Adrian Wiestner
Hematology · Bethesda, MDNPI 1942075114
Payments from drug & device makers
What this record shows
Almost everything reported here is food and beverage — 100.0% of the total across 2 separate payments, which is the pattern of a clinician who attends manufacturer presentations rather than one with a consulting arrangement. Every reported general payment came from a single manufacturer, Genmab U.S., Inc.. That places this record below the midpoint for hematology clinicians in MD, where the typical reported total is $129.
Across 2 payments — averaging $27.35 each. Meals, travel, consulting and speaking fees, gifts and royalties reported by drug and device makers.
- Genmab U.S., Inc.$55
Across 9 payments — averaging $824,047 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.
- Pharmacyclics LLC, An Abbvie Company$4.7M
- AbbVie$2.2M
- Genmab A/s$530K
- Merck$70K
What the payments were for
- Food & beverage$55100%
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.
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 |
|---|---|---|
| Genmab U.S., Inc. | 2 | $55 |
How this compares
$55 in reported general payments places this provider in the 30th percentile of 28 hematology providers in Maryland.
Other hematology in Bethesda
- Bruce ChesonBethesda$557K
- Neal YoungBethesda$534
- James KochenderferBethesda$164
- Arun ShetBethesda$82
- Isaac McCoolBethesda$33
- Raul BraylanBethesda$29
- Hao-Wei WangBethesda$20
- Cynthia DunbarBethesda$15
- Swee Lay TheinBethesda$0
- Jerry SpivakBaltimore$98K
Where these figures come from
- Payments: CMS Open Payments, program years 2019–2025 (publication P06302026_06032026).
- Identity: NPPES NPI Registry, July 2026.