William Mast
Family · Greenville, TXNPI 1659089811
Payments from drug & device makers
Across 394 payments — averaging $28.14 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$2K
- LEO Pharma Inc.$1K
- Dermavant Sciences, Inc.$1K
- E.r. Squibb & Sons, L.L.C.$1K
- Lilly USA, LLC$914
- Johnson & Johnson$711
- plus $4K from 17 others
What the payments were for
- Consulting fees$1,16811%
- Speaking & faculty fees$1001%
- Food & beverage$9,36985%
- Education$4504%
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 | 71 | $1,510 |
| LEO Pharma Inc. | 13 | $1,344 |
| Dermavant Sciences, Inc. | 70 | $1,235 |
| E.r. Squibb & Sons, L.L.C. | 6 | $1,123 |
| Lilly USA, LLC | 29 | $914 |
| Johnson & Johnson | 20 | $711 |
| Regeneron Healthcare Solutions, Inc. | 25 | $669 |
| Sanofi | 34 | $591 |
| UCB, Inc. | 18 | $570 |
| Sun Pharmaceutical Industries Inc. | 21 | $464 |
| Arcutis Biotherapeutics, Inc. | 36 | $384 |
| Journey Medical Corporation | 4 | $368 |
| Ortho Dermatologics, A Division Of Bausch Health US, LLC | 4 | $259 |
| Galderma Laboratories, L.p. | 6 | $196 |
| Amgen | 13 | $180 |
| Novartis | 6 | $150 |
| EPI Health, LLC | 1 | $100 |
| Eli Lilly | 1 | $99 |
| Organon | 9 | $92 |
| Incyte Corporation | 3 | $67 |
| Boehringer Ingelheim | 1 | $26 |
| Almirall LLC | 1 | $19 |
| Mayne Pharma Commercial LLC | 2 | $16 |
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
$11,087 in reported general payments places this provider in the 95th percentile of 15,456 family providers in Texas.
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 |
|---|---|---|
| Skyrizi PenRisankizumab-Rzaa | 18 | $365,448 |
| Dupixent PenDupilumab | 63 | $286,881 |
| Fluorouracil | 120 | $9,497 |
| Clobetasol Propionate | 151 | $6,630 |
| Doxycycline Hyclate | 167 | $5,292 |
| Ketoconazole | 312 | $4,525 |
| Triamcinolone Acetonide | 254 | $2,092 |
| Clindamycin Phosphate | 65 | $2,013 |
| Ammonium Lactate | 55 | $1,668 |
| Metronidazole | 22 | $1,607 |
| Hydrocortisone | 63 | $1,057 |
| Ciclopirox | 23 | $789 |
| Mupirocin | 91 | $787 |
| Desonide | 23 | $618 |
| Clotrimazole-BetamethasoneClotrimazole/Betamethasone Dip | 27 | $547 |
Paid to pharmacies, not to this prescriber.
Other family in Greenville
- Lashonda CraneHouston$3.4M
- David WeirDallas$959K
- Luba YammineHouston$479K
- Robin BeachHouston$428K
- Nirupama JeromeAustin$418K
- April LopezMcAllen$417K
- Linda MercadoHouston$211K
- Sarah AguilarHouston$199K
- Sie ThomasDallas$197K
- Anna CastroSan Antonio$184K
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.