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Delivering Excellence

The Transplantation team is a part of the Chronic Disease Research Group, a division of the Hennepin Healthcare Research Institute (formerly known as the Minneapolis Medical Research Foundation). Brimming with talent and expertise, our team consists of dedicated individuals ready to fulfill your project objectives.



Jon J. Snyder, PhD

Ajay Israni, MD

Allyson Hart, MD


Ryan Follmer

Director, Information Technology

Caitlyn Nystedt, MPH, PMP

Program Director, Organ Donation and Transplantation Research

Mona Shater, MA

Marketing & Communications Director

David Zaun, MS

Senior Manager, Biostatistics

Transplantation Team

Yoon Son Ahn, MS


Katie Audette, MS

Project Manager

Chris Comstock

Full-Stack Software Engineer

Avery Cook, MPH, MSW

Project Coordinator

Tonya Eberhard

Communications Coordinator

Anna Gillette

Medical Editor

Peter Golden

Systems Administrator

Ahmed Habashy, PMP

Senior IT Project Manager

Patrick Johnson

Senior SQL Database Engineer 

Amy Ketterer

Senior Communications Coordinator

Sydney Kletter

Senior Administrative Assistant

Dan Larson

SQL Database Engineer 

Grace Lyden, PhD


Jonathan Miller, PhD, MPH


Joshua Pyke, PhD

IT Manager, DevOps

Cory Schaffhausen, PhD

Human Centered Design Engineer

David Schladt, MS


Eugene Shteyn, MS

Senior Software Engineer

Katie Siegert, MPH

Project Manager

Bryn Thompson, MPH

Senior Project Manager

Tim Weaver, MS

Data Systems Manager

Nicholas Wood, PhD


The Chronic Disease Research Group (CDRG) is a division of the Hennepin Healthcare Research Institute (EIN 1568208), located in Minneapolis, MN.