Osama El Shamy
Nephrology · Nashville, TNNPI 1033520382
Payments from drug & device makers
What this record shows
The money is spread across several categories — speaking fees (32.6%), consulting fees and travel and lodging — rather than concentrated in one kind of arrangement. 15 manufacturers reported payments, led by Nxstage Medical, Inc. at 37.0% of the total. 2025 is the largest year on record at $58,872, more than ten times the $237 reported in 2019. Among nephrology clinicians in TN 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 140 payments — averaging $622.29 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Nxstage Medical, Inc.$32K
- Vantive US Healthcare LLC$23K
- Outset Medical Inc$13K
- Akebia Therapeutics Inc$11K
- Fresenius USA Marketing, Inc.$5K
- Baxter Healthcare$1K
- plus $2K from 9 others
What the payments were for
- Consulting fees$25,35929%
- Speaking & faculty fees$28,42533%
- Travel & lodging$14,44117%
- Food & beverage$4,5525%
- Education$14,09616%
- Entertainment$2480%
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 |
|---|---|---|
| Nxstage Medical, Inc. | 55 | $32,252 |
| Vantive US Healthcare LLC | 32 | $22,662 |
| Outset Medical Inc | 4 | $12,610 |
| Akebia Therapeutics Inc | 13 | $11,294 |
| Fresenius USA Marketing, Inc. | 13 | $5,492 |
| Baxter Healthcare | 2 | $1,253 |
| Mozarc Medical US LLC | 5 | $424 |
| Medtronic | 2 | $354 |
| Otsuka America Pharmaceutical, Inc. | 3 | $248 |
| Quanta Dialysis Technologies Inc | 1 | $199 |
| AstraZeneca(2 entities) | 4 | $196 |
| Amgen | 2 | $53 |
| Ardelyx, Inc. | 2 | $43 |
| Mallinckrodt Hospital Products Inc. | 1 | $20 |
| Vifor Pharma, Inc. | 1 | $20 |
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.
- NXSTAGE SYSTEM ONE$31,727
- Renal - Acute$11,511
- Vafseo$10,953
- Renal - Chronic$7,301
- Renal - PD$4,733
- Argyle$612
- PUREFLOW SL$236
- LIBERTY SELECT CYCLER$235
- JYNARQUE$235
- SC+ Hemodialysis Machine$199
How this compares
$87,121 in reported general payments places this provider in the 95th percentile of 229 nephrology providers in Tennessee.
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 | 56 | $52,755 |
| Sevelamer Carbonate | 22 | $7,187 |
| Calcium Acetate | 15 | $1,322 |
| Nifedipine ErNifedipine | 39 | $791 |
| Bumetanide | 11 | $782 |
| Chlorthalidone | 38 | $649 |
| Losartan Potassium | 92 | $593 |
| Lisinopril | 21 | $242 |
| Hydralazine Hcl | 19 | $240 |
| Furosemide | 32 | $186 |
| Carvedilol | 27 | $162 |
| Amlodipine Besylate | 38 | $150 |
| Hydrochlorothiazide | 19 | $141 |
| Gabapentin | 11 | $133 |
| Labetalol Hcl | 11 | $112 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Nashville
- Jamie DwyerNashville$461K
- Volker HaaseNashville$123K
- Talat IkizlerNashville$93K
- Julia LewisNashville$87K
- Thomas GolperNashville$26K
- Anthony LangoneNashville$23K
- James LutherNashville$20K
- Jeffrey HymesNashville$19K
- Roy ZentNashville$17K
- Alfred GeorgeNashville$16K
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.