Matthew Larson, MD
Urology · Sioux Falls, SDNPI 1346703634
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 29 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Boston Scientific accounts for 61.4% of it on its own, with 13 other manufacturers making up the rest. 2025 is the largest year on record at $397, 2.6 times the $152 reported in 2021.
Across 29 payments — averaging $40.17 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$716
- Johnson & Johnson$127
- Histosonics, Inc.$52
- Antares Pharma, Inc.$35
- Intuitive Surgical$33
- Organogenesis Inc.$30
- plus $171 from 8 others
What the payments were for
- Food & beverage$1,165100%
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 |
|---|---|---|
| Boston Scientific | 13 | $716 |
| Johnson & Johnson | 3 | $127 |
| Histosonics, Inc. | 1 | $52 |
| Antares Pharma, Inc. | 2 | $35 |
| Intuitive Surgical | 1 | $33 |
| Organogenesis Inc. | 1 | $30 |
| Procept Biorobotics Corporation | 1 | $25 |
| AbbVie | 1 | $24 |
| Teleflex LLC | 1 | $23 |
| Immunitybio, Inc. | 1 | $21 |
| Urogen Pharma, Inc. | 1 | $21 |
| C. R. Bard, Inc. & Subsidiaries | 1 | $20 |
| Sumitomo Pharma America, Inc. | 1 | $19 |
| AstraZeneca | 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.
- AdVance XP$143
- AMS 700$111
How this compares
$1,165 in reported general payments places this provider in the 55th percentile of 40 urology providers in South Dakota.
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 |
|---|---|---|
| Tamsulosin Hcl | 50 | $445 |
| Finasteride | 22 | $195 |
| Nitrofurantoin Mono-MacroNitrofurantoin Monohyd/M-Cryst | 13 | $117 |
| Oxybutynin Chloride | 11 | $111 |
| Oxycodone Hcl | 20 | $41 |
| Ciprofloxacin Hcl | 12 | $19 |
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 12 | $16 |
Paid to pharmacies, not to this prescriber.
Other urology in Sioux Falls
- Lauren ThumSioux Falls$7K
- Eugene ParkSioux Falls$2K
- Nathan BockholtSioux Falls$2K
- Matthew WitteSioux Falls$2K
- Dennis ThumSioux Falls$2K
- Brian LindamanSioux Falls$1K
- Darlys HoferSioux Falls$1K
- David ArendSioux Falls$948
- Michael GillettSioux Falls$713
- Alex HannemannSioux Falls$645
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.