Hazel Mathes, DO
Physical Medicine & Rehabilitation · Green Bay, WINPI 1689028243
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. 13 manufacturers reported payments, led by Ipsen Biopharmaceuticals, Inc at 31.2% of the total. Reporting peaked in 2022 at $431 and has fallen 74.8% since, to $109 in 2024.
Across 29 payments — averaging $34.51 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Ipsen Biopharmaceuticals, Inc$312
- Piramal Critical Care$191
- Merz Pharmaceuticals, LLC$124
- Biogen$86
- AbbVie$85
- EMD Serono, Inc.$52
- plus $150 from 7 others
What the payments were for
- Food & beverage$1,001100%
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 |
|---|---|---|
| Ipsen Biopharmaceuticals, Inc | 7 | $312 |
| Piramal Critical Care | 6 | $191 |
| Merz Pharmaceuticals, LLC | 4 | $124 |
| Biogen | 2 | $86 |
| AbbVie(2 entities) | 2 | $85 |
| EMD Serono, Inc. | 1 | $52 |
| Johnson & Johnson | 1 | $32 |
| Corium, LLC | 1 | $25 |
| Neurocrine Biosciences, Inc. | 1 | $21 |
| TG Therapeutics, Inc. | 1 | $20 |
| UCB, Inc. | 1 | $19 |
| Amgen | 1 | $17 |
| AstraZeneca | 1 | $15 |
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.
- DYSPORT$223
How this compares
$1,001 in reported general payments places this provider in the 80th percentile of 207 physical medicine & rehabilitation providers in Wisconsin.
See all physical medicine & rehabilitation 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 |
|---|---|---|
| Gabapentin | 39 | $764 |
| Duloxetine Hcl | 22 | $477 |
| Baclofen | 44 | $474 |
| Tizanidine Hcl | 29 | $455 |
| Nortriptyline Hcl | 11 | $25 |
Paid to pharmacies, not to this prescriber.
Other physical medicine & rehabilitation in Green Bay
- Eric DvorakGreen Bay$3K
- Brian KnappGreen Bay$1K
- Danzhu GuoGreen Bay$638
- Xinqian ChenGreen Bay$511
- Jason SchaveGreen Bay$385
- Nicholas KetchumMilwaukee$573K
- Christopher CronsellMilwaukee$353K
- Karin GoodfriendMilwaukee$191K
- John McGuireMilwaukee$75K
- Erin McGonigleMilwaukee$66K
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.