Iona Chapman, MD
Dermatology · Houston, TXNPI 1720320385
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 98.6% of the total across 661 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. It is spread thinly across 34 manufacturers, the largest accounting for just 17.5% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2022 at $2,755 and has fallen 72.9% since, to $747 in 2025.
Across 661 payments — averaging $18.70 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$2K
- Johnson & Johnson$2K
- Novartis$2K
- Lilly USA, LLC$859
- Sanofi$737
- Regeneron Healthcare Solutions, Inc.$723
- plus $4K from 28 others
What the payments were for
- Food & beverage$12,18399%
- Education$1791%
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 | 131 | $2,168 |
| Johnson & Johnson | 76 | $1,734 |
| Novartis | 81 | $1,703 |
| Lilly USA, LLC | 42 | $859 |
| Sanofi | 39 | $737 |
| Regeneron Healthcare Solutions, Inc. | 32 | $723 |
| Galderma Laboratories, L.p. | 47 | $648 |
| Incyte Corporation | 43 | $585 |
| UCB, Inc. | 33 | $510 |
| LEO Pharma Inc. | 22 | $405 |
| Sun Pharmaceutical Industries Inc. | 18 | $364 |
| Pfizer | 16 | $311 |
| Amgen | 12 | $299 |
| Mayne Pharma Commercial LLC | 13 | $217 |
| Hill Dermaceuticals, Inc. | 3 | $192 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 8 | $137 |
| Dermavant Sciences, Inc. | 7 | $110 |
| Arcutis Biotherapeutics, Inc. | 5 | $94 |
| Almirall LLC | 4 | $76 |
| Bristol Myers Squibb | 4 | $71 |
| EPI Health, LLC | 4 | $65 |
| E.r. Squibb & Sons, L.L.C. | 3 | $55 |
| VYNE Pharmaceuticals Inc. | 4 | $54 |
| Encore Dermatology Inc. | 2 | $47 |
| Mylan Pharmaceuticals Inc. | 2 | $33 |
| Dermira, Inc. | 2 | $33 |
| Journey Medical Corporation | 1 | $27 |
| Medtronic | 1 | $20 |
| Promius Pharma LLC | 1 | $20 |
| Kerecis Limited | 1 | $18 |
| Boehringer Ingelheim | 1 | $16 |
| Mission Pharmacal Company | 1 | $14 |
| Merck | 1 | $11 |
| Organon | 1 | $6 |
How this compares
$12,362 in reported general payments places this provider in the 75th percentile of 1,098 dermatology providers in Texas.
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 |
|---|---|---|
| Triamcinolone Acetonide | 25 | $535 |
| Ketoconazole | 17 | $269 |
| Clobetasol Propionate | 13 | $169 |
| Doxycycline Hyclate | 16 | $130 |
Paid to pharmacies, not to this prescriber.
Other dermatology in Houston
- Alpesh DesaiHouston$1.6M
- Geeta PatelHouston$575K
- Michael MigdenHouston$310K
- Catherine PapasakelariouHouston$289K
- Stephen MahoneyHouston$137K
- Edward LainAustin$2.5M
- William CragunSan Antonio$2.2M
- Craig TellerBellaire$1.3M
- Jennifer CatherDallas$1.3M
- Emily BeckerSan Antonio$1.2M
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.