Charles Barsam, MD
Ophthalmology · Cambridge, MANPI 1760470041
Payments from drug & device makers
Across 147 payments — averaging $23.18 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$2K
- Sun Pharmaceutical Industries Inc.$404
- Alcon$304
- Biotissue Holdings Inc.$268
- Apellis Pharmaceuticals, Inc.$151
- Dompe US, Inc.$123
- plus $570 from 15 others
What the payments were for
- Food & beverage$3,38399%
- Entertainment$241%
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 |
|---|---|---|
| AbbVie(2 entities) | 81 | $1,587 |
| Sun Pharmaceutical Industries Inc. | 14 | $404 |
| Alcon | 9 | $304 |
| Biotissue Holdings Inc. | 10 | $268 |
| Apellis Pharmaceuticals, Inc. | 6 | $151 |
| Dompe US, Inc. | 4 | $123 |
| Glaukos Corporation | 3 | $104 |
| Astellas Pharma US Inc | 3 | $81 |
| Regeneron Healthcare Solutions, Inc. | 2 | $66 |
| Mallinckrodt Enterprises LLC | 2 | $58 |
| Bausch & Lomb Americas Inc. | 2 | $35 |
| Eyevance Pharmaceuticals LLC | 2 | $35 |
| Merz Pharmaceuticals, LLC | 1 | $33 |
| Rxsight Inc | 1 | $25 |
| Optos, Inc. | 1 | $24 |
| Sight Sciences, Inc. | 1 | $22 |
| Shire North American Group Inc | 1 | $20 |
| Tarsus Pharmaceuticals, Inc. | 1 | $19 |
| Kala Pharmaceuticals, Inc. | 1 | $17 |
| Johnson & Johnson Surgical Vision, Inc. | 1 | $15 |
| Thea Pharma Inc. | 1 | $14 |
How this compares
$3,407 in reported general payments places this provider in the 70th percentile of 653 ophthalmology providers in Massachusetts.
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 |
|---|---|---|
| RestasisCyclosporine | 21 | $23,155 |
| CequaCyclosporine | 31 | $20,839 |
| Prednisolone Acetate | 507 | $15,745 |
| Brimonidine Tartrate | 64 | $3,579 |
| Latanoprost | 210 | $3,214 |
| Ketorolac Tromethamine | 269 | $3,212 |
| Neomycin-Polymyxin-DexamethNeomycin/Polymyxin B/Dexametha | 234 | $2,526 |
| Travoprost | 14 | $2,247 |
| Brimonidine Tartrate-TimololBrimonidine Tartrate/Timolol | 20 | $2,198 |
| Ofloxacin | 175 | $1,668 |
| Dorzolamide-TimololDorzolamide Hcl/Timolol Maleat | 50 | $1,501 |
| Pilocarpine Hcl | 18 | $957 |
| Amoxicillin-Clavulanate PotassAmoxicillin/Potassium Clav | 12 | $42 |
| Diazepam | 39 | $34 |
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 |
|---|---|---|
| AbbVieRestasis | $1,587 | $23,15521 claims |
| Sun Pharmaceutical Industries Inc.Cequa | $404 | $20,83931 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 70th percentile of 653 ophthalmology providers in Massachusetts.
Other ophthalmology in Cambridge
- Shilpa DesaiCambridge$67K
- Gail TorkildsenAndover$5.1M
- David LallySpringfield$4.5M
- Jennifer SunBoston$4.2M
- Lloyd AielloBoston$3.1M
- Rishi SinghBoston$2.5M
- Rachel HuckfeldtStoneham$1.7M
- Mark AbelsonAndover$1.3M
- Peter ChangWaltham$1M
- Stephen AnesiWaltham$922K
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.