Zachary Hammons
Psychiatry · Johnson City, TNNPI 1073779799
Payments from drug & device makers
Across 254 payments — averaging $17.30 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$2K
- ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$493
- Vanda Pharmaceuticals Inc.$444
- Otsuka America Pharmaceutical, Inc.$352
- Axsome Therapeutics, Inc.$261
- Alkermes, Inc.$210
- plus $740 from 10 others
What the payments were for
- Food & beverage$4,31898%
- Education$772%
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(2 entities) | 132 | $1,894 |
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 24 | $493 |
| Vanda Pharmaceuticals Inc. | 27 | $444 |
| Otsuka America Pharmaceutical, Inc. | 19 | $352 |
| Axsome Therapeutics, Inc. | 14 | $261 |
| Alkermes, Inc. | 3 | $210 |
| Braeburn Inc. | 13 | $175 |
| Gilead | 3 | $167 |
| Indivior Inc. | 7 | $164 |
| Lundbeck LLC | 6 | $114 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $30 |
| Supernus Pharmaceuticals, Inc. | 1 | $24 |
| Avanir Pharmaceuticals, Inc. | 1 | $22 |
| Sunovion Pharmaceuticals Inc. | 1 | $18 |
| Biodelivery Sciences International, Inc. | 1 | $14 |
| Idorsia Pharmaceuticals US Inc | 1 | $13 |
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
$4,395 in reported general payments places this provider in the 80th percentile of 503 psychiatry providers in Tennessee.
Most prescribed under Part D
| Drug | Claims | Cost to plans & patients |
|---|---|---|
| RexultiBrexpiprazole | 39 | $62,044 |
| VraylarCariprazine Hcl | 14 | $19,676 |
| ZubsolvBuprenorphine Hcl/Naloxone Hcl | 44 | $17,490 |
| Nicotrol NsNicotine | 19 | $10,596 |
| Buprenorphine-NaloxoneBuprenorphine Hcl/Naloxone Hcl | 250 | $10,105 |
| TrintellixVortioxetine Hydrobromide | 19 | $8,332 |
| SuboxoneBuprenorphine Hcl/Naloxone Hcl | 13 | $4,937 |
| Chlorpromazine Hcl | 13 | $1,880 |
| Clonazepam | 148 | $1,413 |
| Mirtazapine | 59 | $820 |
| Vilazodone Hcl | 15 | $769 |
| Ziprasidone Hcl | 13 | $765 |
| Duloxetine Hcl | 35 | $659 |
| Modafinil | 13 | $610 |
| Venlafaxine Hcl ErVenlafaxine Hcl | 12 | $464 |
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 |
|---|---|---|
| Otsuka America Pharmaceutical, Inc.Rexulti | $352 | $62,04439 claims |
| AbbVieVraylar | $1,894 | $19,67614 claims |
| Takeda Pharmaceuticals U.S.A., Inc.Trintellix | $30 | $8,33219 claims |
| Indivior Inc.Suboxone | $164 | $4,93713 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 80th percentile of 503 psychiatry providers in Tennessee.
Other psychiatry in Johnson City
- Brian BonfardinJohnson City$2.6M
- John FenleyJohnson City$1.4M
- George BrownJohnson City$91K
- Kevin TurnerJohnson City$9K
- Rakesh AminNashville$3M
- Paul NewhouseNashville$1.4M
- Anita VarmaMemphis$1.3M
- Patricia AndrewsNashville$748K
- David SnowMaryville$605K
- Jonathan BeckerBrentwood$261K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.