Mark Silversmith, MD
Gastroenterology · Bedford, NHNPI 1104825587
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 99.5% of the total across 106 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 23 manufacturers reported payments, led by Boston Scientific at 33.4% of the total. Reporting peaked in 2019 at $1,530 and has fallen 69.8% since, to $463 in 2025.
Across 106 payments — averaging $53.91 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$2K
- AbbVie$853
- Cook Medical LLC$641
- Bristol Myers Squibb$415
- Ambu Inc.$221
- Regeneron Healthcare Solutions, Inc.$205
- plus $1K from 17 others
What the payments were for
- Grants$291%
- Food & beverage$5,68599%
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 |
|---|---|---|
| Boston Scientific | 24 | $1,908 |
| AbbVie | 19 | $853 |
| Cook Medical LLC | 13 | $641 |
| Bristol Myers Squibb | 1 | $415 |
| Ambu Inc. | 2 | $221 |
| Regeneron Healthcare Solutions, Inc. | 3 | $205 |
| Johnson & Johnson | 7 | $182 |
| Takeda Pharmaceuticals U.S.A., Inc. | 10 | $174 |
| Steris Corporation | 1 | $143 |
| Pentax Of America, Inc. | 1 | $125 |
| Intercept Pharmaceuticals, Inc. | 1 | $116 |
| Endogastric Solutions, Inc | 1 | $112 |
| Janssen Scientific Affairs, LLC | 1 | $103 |
| Sanofi | 5 | $99 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $94 |
| Gilead | 1 | $89 |
| Shire North American Group Inc | 4 | $87 |
| Phathom Pharmaceuticals, Inc. | 6 | $61 |
| Ipsen Biopharmaceuticals, Inc | 1 | $28 |
| QOL Medical, LLC | 1 | $23 |
| Heraeus Medical, LLC. | 1 | $12 |
| Covidien LP | 1 | $11 |
| UCB, Inc. | 1 | $11 |
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.
- ZEPOSIA$415
- RESOLUTION CLIP$232
- Resolution 360 Clip$154
- TRUFREEZE$143
- NA$143
- GENERAL - BILIARY DEVICES$130
- Cook Medical$125
- C2 Cryoballoon$125
- EXALT$123
- OCALIVA$116
- ESOPHYX$112
- DUPIXENT$108
- Humira$105
- GENERAL ENDOCHOICE$105
- STELARA$103
- EXALT BX 2$100
How this compares
$5,714 in reported general payments places this provider in the 85th percentile of 91 gastroenterology providers in New Hampshire.
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 |
|---|---|---|
| Ursodiol | 15 | $4,141 |
| Mesalamine | 19 | $3,201 |
| Esomeprazole Magnesium | 12 | $567 |
| Omeprazole | 50 | $523 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Bedford
- Ergen MusoBedford$4K
- Christopher DainiakBedford$701
- Angel Fernandez SeguraBedford$537
- Lee KaplanLebanon$1.2M
- Corey SiegelLebanon$602K
- Brian LacyLebanon$177K
- Leon McLeanDerry$171K
- Shelby SullivanLebanon$137K
- Michael WinterLebanon$58K
- Stuart GordonLebanon$42K
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.