Our Team

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Joe Kremer, MBA

Joe Kremer, MBA

CEO

Joe has more than 20 years of start-up experience including securing funding, creating and executing business strategy, and building and managing teams.

Joe Kremer, MBA

CEO

Daniel Butz, PhD

Daniel Butz, PhD

CSO & Co-Founder

Dr. Butz is Isomark's Chief Scientific Officer and also an assistant scientist at UW-Madison, focused on the early detection of diseases using metabolomic and isotopic approaches.

Daniel Butz, PhD

CSO & Co-Founder

John Brassil

John Brassil

Director of Engineering & Quality

John has 30 years of development and start-up experience, focused on innovative product creation in the medical device market.

John Brassil

Director of Engineering & Quality

Emily Breunig

Emily Breunig

Clinical Project Manager

Emily has experience in developing and managing human clinical trials with a focus on regulatory requirements and data analysis.

Emily Breunig

Clinical Project Manager

Stephanie Manthey

Stephanie Manthey

Office Manager & Executive Assistant

Along with handling day-to-day operations, Stephanie has experience in creating and managing study protocols and study site logistics. In addition, she manages Isomark’s marketing, IT, human resources, and accounting.

Stephanie Manthey

Office Manager & Executive Assistant