Kostandinos Tsoulfas, MD
Pain Medicine · Greenfield, WINPI 1013088277
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 138 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 27 manufacturers reported payments, led by Nevro Corp. at 35.9% of the total. That places this record below the midpoint for pain medicine clinicians in WI, where the typical reported total is $2,566.
Across 138 payments — averaging $14.99 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Nevro Corp.$743
- Collegium Pharmaceutical, Inc.$230
- Spinal Simplicity, LLC$187
- Lilly USA, LLC$95
- Abbott$82
- Salix Pharmaceuticals, A Division Of Bausch Health US, LLC$75
- plus $657 from 21 others
What the payments were for
- Food & beverage$2,069100%
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 |
|---|---|---|
| Nevro Corp. | 70 | $743 |
| Collegium Pharmaceutical, Inc. | 13 | $230 |
| Spinal Simplicity, LLC | 9 | $187 |
| Lilly USA, LLC | 6 | $95 |
| Abbott | 4 | $82 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 4 | $75 |
| Electronic Waveform Lab, Inc. | 3 | $56 |
| Pacira Therapeutics, Inc. | 2 | $55 |
| Boston Scientific | 1 | $54 |
| Painteq LLC | 1 | $51 |
| Globus Medical | 2 | $48 |
| Biodelivery Sciences International, Inc. | 3 | $46 |
| AstraZeneca | 3 | $38 |
| Curonix LLC | 2 | $34 |
| IBSA Pharma Inc. | 2 | $33 |
| Neuronetics, Inc. | 2 | $30 |
| Johnson & Johnson | 1 | $29 |
| Biohaven Pharmaceutical Holding Company Ltd. | 1 | $26 |
| International Rehabilitative Sciences, Inc | 1 | $26 |
| Foundation Fusion Solutions, LLC | 1 | $22 |
| Orthogenrx Inc. | 1 | $21 |
| AbbVie | 1 | $19 |
| Scilex Pharmaceuticals Inc. | 1 | $17 |
| Heron Therapeutics, Inc. | 1 | $15 |
| Medtronic | 1 | $14 |
| Pfizer | 1 | $13 |
| GRT US Holding, Inc. | 1 | $9 |
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.
- Senza$109
How this compares
$2,069 in reported general payments places this provider in the 45th percentile of 82 pain medicine providers in Wisconsin.
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 |
|---|---|---|
| Cefadroxil | 81 | $487 |
| Clindamycin Hcl | 14 | $105 |
| Methylprednisolone | 14 | $89 |
Paid to pharmacies, not to this prescriber.
Other pain medicine in Greenfield
- Thomas StaussGreenfield$34K
- Kris FergusonGreenfield$18K
- Joseph ReyesGreenfield$9K
- Maher FattouhGreenfield$5K
- Donald HarveyGreenfield$1K
- Sanjay SharmaGreenfield$1K
- Luciana BerceanuGreenfield$1K
- Alaa Abd-ElsayedMadison$1.3M
- Michael JungWest Bend$339K
- Frederick FreitagMadison$157K
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.