Sharon Chastain, MD
Psychiatry · Maryville, TNNPI 1033299102
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 418 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 18 manufacturers, the largest accounting for just 17.3% — the pattern of someone who eats at a lot of different presentations. Reporting peaked in 2022 at $1,687 and has fallen 63.6% since, to $614 in 2025. Among psychiatry clinicians in TN 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 418 payments — averaging $21.69 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Otsuka America Pharmaceutical, Inc.$2K
- Johnson & Johnson$1K
- Neurocrine Biosciences, Inc.$1K
- Alkermes, Inc.$1K
- AbbVie$1K
- ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.)$755
- plus $2K from 12 others
What the payments were for
- Food & beverage$9,064100%
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 |
|---|---|---|
| Otsuka America Pharmaceutical, Inc. | 57 | $1,565 |
| Johnson & Johnson(2 entities) | 85 | $1,169 |
| Neurocrine Biosciences, Inc. | 23 | $1,093 |
| Alkermes, Inc. | 39 | $1,049 |
| AbbVie(2 entities) | 43 | $1,038 |
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 21 | $755 |
| Lundbeck LLC | 60 | $503 |
| Supernus Pharmaceuticals, Inc. | 23 | $439 |
| Teva Pharmaceuticals USA, Inc. | 25 | $361 |
| Sunovion Pharmaceuticals Inc. | 18 | $284 |
| Avanir Pharmaceuticals, Inc. | 3 | $245 |
| Corium, LLC | 6 | $158 |
| E.r. Squibb & Sons, L.L.C. | 2 | $157 |
| Ironshore Pharmaceuticals Inc. | 6 | $133 |
| Axsome Therapeutics, Inc. | 2 | $39 |
| Adlon Therapeutics L.p. | 2 | $35 |
| Takeda Pharmaceuticals U.S.A., Inc. | 2 | $27 |
| Vanda Pharmaceuticals Inc. | 1 | $14 |
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.
- ARISTADA$915
- VRAYLAR$492
- ABILIFY MAINTENA$361
- CAPLYTA$250
- ABILIFY ASIMTUFII$244
- ARISTADA INITIO$229
- NUEDEXTA$228
- INGREZZA$205
- COBENFY$141
- REXULTI$122
- INVEGA SUSTENNA$113
- LATUDA$106
- SPRAVATO$102
How this compares
$9,064 in reported general payments places this provider in the 90th percentile of 503 psychiatry providers in Tennessee.
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 |
|---|---|---|
| Invega SustennaPaliperidone Palmitate | 36 | $136,559 |
| IngrezzaValbenazine Tosylate | 15 | $113,445 |
| VraylarCariprazine Hcl | 62 | $89,297 |
| Abilify MaintenaAripiprazole | 15 | $46,083 |
| LybalviOlanzapine/Samidorphan Malate | 12 | $19,065 |
| TrintellixVortioxetine Hydrobromide | 12 | $12,251 |
| Clozapine | 70 | $4,714 |
| Divalproex Sodium ErDivalproex Sodium | 55 | $3,247 |
| Divalproex Sodium | 20 | $2,465 |
| Quetiapine Fumarate | 92 | $2,066 |
| Buspirone Hcl | 64 | $1,775 |
| Aripiprazole | 36 | $1,694 |
| Lurasidone Hcl | 30 | $1,580 |
| Venlafaxine Hcl ErVenlafaxine Hcl | 127 | $1,530 |
| Bupropion XlBupropion Hcl | 60 | $1,462 |
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 |
|---|---|---|
| Johnson & JohnsonInvega Sustenna | $1,169 | $136,55936 claims |
| Neurocrine Biosciences, Inc.Ingrezza | $1,093 | $113,44515 claims |
| AbbVieVraylar | $1,038 | $89,29762 claims |
| Otsuka America Pharmaceutical, Inc.Abilify Maintena | $1,565 | $46,08315 claims |
| Alkermes, Inc.Lybalvi | $1,049 | $19,06512 claims |
| Takeda Pharmaceuticals U.S.A., Inc.Trintellix | $27 | $12,25112 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 503 psychiatry providers in Tennessee.
Other psychiatry in Maryville
- David SnowMaryville$605K
- Rakesh AminNashville$3M
- Brian BonfardinJohnson City$2.6M
- John FenleyJohnson City$1.4M
- Karthi NamasivayamKnoxville$225K
- Robert JamiesonNashville$141K
- George BrownJohnson City$91K
- Sricharan MoturiFranklin$82K
- Michelle CochranNashville$74K
- Daniel BoydMemphis$69K
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.