Alexander Ringeisen, MD
Retina Specialist · Woodbury, MNNPI 1710323142
Payments from drug & device makers
What this record shows
This record is dominated by travel and lodging: $840 of the $1,226 with a category attached, or 68.5%. Dutch Ophthalmic, USA accounts for 79.5% of it on its own, with 9 other manufacturers making up the rest. Reporting peaked in 2024 at $857 and has fallen 96.3% since, to $32 in 2025.
Across 12 payments — averaging $102.19 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Dutch Ophthalmic, USA$975
- Carl Zeiss Meditec, Inc.$70
- Alcon$46
- The Cameron-ehlen Group, Inc.$33
- Novartis$23
- Rayner Intraocular Lenses Limited$18
- plus $62 from 4 others
What the payments were for
- Travel & lodging$84068%
- Food & beverage$38732%
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 |
|---|---|---|
| Dutch Ophthalmic, USA | 2 | $975 |
| Carl Zeiss Meditec, Inc. | 1 | $70 |
| Alcon | 2 | $46 |
| The Cameron-ehlen Group, Inc. | 1 | $33 |
| Novartis | 1 | $23 |
| Rayner Intraocular Lenses Limited | 1 | $18 |
| Regeneron Healthcare Solutions, Inc. | 1 | $18 |
| Amgen | 1 | $17 |
| AbbVie | 1 | $15 |
| Genentech USA, Inc. | 1 | $12 |
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.
- EVA, combined machine$975
- TISSUEBLUE$975
How this compares
$1,226 in reported general payments places this provider in the 60th percentile of 20 retina specialist providers in Minnesota.
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 | 114 | $5,563 |
| Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha | 255 | $3,110 |
| Ketorolac Tromethamine | 64 | $1,193 |
| Difluprednate | 13 | $1,189 |
| Latanoprost | 60 | $911 |
| Brimonidine Tartrate | 13 | $783 |
| Timolol Maleate | 27 | $372 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 11 | $106 |
Paid to pharmacies, not to this prescriber.
Other retina specialist in Woodbury
- Malav JoshiRochester$293K
- Abdhish BhavsarMinneapolis$21K
- Zeeshan HaqEdina$12K
- David WilliamsBaxter$9K
- Michael MaywoodEdina$5K
- Guneet SodhiEdina$3K
- Sahal SalehEdina$3K
- Omar DajaniSt Louis Park$1K
- Geoffrey EmersonMinneapolis$500
- Hossein NazariMinneapolis$377
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.