Walter Carnahan, DO
Family Medicine · Southaven, MSNPI 1174501449
Payments from drug & device makers
What this record shows
This record is dominated by speaking fees: $104,278 of the $145,716 with a category attached, or 71.6%. 9 manufacturers reported payments, led by AbbVie at 34.7% of the total. Reporting peaked in 2021 at $48,818 and has fallen 87.6% since, to $6,046 in 2025. Among family medicine clinicians in MS with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 248 payments — averaging $587.56 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- AbbVie$51K
- Lilly USA, LLC$32K
- Teva Pharmaceuticals USA, Inc.$25K
- Biohaven Pharmaceuticals, Inc.$15K
- Amgen$13K
- Impel Pharmaceuticals Inc.$5K
- plus $5K from 3 others
What the payments were for
- Consulting fees$25,69318%
- Speaking & faculty fees$104,27872%
- Grants$420%
- Travel & lodging$9,8477%
- Food & beverage$5,7984%
- Education$590%
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) | 59 | $50,582 |
| Lilly USA, LLC | 91 | $31,855 |
| Teva Pharmaceuticals USA, Inc. | 33 | $25,240 |
| Biohaven Pharmaceuticals, Inc. | 20 | $14,774 |
| Amgen | 28 | $13,298 |
| Impel Pharmaceuticals Inc. | 7 | $5,214 |
| Biohaven Pharmaceutical Holding Company Ltd. | 8 | $4,651 |
| Pfizer | 1 | $90 |
| Currax Pharmaceuticals LLC | 1 | $12 |
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
$145,716 in reported general payments places this provider in the 95th percentile of 971 family medicine providers in Mississippi.
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 | 23 | $38,500 |
| JanuviaSitagliptin Phosphate | 30 | $36,701 |
| Aimovig AutoinjectorErenumab-Aooe | 39 | $29,998 |
| EliquisApixaban | 30 | $28,483 |
| Emgality PenGalcanezumab-Gnlm | 31 | $24,746 |
| JardianceEmpagliflozin | 20 | $23,075 |
| RybelsusSemaglutide | 14 | $20,672 |
| MounjaroTirzepatide | 17 | $17,481 |
| UbrelvyUbrogepant | 14 | $15,121 |
| XareltoRivaroxaban | 11 | $9,650 |
| Dexlansoprazole DrDexlansoprazole | 13 | $6,515 |
| SynthroidLevothyroxine Sodium | 51 | $5,996 |
| Ezetimibe | 156 | $4,447 |
| SymbicortBudesonide/Formoterol Fumarate | 17 | $3,857 |
| Fenofibrate | 110 | $2,977 |
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 |
|---|---|---|
| PfizerEliquis | $90 | $28,48330 claims |
| AbbVieUbrelvy, Synthroid | $50,582 | $21,11765 claims |
| Lilly USA, LLCMounjaro | $31,855 | $17,48117 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 95th percentile of 971 family medicine providers in Mississippi.
Other family medicine in Southaven
- Robert SkinnerSouthaven$9K
- Russell CarlisleWesson$1.6M
- Keith StokesLexington$654K
- Karen WhitneyWhitfield$117K
- Dava ClevelandJackson$100K
- Andrea PhillipsJackson$96K
- Kristi TrimmRidgeland$34K
- Tana CooperBiloxi$25K
- Delora DenneyPicayune$24K
- Randall HulingOlive Branch$23K
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.