William Giles, MD
Internal Medicine · Gun Barrel City, TXNPI 1386662419
Payments from drug & device makers
Across 187 payments — averaging $19.09 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Pfizer$443
- AstraZeneca$434
- Lilly USA, LLC$432
- GSK$372
- Novo Nordisk$281
- Amgen$257
- plus $1K from 20 others
What the payments were for
- Food & beverage$3,47597%
- Education$963%
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 |
|---|---|---|
| Pfizer | 16 | $443 |
| AstraZeneca | 22 | $434 |
| Lilly USA, LLC | 26 | $432 |
| GSK | 19 | $372 |
| Novo Nordisk | 17 | $281 |
| Amgen | 15 | $257 |
| Boehringer Ingelheim | 12 | $244 |
| Otsuka America Pharmaceutical, Inc. | 7 | $164 |
| Exact Sciences | 10 | $144 |
| AbbVie | 7 | $124 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 6 | $113 |
| Dexcom, Inc. | 6 | $110 |
| Mylan Specialty L.p. | 6 | $93 |
| Ardelyx, Inc. | 2 | $54 |
| Viatris Specialty LLC | 2 | $45 |
| Axsome Therapeutics, Inc. | 2 | $42 |
| Johnson & Johnson | 2 | $39 |
| Antares Pharma, Inc. | 2 | $38 |
| Teva Pharmaceuticals USA, Inc. | 1 | $25 |
| Bayer | 1 | $23 |
| Tactile Systems Technology Inc | 1 | $21 |
| Amneal Pharmaceuticals LLC | 1 | $17 |
| Philips North America LLC | 1 | $15 |
| ITI, Inc. (d/b/a Intra-cellular Therapies, Inc.) | 1 | $15 |
| Hikma Pharmaceuticals USA | 1 | $13 |
| Novartis | 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.
- PREVNAR 20$102
- COMIRNATY$102
- ABRYSVO$102
How this compares
$3,570 in reported general payments places this provider in the 85th percentile of 7,675 internal medicine 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 |
|---|---|---|
| OzempicSemaglutide | 179 | $251,272 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 127 | $114,560 |
| EliquisApixaban | 69 | $85,158 |
| MounjaroTirzepatide | 64 | $70,922 |
| TrulicityDulaglutide | 52 | $69,361 |
| XareltoRivaroxaban | 48 | $62,838 |
| JanuviaSitagliptin Phosphate | 36 | $52,882 |
| JardianceEmpagliflozin | 36 | $47,411 |
| Toujeo SolostarInsulin Glargine,hum.Rec.Anlog | 45 | $41,997 |
| Tresiba Flextouch U-200Insulin Degludec | 21 | $34,355 |
| Tresiba Flextouch U-100Insulin Degludec | 32 | $27,858 |
| MyrbetriqMirabegron | 25 | $20,802 |
| JanumetSitagliptin Phos/Metformin Hcl | 12 | $20,418 |
| SymbicortBudesonide/Formoterol Fumarate | 57 | $20,204 |
| Anoro ElliptaUmeclidinium Brm/Vilanterol Tr | 33 | $18,808 |
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 |
|---|---|---|
| Novo NordiskOzempic | $281 | $251,272179 claims |
| Lilly USA, LLCMounjaro, Trulicity | $432 | $140,283116 claims |
| GSKTrelegy Ellipta, Anoro Ellipta | $372 | $133,368160 claims |
| PfizerEliquis | $443 | $85,15869 claims |
| Johnson & JohnsonXarelto | $39 | $62,83848 claims |
| Boehringer IngelheimJardiance, Spiriva Respimat | $244 | $56,51352 claims |
| AstraZenecaSymbicort | $434 | $20,20457 claims |
| Amneal Pharmaceuticals LLCLevothyroxine Sodium | $17 | $5,410546 claims |
| AbbVieSynthroid | $124 | $2,84546 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 85th percentile of 7,675 internal medicine providers in Texas.
Other internal medicine in Gun Barrel City
- Jan BurgerHouston$47.3M
- Nitin JainHouston$33.2M
- Muhammad IrfanTomball$30.6M
- Aung NaingHouston$30.6M
- Robert BassSan Antonio$25.6M
- Preetesh JainHouston$19.5M
- Paolo StratiHouston$19.2M
- Hernan SalazarSan Antonio$18.5M
- Nicholas ShortHouston$17.6M
- Salma SaigerMesquite$16.1M
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.