Hakan Demirci, MD
Ophthalmology · Ann Arbor, MINPI 1962412593
Payments from drug & device makers
Across 11 payments — averaging $420.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Immunocore Limited$3K
- AbbVie$1K
- Biotissue Holdings Inc.$129
- Stryker$115
- Amgen$98
- Genentech USA, Inc.$80
What the payments were for
- Speaking & faculty fees$4,20091%
- Food & beverage$4219%
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 |
|---|---|---|
| Immunocore Limited | 1 | $3,200 |
| AbbVie | 2 | $1,000 |
| Biotissue Holdings Inc. | 1 | $129 |
| Stryker | 4 | $115 |
| Amgen(2 entities) | 2 | $98 |
| Genentech USA, Inc. | 1 | $80 |
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.
- KIMMTRAK$3,200
- Prokera$129
- AmnioGraft$129
How this compares
$4,621 in reported general payments places this provider in the 80th 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 |
|---|---|---|
| ErythromycinErythromycin Base | 42 | $532 |
| Atropine Sulfate | 11 | $459 |
| Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha | 27 | $380 |
Paid to pharmacies, not to this prescriber.
Other ophthalmology in Ann Arbor
- Thomas WubbenAnn Arbor$1.2M
- Manjool ShahAnn Arbor$745K
- Cagri BesirliAnn Arbor$441K
- Vinay AakaluAnn Arbor$429K
- Shahzad MianAnn Arbor$209K
- Joshua SteinAnn Arbor$200K
- Mark JohnsonAnn Arbor$188K
- David ZacksAnn Arbor$177K
- Thomas GardnerAnn Arbor$156K
- Amanda BicketAnn Arbor$140K
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.