James Leenstra, MD
Radiation Oncology · Rochester, MNNPI 1174593982
Payments from drug & device makers
No general payments reported
No drug or device maker reported general payments to this provider for 2019–2025. That is a common and unremarkable result.
How this compares
$0 in reported general payments places this provider in the 20th percentile of 128 radiation oncology providers in Minnesota.
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 | 42 | $274 |
| Dexamethasone | 13 | $93 |
Paid to pharmacies, not to this prescriber.
Other radiation oncology in Rochester
- Kenneth MerrellRochester$2M
- Jann SarkariaRochester$1.2M
- Ryan PhillipsRochester$706K
- Dawn OwenRochester$408K
- Aurelie GarantRochester$377K
- Bryan TraughberRochester$247K
- Mark WaddleRochester$225K
- Aadel ChaudhuriRochester$206K
- Bradley StishRochester$195K
- Nadia LaackRochester$92K
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.