Mr. Gempeler is heavily involved in numerous legal organizations and activities.
- MSBA Criminal Law Section council member – 2014-present
- MSBA Solo/Small Firm Section elected council member – 2015-present
- Expungement Task Force – group consisting of public and private attorneys who discuss latest trends and work towards effecting change through group policies and actions
- Richard T. Oakes American Inn of Court – 2015-present
- Captain of the North Star Criminal Defense softball team in the HCBA co-ed softball league – 2015-present