William Marshall, MD
Psychiatry · Clemmons, NCNPI 1104992627
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 14 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. 5 manufacturers reported payments, led by AbbVie at 40.0% of the total. 2025 is the largest year on record at $219, more than ten times the $21 reported in 2020.
Across 14 payments — averaging $19.09 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$107
- Alkermes, Inc.$75
- Otsuka America Pharmaceutical, Inc.$52
- Neos Therapeutics, LP$18
- Axsome Therapeutics, Inc.$16
What the payments were for
- Food & beverage$267100%
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) | 5 | $107 |
| Alkermes, Inc. | 4 | $75 |
| Otsuka America Pharmaceutical, Inc. | 3 | $52 |
| Neos Therapeutics, LP | 1 | $18 |
| Axsome Therapeutics, Inc. | 1 | $16 |
How this compares
$267 in reported general payments places this provider in the 55th percentile of 1,108 psychiatry providers in North Carolina.
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 |
|---|---|---|
| Trazodone Hcl | 299 | $8,247 |
| Aripiprazole | 142 | $8,123 |
| Duloxetine Hcl | 134 | $4,465 |
| Alprazolam | 644 | $4,263 |
| Bupropion XlBupropion Hcl | 157 | $3,793 |
| Lurasidone Hcl | 32 | $3,731 |
| Dextroamphetamine-Amphet ErDextroamphetamine/Amphetamine | 55 | $3,398 |
| Clonazepam | 236 | $2,650 |
| Venlafaxine Hcl ErVenlafaxine Hcl | 103 | $2,579 |
| Dextroamphetamine-AmphetamineDextroamphetamine/Amphetamine | 50 | $2,499 |
| Vilazodone Hcl | 15 | $2,334 |
| Divalproex Sodium ErDivalproex Sodium | 39 | $2,286 |
| Modafinil | 11 | $2,196 |
| Lamotrigine | 153 | $2,115 |
| Sertraline Hcl | 139 | $2,062 |
Paid to pharmacies, not to this prescriber.
Other psychiatry in Clemmons
- Craig ChepkeHuntersville$4.1M
- Mark ReynoldsDurham$3.2M
- James BarkerHickory$2.1M
- Brian FarahWinston Salem$605K
- Krishna TalluriMorrisville$591K
- Ramesh GihwalaGastonia$545K
- Keshavpal ReddyGreensboro$480K
- Robert MilletRaleigh$476K
- Steven SzaboDurham$360K
- David JoyeAlbemarle$280K
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.