Leon McLean, MD
Gastroenterology · Derry, NHNPI 1457495806
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $139,129 of the $170,777 with a category attached, or 81.5%. 16 manufacturers reported payments, led by AbbVie at 58.0% of the total. 2025 is the largest year on record at $44,904, 3.5 times the $12,827 reported in 2019. Among gastroenterology clinicians in NH with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 315 payments — averaging $542.15 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$99K
- E.r. Squibb & Sons, L.L.C.$46K
- Johnson & Johnson$17K
- Pfizer$6K
- Bristol Myers Squibb$1K
- Takeda Pharmaceuticals U.S.A., Inc.$389
- plus $622 from 10 others
What the payments were for
- Consulting fees$8,1605%
- Speaking & faculty fees$139,12981%
- Travel & lodging$15,8969%
- Food & beverage$7,5544%
- Education$380%
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 | 169 | $99,076 |
| E.r. Squibb & Sons, L.L.C. | 42 | $46,153 |
| Johnson & Johnson | 32 | $17,278 |
| Pfizer | 8 | $5,797 |
| Bristol Myers Squibb | 23 | $1,461 |
| Takeda Pharmaceuticals U.S.A., Inc. | 16 | $389 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 11 | $212 |
| Conmed Corporation | 1 | $158 |
| Gilead | 4 | $81 |
| Ironwood Pharmaceuticals, Inc | 2 | $37 |
| Celltrion USA Inc. | 2 | $33 |
| Sanofi | 1 | $25 |
| Merck | 1 | $22 |
| QOL Medical, LLC | 1 | $21 |
| Alfasigma USA, Inc. | 1 | $17 |
| UCB, Inc. | 1 | $15 |
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.
How this compares
$170,777 in reported general payments places this provider in the 95th 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 |
|---|---|---|
| Humira(Cf) PenAdalimumab | 12 | $121,654 |
| Humira PenAdalimumab | 12 | $81,674 |
| Mesalamine | 11 | $16,412 |
| Pantoprazole Sodium | 152 | $2,468 |
| Balsalazide Disodium | 14 | $1,677 |
| Omeprazole | 59 | $854 |
| Esomeprazole Magnesium | 23 | $634 |
| Gavilyte-GPeg3350/Sod Sulf,bicarb,cl/Kcl | 49 | $624 |
| Peg-3350 And ElectrolytesPeg3350/Sod Sulf,bicarb,cl/Kcl | 32 | $411 |
| Famotidine | 33 | $267 |
Paid to pharmacies, not to this prescriber.
Other gastroenterology in Derry
- Steven TsistrakisDerry$2K
- Knut RoalsvigDerry$502
- Lee KaplanLebanon$1.2M
- Corey SiegelLebanon$602K
- Brian LacyLebanon$177K
- Shelby SullivanLebanon$137K
- Michael WinterLebanon$58K
- Stuart GordonLebanon$42K
- Robert RubenSomersworth$36K
- Hillary TompkinsExeter$21K
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.