Start of Main Content
Program Leadership
Leadership Team
John Zambrano, MD, MHS – Medical Director of Quality & Implementation Research, Performance Excellence & Population HealthRodney VanDerwarker, MPH – VP, Primary Care
Chris Andreoli, MD – Chief Operating Officer & Chief Transformation Officer
Tom Isaac, MD, MBA, MPH – Executive Medical Director, Chief Quality Officer
Jenny Czajkowski, MS – Sr. Director, Performance Excellence & Population Health
Kelsey Harrington, MHA – Project Manager, Performance Excellence & Population Health
Dr. John Zambrano, MD, MPH is a primary care internist trained in public health and health policy research methods. Prior to medical school and residency, he worked at the RAND Corporation where he focused on health services research, policy evaluation and implementation. His non-clinical work focuses on improving primary care delivery models and applying research methodologies to inform primary care transformation and innovation. He has experience in predictive modeling, qualitative research methods, quality improvement research methods and implementation science. His current work is focused on applying implementation science to evaluate and spread effective organizational and behavioral change strategies.