Thomas Horn, DO
Psychiatry · Chesterfield, MONPI 1841516598
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $10,440 of the $14,803 with a category attached, or 70.5%. ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) accounts for 89.9% of it on its own, with 12 other manufacturers making up the rest. 2025 is the largest year on record at $13,113, more than ten times the $141 reported in 2019. Among psychiatry clinicians in MO with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 101 payments — averaging $146.57 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$13K
- Sunovion Pharmaceuticals Inc.$898
- AbbVie$240
- Johnson & Johnson$101
- Alkermes, Inc.$65
- Vanda Pharmaceuticals Inc.$42
- plus $142 from 7 others
What the payments were for
- Consulting fees$1,62011%
- Speaking & faculty fees$10,44071%
- Travel & lodging$7475%
- Food & beverage$1,99013%
- Education$60%
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.
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.
- CAPLYTA$12,710
- LONHALA MAGNAIR$242
- LATUDA$107
How this compares
$14,803 in reported general payments places this provider in the 90th percentile of 680 psychiatry providers in Missouri.
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 |
|---|---|---|
| Tasimelteon | 12 | $210,193 |
| VraylarCariprazine Hcl | 33 | $45,382 |
| Abilify MaintenaAripiprazole | 12 | $31,148 |
| FanaptIloperidone | 12 | $28,398 |
| VyvanseLisdexamfetamine Dimesylate | 31 | $12,092 |
| Aripiprazole | 110 | $10,254 |
| Lisdexamfetamine Dimesylate | 32 | $6,961 |
| Tranylcypromine Sulfate | 12 | $4,504 |
| Quetiapine Fumarate | 143 | $4,435 |
| ConcertaMethylphenidate Hcl | 11 | $4,151 |
| Fluoxetine Hcl | 118 | $4,025 |
| Duloxetine Hcl | 70 | $3,425 |
| Bupropion XlBupropion Hcl | 115 | $2,933 |
| Trazodone Hcl | 200 | $2,555 |
| Divalproex Sodium | 41 | $2,225 |
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 |
|---|---|---|
| AbbVieVraylar | $240 | $45,38233 claims |
| Otsuka America Pharmaceutical, Inc.Abilify Maintena | $30 | $31,14812 claims |
| Vanda Pharmaceuticals Inc.Fanapt | $42 | $28,39812 claims |
| Takeda Pharmaceuticals U.S.A., Inc.Vyvanse | $21 | $12,09231 claims |
| Johnson & JohnsonConcerta | $101 | $4,15111 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 90th percentile of 680 psychiatry providers in Missouri.
Other psychiatry in Chesterfield
- Rolando LariceChesterfield$21K
- Imran ChishtiChesterfield$12K
- Gregory MattingleySaint Charles$4.7M
- Vadim BaramSaint Louis$1.9M
- Adam SkySaint Louis$1.1M
- Mohd MalikSaint Louis$956K
- Brian BarashKansas City$856K
- Casey ProughLees Summit$615K
- George GrossbergSaint Louis$501K
- Shahid InsafBranson$416K
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.