John Butler, MD
Ophthalmology · Salisbury, MDNPI 1174521264
Payments from drug & device makers
Across 62 payments — averaging $72.85 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- US Retina LLC$4K
- Genentech USA, Inc.$338
- Apellis Pharmaceuticals, Inc.$193
- AbbVie$163
- Regeneron Healthcare Solutions, Inc.$151
- Astellas Pharma US Inc$31
What the payments were for
- Food & beverage$87619%
- Ownership interest$3,64181%
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 |
|---|---|---|
| US Retina LLC | 12 | $3,641 |
| Genentech USA, Inc. | 29 | $338 |
| Apellis Pharmaceuticals, Inc. | 8 | $193 |
| AbbVie | 6 | $163 |
| Regeneron Healthcare Solutions, Inc. | 6 | $151 |
| Astellas Pharma US Inc | 1 | $31 |
How this compares
$4,517 in reported general payments places this provider in the 75th percentile of 493 ophthalmology providers in Maryland.
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 | 56 | $2,312 |
| Ketorolac Tromethamine | 37 | $546 |
| ErythromycinErythromycin Base | 25 | $256 |
| Timolol Maleate | 30 | $215 |
| Brimonidine Tartrate | 20 | $206 |
| Latanoprost | 13 | $74 |
Paid to pharmacies, not to this prescriber.
Other ophthalmology in Salisbury
- Jeffrey BennerSalisbury$95K
- Allen HuHagerstown$47.9M
- David WarrowHagerstown$10M
- Daniel FinkelsteinBaltimore$6.9M
- Eric SuanBaltimore$6.9M
- Peter CampochiaroBaltimore$5.4M
- Neil BresslerBaltimore$3.6M
- Alfred SommerBaltimore$2.9M
- Richard AdlerBaltimore$2.7M
- John ThompsonBaltimore$1.8M
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.