Stefan Karos, MD
Urology · Leominster, MANPI 1376530378
Payments from drug & device makers
Across 25 payments — averaging $19.39 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Dentsply IH Inc.$208
- Astellas Pharma US Inc$178
- Endo Pharmaceuticals Inc.$32
- Coloplast$28
- 180 Medical, Inc.$22
- Merck$18
What the payments were for
- Food & beverage$33068%
- Education$15532%
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 |
|---|---|---|
| Dentsply IH Inc. | 16 | $208 |
| Astellas Pharma US Inc | 3 | $178 |
| Endo Pharmaceuticals Inc. | 2 | $32 |
| Coloplast | 2 | $28 |
| 180 Medical, Inc. | 1 | $22 |
| Merck | 1 | $18 |
How this compares
$485 in reported general payments places this provider in the 30th percentile of 327 urology providers in Massachusetts.
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 |
|---|---|---|
| Tamsulosin Hcl | 160 | $3,326 |
| Finasteride | 151 | $2,426 |
| Testosterone Cypionate | 12 | $366 |
| Oxybutynin Chloride | 25 | $360 |
| Doxazosin Mesylate | 23 | $356 |
| Ciprofloxacin Hcl | 40 | $167 |
| Oxycodone-AcetaminophenOxycodone Hcl/Acetaminophen | 23 | $127 |
Paid to pharmacies, not to this prescriber.
Other urology in Leominster
- Mitchell BambergerLeominster$18K
- Christopher CutieBoston$3.5M
- Henry MitchesonWatertown$1.6M
- Brian EisnerBoston$1.4M
- Mark PrestonBoston$1.2M
- David StaskinBrighton$807K
- Abraham MorgentalerChestnut Hill$522K
- Alejandro SanchezBoston$349K
- Liam HurleyNorth Andover$319K
- Adam KibelBoston$316K
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.