John Kowalczyk, DO
Urology · Los Angeles, CANPI 1548254089
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $15,590 of the $18,969 with a category attached, or 82.2%. It is spread thinly across 60 manufacturers, the largest accounting for just 20.0% — the pattern of someone who eats at a lot of different presentations.
Across 566 payments — averaging $33.51 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Viiv Healthcare Company$4K
- Coloplast$2K
- Teleflex LLC$2K
- AbbVie$1K
- Neotract Inc.$962
- Pfizer$761
- plus $7K from 54 others
Across 190 payments — averaging $9566.47 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.
- GSK$919K
- IBSA Institut Biochimique SA$359K
- Urovant Sciences Inc$187K
- Pfizer$93K
- Janssen Research & Development, LLC$77K
- Sumitomo Pharma America, Inc.$39K
- plus $143K from 8 others
What the payments were for
- Consulting fees$1001%
- Speaking & faculty fees$3502%
- Travel & lodging$2,38513%
- Food & beverage$15,59082%
- Education$5443%
Most of this is food and beverage — typically meals provided during product presentations at a clinic or hospital. Nationally that is the single largest category of reported payments by count.
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.
How this compares
$18,969 in reported general payments places this provider in the 85th percentile of 1,324 urology providers in California.
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 |
|---|---|---|
| GemtesaVibegron | 273 | $179,396 |
| MyrbetriqMirabegron | 192 | $114,270 |
| Dutasteride | 580 | $17,410 |
| Tamsulosin Hcl | 1,297 | $17,102 |
| Bethanechol Chloride | 106 | $9,096 |
| Finasteride | 832 | $8,034 |
| Methenamine Hippurate | 85 | $6,313 |
| Tadalafil | 57 | $4,978 |
| CialisTadalafil | 14 | $3,958 |
| Alfuzosin Hcl ErAlfuzosin Hcl | 140 | $2,997 |
| Tolterodine Tartrate ErTolterodine Tartrate | 37 | $2,742 |
| PremarinEstrogens, Conjugated | 11 | $2,159 |
| Doxazosin Mesylate | 193 | $2,150 |
| Bicalutamide | 62 | $1,992 |
| Oxybutynin Chloride ErOxybutynin Chloride | 91 | $1,690 |
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 |
|---|---|---|
| Sumitomo Pharma America, Inc.Gemtesa | $580 | $179,396273 claims |
| Astellas Pharma US IncMyrbetriq | $719 | $114,270192 claims |
| PfizerPremarin | $761 | $2,15911 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 85th percentile of 1,324 urology providers in California.
Other urology in Los Angeles
- Arie BelldegrunLos Angeles$1.8M
- Mihir DesaiLos Angeles$1.5M
- Stuart HoldenLos Angeles$1.1M
- William AronsonLos Angeles$540K
- Amir LebastchiLos Angeles$478K
- Nazy ZomorodianLos Angeles$309K
- Jeffrey Loh-DoyleLos Angeles$308K
- Siamak DaneshmandLos Angeles$306K
- Karim ChamieLos Angeles$291K
- Brian ShuchLos Angeles$166K
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.