William Gammill, DO
Internal Medicine · Enterprise, ALNPI 1437199908
Payments from drug & device makers
Across 984 payments — averaging $13.62 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$2K
- GSK$1K
- Novo Nordisk$1K
- Johnson & Johnson$1K
- Lilly USA, LLC$1K
- AstraZeneca$923
- plus $6K from 43 others
What the payments were for
- Food & beverage$13,363100%
- Education$350%
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.
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
$13,397 in reported general payments places this provider in the 90th percentile of 1,533 internal medicine providers in Alabama.
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 |
|---|---|---|
| JardianceEmpagliflozin | 305 | $283,552 |
| TrulicityDulaglutide | 163 | $176,629 |
| MounjaroTirzepatide | 159 | $169,101 |
| EliquisApixaban | 156 | $115,913 |
| OzempicSemaglutide | 79 | $97,953 |
| Trelegy ElliptaFluticasone/Umeclidin/Vilanter | 110 | $94,707 |
| XareltoRivaroxaban | 118 | $91,282 |
| Synjardy XrEmpagliflozin/Metformin Hcl | 55 | $47,151 |
| VraylarCariprazine Hcl | 31 | $44,803 |
| LinzessLinaclotide | 58 | $41,762 |
| MyrbetriqMirabegron | 63 | $39,070 |
| RybelsusSemaglutide | 25 | $31,987 |
| FarxigaDapagliflozin Propanediol | 22 | $29,989 |
| Anoro ElliptaUmeclidinium Brm/Vilanterol Tr | 62 | $29,250 |
| Soliqua 100-33Insulin Glargine/Lixisenatide | 23 | $27,885 |
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 |
|---|---|---|
| Lilly USA, LLCTrulicity, Mounjaro | $1,001 | $345,730322 claims |
| Boehringer IngelheimJardiance, Synjardy Xr, Stiolto Respimat | $440 | $338,206376 claims |
| GSKTrelegy Ellipta, Anoro Ellipta, Breo Ellipta, Arexvy | $1,238 | $155,810246 claims |
| Novo NordiskOzempic, Rybelsus | $1,197 | $129,940104 claims |
| PfizerEliquis | $920 | $115,913156 claims |
| Johnson & JohnsonXarelto, Invokana | $1,093 | $111,670139 claims |
| AbbVieVraylar, Linzess | $1,892 | $86,56489 claims |
| MerckJanuvia, Janumet, Belsomra, Verquvo | $315 | $63,50795 claims |
| AstraZenecaFarxiga | $923 | $29,98922 claims |
| Sanofi-aventis U.S. LLCSoliqua 100-33 | $57 | $27,88523 claims |
| NovartisEntresto | $338 | $26,50435 claims |
| Kowa Pharmaceuticals America, Inc.Livalo | $57 | $8,45221 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 1,533 internal medicine providers in Alabama.
Other internal medicine in Enterprise
- Harry StuddardMobile$12.9M
- Almena FreeAnniston$12.7M
- Hayes WilliamsVestavia$10.4M
- David DeatkineBirmingham$8M
- James SullivanBirmingham$6M
- Ramy TomaBirmingham$5.1M
- Barry McLeanHomewood$4M
- William KirbyBirmingham$2.3M
- Saadat AnsariHuntsville$2.1M
- Gregory FlippoTrussville$1.6M
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.