Daniel Marchalik, MD
Urology · Washington, DCNPI 1588963029
Payments from drug & device makers
What this record shows
The money is spread across several categories — food and beverage (53.0%), travel and lodging and education — rather than concentrated in one kind of arrangement. 11 manufacturers reported payments, led by Cook Incorporated at 45.9% of the total. Reporting peaked in 2024 at $926 and has fallen 96.2% since, to $35 in 2025. That places this record below the midpoint for urology clinicians in DC, where the typical reported total is $1,957.
Across 22 payments — averaging $65.31 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Cook Incorporated$660
- Cook Medical LLC$448
- Johnson & Johnson$107
- Boston Scientific$83
- Coloplast$34
- Olympus America Inc.$27
- plus $77 from 5 others
What the payments were for
- Travel & lodging$66046%
- Food & beverage$76253%
- Education$151%
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.
| Company | Payments | Total |
|---|---|---|
| Cook Incorporated | 1 | $660 |
| Cook Medical LLC | 10 | $448 |
| Johnson & Johnson | 1 | $107 |
| Boston Scientific | 3 | $83 |
| Coloplast | 1 | $34 |
| Olympus America Inc. | 1 | $27 |
| Ferring Pharmaceuticals Inc. | 1 | $20 |
| Bayer | 1 | $16 |
| Pfizer | 1 | $15 |
| Endo Pharmaceuticals Inc. | 1 | $14 |
| Convatec 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.
How this compares
$1,437 in reported general payments places this provider in the 40th percentile of 47 urology providers in District of Columbia.
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 | 11 | $13,311 |
| Potassium Citrate ErPotassium Citrate | 21 | $2,316 |
| Tamsulosin Hcl | 126 | $1,990 |
| Oxybutynin Chloride ErOxybutynin Chloride | 13 | $158 |
| Sulfamethoxazole-TrimethoprimSulfamethoxazole/Trimethoprim | 13 | $65 |
Paid to pharmacies, not to this prescriber.
Other urology in Washington
- Armine SmithWashington$58K
- Nathan ShawWashington$54K
- Lambros StamatakisWashington$39K
- Patrick MufarrijWashington$31K
- Ryan HankinsWashington$29K
- Adam MetwalliWashington$27K
- Michael WhalenWashington$17K
- Pamela ColemanWashington$14K
- Leslie DeaneWashington$13K
- Jason EngelWashington$12K
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.