Donald Ammerman, MD
Psychiatry · Danbury, CTNPI 1316032295
Payments from drug & device makers
Across 2,083 payments — averaging $728.16 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$796K
- ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$521K
- Neurocrine Biosciences, Inc.$165K
- Vanda Pharmaceuticals Inc.$34K
- E.r. Squibb & Sons, L.L.C.$309
- Teva Pharmaceuticals USA, Inc.$140
- plus $785 from 14 others
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(2 entities) | 1,212 | $795,699 |
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 564 | $520,937 |
| Neurocrine Biosciences, Inc. | 189 | $165,271 |
| Vanda Pharmaceuticals Inc. | 61 | $33,609 |
| E.r. Squibb & Sons, L.L.C. | 15 | $309 |
| Teva Pharmaceuticals USA, Inc. | 6 | $140 |
| Supernus Pharmaceuticals, Inc. | 4 | $128 |
| Otsuka America Pharmaceutical, Inc. | 6 | $124 |
| Johnson & Johnson | 4 | $86 |
| Sunovion Pharmaceuticals Inc. | 7 | $73 |
| Neuronetics, Inc. | 1 | $73 |
| Alkermes, Inc. | 3 | $56 |
| Avanir Pharmaceuticals, Inc. | 2 | $41 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $41 |
| Tempus AI, Inc | 2 | $40 |
| Lundbeck LLC | 1 | $33 |
| Arbor Pharmaceuticals, Inc. | 1 | $30 |
| Axsome Therapeutics, Inc. | 1 | $30 |
| Tris Pharma Inc | 1 | $15 |
| Neos Therapeutics, LP | 1 | $15 |
How this compares
$1,516,751 in reported general payments places this provider in the 95th percentile of 644 psychiatry providers in Connecticut.
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.
Other psychiatry in Danbury
- Tarique PereraDanbury$383K
- John GelinasDanbury$364K
- Ghazi AsaadDanbury$29K
- Joseph WilliamsDanbury$28K
- Jeffrey SatinoverDanbury$16K
- Vladimir CoricNew Haven$133.7M
- Christopher VandyckNew Haven$20.8M
- Bart SloanNorwalk$6.8M
- Adam MeccaNew Haven$5.1M
- David MatuskeyFarmington$3M
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.