Karl Kreder, MD
Urology · Iowa City, IANPI 1487655700
Payments from drug & device makers
What this record shows
This record is dominated by food and beverage: $2,143 of the $3,348 with a category attached, or 64.0%. 8 manufacturers reported payments, led by Medtronic at 48.8% of the total. Reporting peaked in 2021 at $994 and has fallen 78.0% since, to $219 in 2025.
Across 31 payments — averaging $107.99 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Medtronic$2K
- Boston Scientific$934
- Johnson & Johnson$157
- Axonics, Inc.$152
- AbbVie$135
- Valencia Technologies Corporation$131
- plus $205 from 2 others
Across 39 payments — averaging $3780.26 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.
- Medtronic$147K
What the payments were for
- Consulting fees$39012%
- Travel & lodging$81524%
- Food & beverage$2,14364%
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 |
|---|---|---|
| Medtronic(2 entities) | 9 | $1,634 |
| Boston Scientific | 12 | $934 |
| Johnson & Johnson | 1 | $157 |
| Axonics, Inc. | 1 | $152 |
| AbbVie | 1 | $135 |
| Valencia Technologies Corporation | 2 | $131 |
| Laborie Medical Technologies Corp. | 1 | $112 |
| Urogen Pharma, Inc. | 4 | $93 |
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.
- INTERSTIM$732
- AMS$252
- Erleada$157
- Axonics$152
- Bulkamid$152
- BOTOX$135
- GENERAL ERECTILE DYSFUNCTION$122
- AMS 700 CXR RTE KIT$108
- eCoin Device Kit$104
How this compares
$3,348 in reported general payments places this provider in the 60th percentile of 114 urology providers in Iowa.
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 | 34 | $484 |
| Finasteride | 30 | $323 |
Paid to pharmacies, not to this prescriber.
Other urology in Iowa City
- Vignesh PackiamIowa City$112K
- Annah VollstedtIowa City$66K
- Bradley EricksonIowa City$65K
- Michael OdonnellIowa City$62K
- Alexandria HertzIowa City$53K
- John BuieIowa City$52K
- Charles SchlaepferIowa City$51K
- Christopher CooperIowa City$10K
- Amanda MyersIowa City$7K
- Luke BrunkhorstIowa City$6K
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.