Talat Ikizler, MD
Nephrology · Nashville, TNNPI 1790869808
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $58,431 of the $92,558 with a category attached, or 63.1%. Fresenius Kabi USA, LLC accounts for 99.7% of it on its own, with 2 other manufacturers making up the rest. Reporting peaked in 2020 at $40,048 and has fallen 86.5% since, to $5,410 in 2024. 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 32 payments — averaging $2892.45 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Fresenius Kabi USA, LLC$92K
- Fresenius USA Marketing, Inc.$249
- Vifor Pharma, Inc.$40
Across 5 payments — averaging $692.65 each. Payments tied to a research study. These frequently flow through the physician to a hospital or research institution rather than to the physician personally.
- CSL Behring$3K
What the payments were for
- Consulting fees$58,43163%
- Speaking & faculty fees$9,83111%
- Travel & lodging$24,25626%
- Education$400%
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 |
|---|---|---|
| Fresenius Kabi USA, LLC | 30 | $92,269 |
| Fresenius USA Marketing, Inc. | 1 | $249 |
| Vifor Pharma, Inc. | 1 | $40 |
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
$92,558 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 |
|---|---|---|
| Losartan Potassium | 17 | $88 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Nashville
- Jamie DwyerNashville$461K
- Volker HaaseNashville$123K
- Julia LewisNashville$87K
- Osama El ShamyNashville$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.