Gregory Lantz, DPM
Foot & Ankle Surgery · Waterloo, IANPI 1154310456
Payments from drug & device makers
What this record shows
Stryker accounts for 88.6% of it on its own, with 15 other manufacturers making up the rest. Reporting peaked in 2019 at $2,599 and has fallen 84.2% since, to $411 in 2025.
Across 131 payments — averaging $69.19 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Stryker$8K
- Smith+Nephew$210
- Biocomposites Inc$150
- Organogenesis Inc.$145
- Treace Medical Concepts, Inc.$129
- Paragon 28, Inc.$79
- plus $317 from 10 others
What the payments were for
- Travel & lodging$4,03545%
- Food & beverage$5,02955%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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 |
|---|---|---|
| Stryker(2 entities) | 85 | $8,034 |
| Smith+Nephew | 10 | $210 |
| Biocomposites Inc | 1 | $150 |
| Organogenesis Inc. | 12 | $145 |
| Treace Medical Concepts, Inc. | 3 | $129 |
| Paragon 28, Inc. | 3 | $79 |
| Kuros Biosciences USA, Inc | 1 | $74 |
| Next Science LLC | 1 | $48 |
| Bioventus LLC | 2 | $35 |
| Orthofix Medical, Inc. | 7 | $35 |
| Johnson & Johnson | 1 | $31 |
| Paratek Pharmaceuticals, Inc. | 1 | $22 |
| Osiris Therapeutics Inc. | 1 | $22 |
| Integra Lifesciences Corporation | 1 | $19 |
| Zimmer Biomet | 1 | $18 |
| Heron Therapeutics, Inc. | 1 | $12 |
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.
- INFINITY$2,331
- PROstep$2,322
- AUGMENT INJECTABLE$489
- ORTHOLOC 3DI CROSSCHECK$170
- Viaflow$170
- PROSTEP MICA$163
- CARTIVA$156
- Stimulan$150
- ORTHOLOC 3DI$132
- Actishield$114
How this compares
$9,064 in reported general payments places this provider in the 75th percentile of 112 foot & ankle 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 |
|---|---|---|
| Terbinafine Hcl | 49 | $441 |
| SsdSilver Sulfadiazine | 69 | $394 |
| Doxycycline Monohydrate | 31 | $377 |
| Celecoxib | 20 | $316 |
| Silver Sulfadiazine | 58 | $302 |
| Cephalexin | 22 | $233 |
| Meloxicam | 35 | $117 |
| Nystatin | 11 | $105 |
| Mupirocin | 15 | $102 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 14 | $100 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 16 | $99 |
| Gabapentin | 13 | $88 |
Paid to pharmacies, not to this prescriber.
Other foot & ankle surgery in Waterloo
- Gregory FooteWaterloo$35K
- Samuel BernardWaterloo$11K
- Kelsey SukovatyWaterloo$10K
- Michael OwensWaterloo$9K
- Maliha ArzumandWaterloo$5K
- Ryan BauermeisterWaterloo$5K
- John WhittWaterloo$3K
- Kathie WhittWaterloo$3K
- Michael LeeDes Moines$2.1M
- Phinit PhisitkulSioux City$1.4M
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.