICAL$232
- MAKO$126
- SIMPLICITI$123
How this compares
$10,090 in reported general payments places this provider in the 80th percentile of 219 orthopaedic 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 |
|---|---|---|
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 112 | $776 |
| Nabumetone | 50 | $598 |
| Celecoxib | 19 | $525 |
| Oxycodone Hcl | 45 | $273 |
| Tramadol Hcl | 63 | $150 |
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 13 | $89 |
| Pregabalin | 20 | $87 |
| Amoxicillin | 99 | $85 |
| Meloxicam | 11 | $37 |
| Clindamycin Hcl | 15 | $20 |
Paid to pharmacies, not to this prescriber.
Other orthopaedic surgery in Waterloo
- Jay GintherWaterloo$15K
- John CallaghanIowa City$23.3M
- Brian AdamsIowa City$865K
- Cesar de Cesar NettoIowa City$693K
- Lynn NelsonBelmond$285K
- Robert WestermannIowa City$182K
- Joseph BuckwalterIowa City$132K
- Brendan PattersonIowa City$122K
- Nicholas BedardIowa City$59K
- Charles ClarkIowa City$50K
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.