David Zacks, MD
Ophthalmology · Ann Arbor, MINPI 1821006529
Payments from drug & device makers
What this record shows
This record is dominated by grants: $175,000 of the $177,160 with a category attached, or 98.8%. Alcon Research LLC accounts for 98.8% of it on its own, with 2 other manufacturers making up the rest. 2025 is the largest year on record at $175,000, more than ten times the $683 reported in 2019. Among ophthalmology clinicians in MI with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 5 payments — averaging $35,432 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Alcon Research LLC$175K
- Alcon$2K
- Eyepoint US, Inc.$76
What the payments were for
- Grants$175,00099%
- Travel & lodging$1,6501%
- Food & beverage$5100%
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 Research LLC | 1 | $175,000 |
| Alcon | 3 | $2,085 |
| Eyepoint US, Inc. | 1 | $76 |
How this compares
$177,160 in reported general payments places this provider in the 95th percentile of 674 ophthalmology providers in Michigan.
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 | 25 | $1,185 |
| Ketorolac Tromethamine | 32 | $1,124 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 17 | $338 |
| Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha | 25 | $299 |
Paid to pharmacies, not to this prescriber.
Other ophthalmology in Ann Arbor
- Manjool ShahAnn Arbor$609K
- Jason MillerAnn Arbor$104K
- Yannis PaulusAnn Arbor$85K
- Shilpa KodatiAnn Arbor$75K
- Amanda BicketAnn Arbor$34K
- Vinay AakaluAnn Arbor$16K
- Nita ValikodathAnn Arbor$16K
- Marguerite WeinertAnn Arbor$16K
- Abigail FahimAnn Arbor$14K
- Shahzad MianAnn Arbor$14K
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.