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Our Galvanized Task Force

SRTR Directors, Senior Staff, and Project Team

SRTR is administered by the Chronic Disease Research Group of the Hennepin Healthcare Research Institute in Minneapolis, Minnesota. Our leadership team is made up of Directors and SRTR Senior Staff members who are experts in their subfields of transplantation. In addition, our support team is made up of dedicated individuals who work diligently to provide the best information possible to all of our stakeholders.

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Jon Snyder, PhD, MS Director
Ajay Israni, MD, MS Deputy Director/Medical Director
Ryutaro (Ryo) Hirose, MD Surgical Director


Senior Staff

David Axelrod, MD, MBA, FACS Senior Staff for Medical Informatics
Monica Colvin, MD Senior Staff for Heart Transplantation
Sommer Gentry, PhD Senior Staff for Simulated Allocation Modeling
Allyson Hart, MD, MS Senior Staff for Patient and Family Affairs
Simon Horslen, MB, ChB, FRCPCH, FAASLD, FAST Senior Staff for Intestine, Liver, Pediatrics
Lawrence Hunsicker, MD, PhD Senior Staff for Special Studies
Raja Kandaswamy, MD Senior Staff for Pancreas Transplantation
W. Ray Kim, MD Senior Staff for Liver Transplantation
John (Jack) Lake, MD Senior Staff for Liver Transplantation
Krista Lentine, MD, PhD Senior Staff for Kidney & Living Donation
Rajalingam Raja, PhD, FRCPath, D(ABHI) Senior Staff for Histocompatibility
Mark Schnitzler, PhD Senior Staff for Economics
Dorry Segev, MD, PhD Senior Staff for Special Studies
Jodi Smith, MD, MPH Senior Staff for Pediatric Transplantation
Peter Stock, MD, PhD Senior Staff for Kidney and Pancreas  
Maryam Valapour, MD, MPP Senior Staff for Lung Transplantation


Project Team

Yoon Son Ahn, MS Biostatistician
Katherine Audette, MS Project Manager
Chris Comstock Full-Stack Software Engineer
Avery Cook, MPH, MSW Project Coordinator
Tonya Eberhard Communications Coordinator
Ryan Follmer IT Director
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 Biostatistician
Warren McKinney, PhD Health Equity and Disparities Researcher
Jonathan Miller, PhD, MPH Biostatistician
Caitlyn Nystedt, MPH, PMP Program Director, Organ Donation and Transplantation Research
Hilford Ponnie Systems Administrator
Joshua Pyke, PhD IT Manager, DevOps
Cory Schaffhausen, PhD Human Centered Design Engineer
David Schladt, MS Biostatistician
Mona Shater, MA Marketing and Communications Director
C. Daniel Sheets Senior Systems Administrator
Eugene Shteyn, MS Senior Software Engineer
Katie Siegert, MPH Project Manager
Bryn Thompson, MPH Senior Project Manager
Tim Weaver, MS Biostatistician
Nicholas Wood, PhD Biostatistician
David Zaun, MS Senior Manager of Biostatistics