Alexandra Ortega, MPH, MCHES®

Executive Director

Mrs. Ortega joined the International Panel Physicians Association in May 2014. Prior to becoming the Executive Director of IPPA, Alexandra worked as a program manager at medium and high-volume Panel Physician sites in Ciudad Juarez and Mexico City, Mexico. She holds a Bachelor’s degree in International Relations and Digital Media Based Imaging from the University of Southern California in Los Angeles and a Master of Public Health degree from the University of Texas at Houston School of Public Health. Her primary focus is in Global Health, with concentrations in Epidemiology and Leadership. Alexandra has experience in qualitative behavioral research, field epidemiology methods, strategic planning and program management.



Nathan Bertelsen, M.D., CTropMed®

Director of Education

Nathan Bertelsen, M.D., is a practicing physician in internal medicine and Associate Professor of Medicine (GIM) at University of Minnesota Medical Center in Minneapolis, USA, and a course director in migrant and refugee health in the Mediterranean at the University of Barcelona Institute for Global Health. He completed residency training in internal medicine and primary care at New York Presbyterian Hospital/Weill Cornell Medical Center, his M.D. from University of Minnesota Medical School, a B.A. in government/international relations from Georgetown University, and a graduate certificate in global mental health from Harvard University. From 2010-2019, he was a clinician educator and clerkship director at New York University School of Medicine and saw patients at Bellevue Hospital Center in New York City, USA. During his time at NYU, he served four years as Director of Primary Care for the Bellevue/NYU Program for Survivors of Torture, followed by four years in Istanbul, Turkey, serving as a visiting professor and founding director of a clinical skills and communication training program at Koç University School of Medicine. While in Turkey, he also spent two years as Adviser for Research and Training for Doctors Without Borders (MSF) in Istanbul working with Syrian refugee families, and taught MPH courses in migrant and refugee health in the Mediterranean for three years at the NYU campus in Florence, Italy. In Costa Rica, since 2012 he has served on the core faculty and now on the Board of Directors of the Central American Healthcare Initiative (CAHI) at INCAE Business School, which has trained over 100 health professionals from six Central American countries in health management and community health. Last year, he relocated to Barcelona to develop an implementation plan for medical training in tropical medicine, where he teaches medical and public health students in migrant and refugee health. His areas of interest include communication skills, culture and health, and resilience factors in migration.