David Markman, MD
Ophthalmology · Lawndale, CANPI 1508961640
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 43 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 10 manufacturers reported payments, led by Amgen at 39.0% of the total. Reporting peaked in 2022 at $340 and has fallen 95.6% since, to $15 in 2024. That places this record below the midpoint for ophthalmology clinicians in CA, where the typical reported total is $1,218.
Across 43 payments — averaging $19.12 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Amgen$321
- AbbVie$207
- Novartis$53
- Alcon$50
- Sight Sciences, Inc.$42
- Bausch & Lomb Americas Inc.$42
- plus $106 from 4 others
What the payments were for
- Food & beverage$822100%
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 |
|---|---|---|
| Amgen(2 entities) | 18 | $321 |
| AbbVie(2 entities) | 10 | $207 |
| Novartis | 3 | $53 |
| Alcon | 3 | $50 |
| Sight Sciences, Inc. | 2 | $42 |
| Bausch & Lomb Americas Inc. | 2 | $42 |
| Aerie Pharmaceuticals, Inc. | 2 | $38 |
| Sun Pharmaceutical Industries Inc. | 1 | $31 |
| Bausch & Lomb, A Division Of Bausch Health US, LLC | 1 | $19 |
| Akorn, Inc. | 1 | $18 |
How this compares
$822 in reported general payments places this provider in the 40th percentile of 2,513 ophthalmology providers in California.
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 |
|---|---|---|
| LumiganBimatoprost | 29 | $22,406 |
| RestasisCyclosporine | 15 | $18,344 |
| XiidraLifitegrast | 14 | $17,268 |
| Latanoprost | 708 | $11,784 |
| Timolol Maleate | 168 | $7,886 |
| Brimonidine Tartrate-TimololBrimonidine Tartrate/Timolol | 14 | $5,586 |
| CombiganBrimonidine Tartrate/Timolol | 17 | $4,919 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 207 | $4,892 |
| Brimonidine Tartrate | 119 | $3,339 |
| Prednisolone Acetate | 45 | $1,914 |
| Dorzolamide Hcl | 35 | $1,006 |
| ErythromycinErythromycin Base | 24 | $239 |
| Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha | 22 | $214 |
| Azelastine Hcl | 11 | $104 |
Paid to pharmacies, not to this prescriber.
Companies that both paid and supply prescribed drugs
These companies both reported payments to this provider and make drugs the provider prescribed under Medicare Part D in 2024. For most specialties this overlap is expected — a cardiologist who is paid by a cardiology drugmaker also treats heart disease. It is shown so the reader can see it, not because it implies anything on its own.
| Company | Paid to this provider | Part D cost of their drugs |
|---|---|---|
| AbbVieLumigan, Restasis, Combigan | $207 | $45,66961 claims |
| Bausch & Lomb Americas Inc.Xiidra | $42 | $17,26814 claims |
Reading this fairly. The Part D column is what drug plans and patients paid pharmacies — this provider received none of it, and it reflects how many patients they treat and what those drugs cost. Against peers, this provider's reported payments sit in the 40th percentile of 2,513 ophthalmology providers in California.
Other ophthalmology in Lawndale
- Daniel SchwartzSan Francisco$8M
- Michael BerlinWest Hollywood$5.7M
- Gilbert KlimanMenlo Park$1.5M
- Kuldev SinghStanford$1.5M
- Raymond DouglasBeverly Hills$1.3M
- John AffeldtLoma Linda$1.1M
- Srinivas SaddaPasadena$1M
- Sheri RowenNewport Beach$1M
- Savak TeymoorianLaguna Hills$955K
- Andrew MoshfeghiLos Angeles$895K
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.