Gregory McLennan, MD
Urology · Saint Louis, MONPI 1912160052
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $54,968 of the $88,967 with a category attached, or 61.8%. Calyxo, Inc. accounts for 65.1% of it on its own, with 59 other manufacturers making up the rest. 2025 is the largest year on record at $59,699, more than ten times the $2,999 reported in 2019. Among urology clinicians in MO 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 836 payments — averaging $106.42 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Calyxo, Inc.$58K
- Boston Scientific$7K
- AbbVie$4K
- Procept Biorobotics Corporation$3K
- Teleflex LLC$2K
- Intuitive Surgical$1K
- plus $13K from 54 others
What the payments were for
- Consulting fees$54,96862%
- Speaking & faculty fees$2,9753%
- Travel & lodging$11,75813%
- Food & beverage$19,01421%
- Education$2440%
- Gifts$90%
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.
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.
- CVAC Aspiration System$57,080
- LithoVue$3,200
- GENERAL VASCULAR ACCESS$2,800
- UroLift$2,042
- AquaBeam Robotic System$2,026
- Da Vinci Surgical System$937
- INTERSTIM$585
- N/A$550
- UroLift System$409
- AQUABEAM SYSTEM$326
- Lupron Depot$225
- TISSEEL$198
- Prolaris$131
- Cook Medical Flexor$123
- SpaceOAR VUE System - 10mL$122
- Soltive$117
- Optilume BPH Drug Coated Balloon Catheter$109
- AMS$101
How this compares
$88,967 in reported general payments places this provider in the 95th percentile of 250 urology providers in Missouri.
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 |
|---|---|---|
| MyrbetriqMirabegron | 315 | $218,928 |
| GemtesaVibegron | 175 | $127,742 |
| Mirabegron ErMirabegron | 21 | $13,671 |
| Tamsulosin Hcl | 798 | $9,504 |
| Testosterone | 24 | $3,150 |
| Finasteride | 242 | $2,729 |
| Potassium Citrate ErPotassium Citrate | 40 | $2,408 |
| Methenamine Hippurate | 40 | $2,060 |
| Oxybutynin Chloride ErOxybutynin Chloride | 99 | $1,887 |
| Solifenacin Succinate | 18 | $1,265 |
| NitrofurantoinNitrofurantoin Macrocrystal | 31 | $1,228 |
| Testosterone Cypionate | 75 | $1,139 |
| Hydrocodone-AcetaminophenHydrocodone/Acetaminophen | 266 | $1,111 |
| Celecoxib | 27 | $1,034 |
| Bethanechol Chloride | 16 | $1,030 |
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 |
|---|---|---|
| Astellas Pharma US IncMyrbetriq | $991 | $218,928315 claims |
| Sumitomo Pharma America, Inc.Gemtesa | $394 | $127,742175 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 250 urology providers in Missouri.
Other urology in Saint Louis
- Travis BullockSaint Louis$201K
- Michael JohnsonSaint Louis$160K
- Gurdarshan SandhuSaint Louis$101K
- Gerald AndrioleSaint Louis$64K
- Charles JonesSaint Louis$55K
- Meredith MetcalfSaint Louis$26K
- Maung Htein ThuSaint Louis$22K
- Alexander ChowSaint Louis$20K
- Jonathan WeeseSaint Louis$19K
- Woodson SmelserSaint Louis$19K
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.