Brian Knutson, MD
Dermatology · Sioux Falls, SDNPI 1720054539
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $637 of the $761 with a category attached, or 83.7%. 11 manufacturers reported payments, led by AbbVie at 32.5% of the total. Reporting peaked in 2024 at $181 and has fallen 50.9% since, to $89 in 2025. That places this record below the midpoint for dermatology clinicians in SD, where the typical reported total is $1,250.
Across 42 payments — averaging $18.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$247
- Regeneron Healthcare Solutions, Inc.$188
- Johnson & Johnson$110
- Organon$56
- Novartis$50
- Arcutis Biotherapeutics, Inc.$33
- plus $76 from 5 others
What the payments were for
- Food & beverage$63784%
- Education$12416%
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 |
|---|---|---|
| AbbVie | 15 | $247 |
| Regeneron Healthcare Solutions, Inc. | 6 | $188 |
| Johnson & Johnson | 7 | $110 |
| Organon | 4 | $56 |
| Novartis | 3 | $50 |
| Arcutis Biotherapeutics, Inc. | 2 | $33 |
| Sun Pharmaceutical Industries Inc. | 1 | $17 |
| Integra Lifesciences Corporation | 1 | $17 |
| Sanofi | 1 | $16 |
| Krystal Biotech Inc | 1 | $15 |
| Amgen | 1 | $11 |
How this compares
$761 in reported general payments places this provider in the 40th percentile of 44 dermatology 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 |
|---|---|---|
| Dupixent SyringeDupilumab | 13 | $46,871 |
| Fluorouracil | 22 | $1,817 |
| Imiquimod | 43 | $873 |
| Mupirocin | 23 | $178 |
| Cephalexin | 55 | $69 |
| Clindamycin Hcl | 11 | $8 |
Paid to pharmacies, not to this prescriber.
Other dermatology in Sioux Falls
- Jana JohnsonSioux Falls$2.1M
- Carmen SchwartzSioux Falls$10K
- Sarah SarbackerSioux Falls$8K
- Kendra WatsonSioux Falls$6K
- Valerie FlynnSioux Falls$3K
- Anna BahnsonSioux Falls$2K
- Kelly JerstadSioux Falls$2K
- Anna SonstegardSioux Falls$1K
- Lainee GoettscheSioux Falls$844
- William BrunnerSioux 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.