L Knoll, MD
Urology · Nashville, TNNPI 1346206893
Payments from drug & device makers
Across 1,625 payments — averaging $1304.29 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Boston Scientific$2M
- Endo Pharmaceuticals Inc.$122K
- Endo USA, Inc.$6K
- Cook Biotech Incorporated$1K
- Coloplast$367
- Dendreon Pharmaceuticals LLC$338
- plus $2K from 25 others
Across 2 payments — averaging $7902.50 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.
- Cook Biotech Incorporated$16K
What the payments were for
- Consulting fees$60,9393%
- Speaking & faculty fees$1,894,50389%
- Travel & lodging$128,5576%
- Food & beverage$35,1772%
- Education$2870%
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 |
|---|---|---|
| Boston Scientific | 1,385 | $1,988,047 |
| Endo Pharmaceuticals Inc. | 132 | $121,871 |
| Endo USA, Inc. | 10 | $5,796 |
| Cook Biotech Incorporated | 2 | $1,379 |
| Coloplast | 5 | $367 |
| Dendreon Pharmaceuticals LLC | 17 | $338 |
| Astellas Pharma US Inc | 14 | $303 |
| Sumitomo Pharma America, Inc. | 12 | $231 |
| AbbVie(2 entities) | 7 | $106 |
| Cook Medical LLC | 1 | $98 |
| Blue Earth Diagnostics | 4 | $94 |
| Johnson & Johnson | 4 | $92 |
| Davol Inc. | 1 | $87 |
| Innovation Technologies Inc | 1 | $86 |
| Urocure LLC | 1 | $78 |
| Urogen Pharma, Inc. | 4 | $76 |
| Ferring Pharmaceuticals Inc. | 4 | $62 |
| Pfizer | 4 | $52 |
| Tolmar Pharmaceuticals, Inc. | 2 | $46 |
| Acell, Inc. | 2 | $43 |
| Urovant Sciences Inc | 2 | $33 |
| Myovant Sciences Inc. | 2 | $27 |
| Myriad Genetic Laboratories, Inc. | 1 | $20 |
| AstraZeneca | 1 | $19 |
| Sun Pharmaceutical Industries Inc. | 1 | $19 |
| Clovis Oncology, Inc. | 1 | $19 |
| Progenics Pharmaceuticals, Inc. | 1 | $17 |
| Verity Pharmaceuticals Inc. | 1 | $17 |
| Calyxo, Inc. | 1 | $16 |
| Medtronic | 1 | $14 |
| Axonics, Inc. | 1 | $13 |
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.
- AdVance XP$441,863
- AMS$321,874
- AMS 700 CXR RTE KIT$297,856
- GENERAL ERECTILE DYSFUNCTION$246,733
- TACTRA$188,184
- XIAFLEX$125,565
- ADVANCE$70,672
- GENERAL - THERAPIES$24,915
- AMS 700$5,557
- GENERAL MALE SUI$4,174
- AMS 800 Artificial Urinary Sphincter$3,028
- GENERAL PAIN MANAGEMENT$429
- ANGIOJET$162
- EDEX$149
- ALTIS$147
- AMBICOR$108
- SOLYX$106
How this compares
$2,119,463 in reported general payments places this provider in the 95th percentile of 276 urology 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 |
|---|---|---|
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 101 | $886 |
| Cephalexin | 113 | $759 |
| Tamsulosin Hcl | 16 | $197 |
Paid to pharmacies, not to this prescriber.
Other urology in Nashville
- Gautam JayramNashville$16.1M
- David PensonNashville$4.4M
- Roger DmochowskiNashville$792K
- Melissa KaufmanNashville$617K
- Amy LuckenbaughNashville$547K
- Sam ChangNashville$461K
- Kelvin MosesNashville$452K
- Ashley TapscottNashville$425K
- Raoul ConcepcionNashville$345K
- Benjamin DehnerNashville$165K
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.