James Luther, MD
Nephrology · Nashville, TNNPI 1295882165
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $13,403 of the $20,412 with a category attached, or 65.7%. 4 manufacturers reported payments, led by Novo Nordisk at 57.1% of the total. Reporting peaked in 2024 at $12,692 and has fallen 78.2% since, to $2,769 in 2025. Among nephrology clinicians in TN with any reported payments, this total sits in the top 10% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 23 payments — averaging $887.47 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Novo Nordisk$12K
- Corcept Therapeutics$4K
- Vifor Pharma, Inc.$4K
- Bayer$1K
Across 1 payment — averaging $72,590 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.
- Novo Nordisk$73K
What the payments were for
- Consulting fees$13,40366%
- Speaking & faculty fees$3,43317%
- Travel & lodging$2,29311%
- Food & beverage$1,2846%
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 |
|---|---|---|
| Novo Nordisk | 8 | $11,662 |
| Corcept Therapeutics | 6 | $3,799 |
| Vifor Pharma, Inc. | 7 | $3,660 |
| Bayer | 2 | $1,291 |
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
$20,412 in reported general payments places this provider in the 90th 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 |
|---|---|---|
| FarxigaDapagliflozin Propanediol | 19 | $24,095 |
| Eplerenone | 41 | $7,047 |
| Olmesartan Medoxomil | 193 | $4,555 |
| Indapamide | 139 | $2,440 |
| Nifedipine ErNifedipine | 56 | $2,343 |
| Losartan Potassium | 143 | $2,193 |
| Clonidine | 23 | $2,025 |
| Chlorthalidone | 86 | $1,802 |
| Tamsulosin Hcl | 22 | $1,546 |
| Guanfacine Hcl | 41 | $1,507 |
| Amlodipine Besylate | 175 | $1,418 |
| Telmisartan | 30 | $1,138 |
| Valsartan | 11 | $1,029 |
| Spironolactone | 151 | $1,010 |
| Doxazosin Mesylate | 50 | $977 |
Paid to pharmacies, not to this prescriber.
Other nephrology in Nashville
- Jamie DwyerNashville$461K
- Volker HaaseNashville$123K
- Talat IkizlerNashville$93K
- Julia LewisNashville$87K
- Osama El ShamyNashville$87K
- Thomas GolperNashville$26K
- Anthony LangoneNashville$23K
- 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.