Klaus Mergener, MD
Gastroenterology · Edmonds, WANPI 1578537031
Payments from drug & device makers
What this record shows
This record is dominated by consulting fees: $156,409 of the $184,712 with a category attached, or 84.7%. Pentax Of America, Inc. accounts for 83.0% of it on its own, with 9 other manufacturers making up the rest. Reporting peaked in 2021 at $117,162 and has fallen 99.7% since, to $306 in 2025. Among gastroenterology clinicians in WA with any reported payments, this total sits in the top 5% — high for the specialty, which is a reason to read the composition above rather than the number alone.
Across 73 payments — averaging $2530.30 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Pentax Of America, Inc.$153K
- Boston Scientific$16K
- Ambu A/s$12K
- Sebela Pharmaceuticals Inc.$2K
- Cook Medical LLC$767
- GE HealthCare$229
- plus $115 from 4 others
What the payments were for
- Consulting fees$156,40985%
- Speaking & faculty fees$5,0003%
- Travel & lodging$21,55912%
- Food & beverage$1,5951%
- Ownership interest$1480%
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 |
|---|---|---|
| Pentax Of America, Inc. | 25 | $153,311 |
| Boston Scientific | 21 | $16,381 |
| Ambu A/s | 1 | $11,984 |
| Sebela Pharmaceuticals Inc. | 1 | $1,925 |
| Cook Medical LLC | 15 | $767 |
| GE HealthCare | 5 | $229 |
| Aimmune Therapeutics, Inc. | 2 | $42 |
| Takeda Pharmaceuticals U.S.A., Inc. | 1 | $31 |
| Salix Pharmaceuticals, A Division Of Bausch Health US, LLC | 1 | $24 |
| Phathom Pharmaceuticals, Inc. | 1 | $18 |
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.
- GENERAL - THERAPIES$15,430
- GENERAL HEMOSTASIS$500
- OTHER BSC PRODUCT NOT LISTED$148
- N/A$118
How this compares
$184,712 in reported general payments places this provider in the 95th percentile of 447 gastroenterology providers in Washington.
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.
Other gastroenterology in Edmonds
- Jinfeng GuoEdmonds$8K
- Michael ChioreanIssaquah$1.4M
- Kris KowdleySeattle$1.4M
- Venkatachala MohanBellevue$564K
- Scott LeeSeattle$220K
- John SunTacoma$219K
- Alyssa ChoiSeattle$102K
- Andrew RossSeattle$99K
- Jaime Aranda-MichelVancouver$82K
- Christian HornTacoma$65K
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.