Matthew Winkels, MD
Ophthalmology · Mayville, NDNPI 1811450588
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $1,549 of the $2,241 with a category attached, or 69.1%. Alcon accounts for 93.8% of it on its own, with 3 other manufacturers making up the rest.
Across 19 payments — averaging $117.93 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alcon$2K
- Bausch & Lomb Americas Inc.$66
- Rxsight Inc$55
- Glaukos Corporation$18
What the payments were for
- Speaking & faculty fees$392%
- Travel & lodging$1,54969%
- Food & beverage$65329%
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 |
|---|---|---|
| Alcon | 14 | $2,102 |
| Bausch & Lomb Americas Inc. | 2 | $66 |
| Rxsight Inc | 2 | $55 |
| Glaukos Corporation | 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.
- Unity$1,549
- Clareon$832
- LenSx$671
- Voyager DSLT$671
- Wavelight Refractive Suite$671
- Contoura Vision$112
How this compares
$2,241 in reported general payments places this provider in the 75th percentile of 41 ophthalmology providers in North 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 |
|---|---|---|
| Prednisolone Acetate | 36 | $2,284 |
| MoxifloxacinMoxifloxacin Hcl | 30 | $892 |
| Ketorolac Tromethamine | 27 | $748 |
Paid to pharmacies, not to this prescriber.
Other ophthalmology in Mayville
- Michael GreenwoodWest Fargo$500K
- Lance BergstromFargo$10K
- Jennifer OlbumFargo$8K
- Michelle AtchisonFargo$3K
- Anne KeatingFargo$3K
- Craig MasonFargo$3K
- Robert GokeyMinot$3K
- Thomas StrindenFargo$3K
- Steven AndersonFargo$2K
- Landon KarrenGrand Forks$2K
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.