Refugee Trauma and Resilience Center | Meet our Team

Heidi Ellis, PhD

Heidi EllisDr. Ellis is the Director of the Boston Children’s Hospital Center for Refugee Trauma and Resilience (CHCRTR) and Assistant Professor of Psychology in the Department of Psychiatry at Boston Children’s Hospital/Harvard Medical School. Dr. Ellis’ research and clinical work focus on how the social context—trauma, discrimination, culture, and social environmental stressors—effects the health and development of refugee youth. Dr. Ellis co-developed Trauma Systems Therapy with Dr. Saxe, and is the co-author of the TST book.



Molly A. Benson, PhD

Molly BensonDr. Benson is the Associate Director for Refugee Treatment and Services at the Refugee Trauma and Resilience Center at Boston Children’s Hospital. She provides oversight, training, supervision, and support for program activities focused on the development and dissemination of treatment interventions and resources for refugee children and families. She is licensed clinical psychologist who has experience providing evaluation and treatment to children and adolescents, including those who are refugees and youth seeking asylum in US. For several years she provided clinical services and supervision through the Psychosocial Treatment Program at Boston Children’s Hospital and currently she maintains a small private practice.



Alisa Miller, Ph.D.

Alisa MillerDr. Miller is a Research Associate at the Refugee Trauma and Resilience Center and Assistant in Psychology in the Department of Psychiatry at Boston Children’s Hospital and an Instructor in Psychology at Harvard Medical School. Her research interests are trauma exposure, PTSD, identity development, family cohesion/conflict and the effects these have on refugee and immigrant family and community functioning. She is interested in reducing mental health disparities among refugee and immigrant groups and the healthy adjustment of youth during and after resettlement.

Saida Abdi, MSW, LCSW

Saida Abdi, LICSW, MSW., M.A., is the Director of Community Relations, a clinical social worker, and expert in refugee trauma and resilience. She holds a Master’s degree in Social Work from Boston University and another Master’s degree in Communications from Carleton University and is currently pursuing her PhD at Boston University. She is a native of Somalia and a former refugee herself. Ms. Abdi has worked for more than 20 years in the area of refugee youth and families, developing school-based programs to support adjustment of refugee youth in resettlement and community-based research and intervention. For the past 8 years, she has worked at the Boston Children’s Hospital Refugee Trauma and Resilience Center as a part of SAMHSA funded project to develop and implement refugee mental health interventions. She has organized trainings on the issue of promoting resilience and reducing risk behaviors among refugee youth for educators, policy-makers, clinicians and community leaders. She is trained in Trauma System’s Therapy and is an expert in building culturally responsive interventions.

Luna Mulder, Psy.D.

Luna Mulder Dr. Luna Acharya Mulder has more than a decade of experience working with children and families with severe social, emotional, and learning disabilities. She has provided individual and family therapy and conducted psychological assessments to children suffering from mental illness. Dr. Mulder is Bhutanese and, in addition to training and experience in working with traumatized children, brings intimate knowledge of Bhutanese culture, language, and the refugee experience. She joined the Refugee Trauma and Resilience Center (RTRC) at Boston Children’s Hospital in 2012 as a consultant and is now a part-time psychologist helping implement Trauma Systems Therapy for Refugees (TST-R).



Colleen Barrett Bixby, MPH

Colleen BarrettMrs. Bixby is the Program Coordinator at the CHCRTR. She has a background in cultural anthropology, as well as a master's degree in public health with a concentration in international health. Bixby first came to the CHCRTR in 2009 as a public health intern to support the evaluation of Project SHIFA. She is interested in health disparities among refugee populations and how psychosocial research can be integrated with community-based work as part of the approach towards reducing them.




Emma Cardeli, Ph.D.

Emma CardeliEmma Cardeli, Ph.D. is a Research Associate at the Refugee Trauma and Resilience Center (RTRC) at Boston Children's Hospital, an Instructor in Psychology at Harvard Medical School, and a licensed clinical psychologist with years of experience working with traumatized children and families from culturally diverse backgrounds. Her research interests include understanding factors that influence the expression of violence in addition to examining cross-cultural aspects of trauma exposure, PTSD, resettlement, and identity development.




Osob Issa, MSW

Osob IssaOsob Issa, MSW, is a clinical social worker and program coordinator at the RTRC. Ms. Issa has a master’s degree in social work from Boston University, and an under-graduate degree in psychology with a minor in women’s studies. She has first joined the team as a social work intern in 2008, and has since become increasingly involved in the research and clinical aspect of the work. Her passion is to make a difference in the mental health, and well-being of immigrant and refugee families.

Emily Hahn

emily-hahn-refugee-programEmily Hahn is a Research Assistant at the Refugee Trauma and Resilience Center. She graduated from Tufts University in 2016 with B.A. in Community Health and Spanish, and has previously worked in Public Health research and education. Her interests include community-based participatory research, cross-cultural mental health, and eliminating health inequities. She is particularly interested in using community-based research to improve health outcomes in refugee populations.




Sarah Gillespie

Sarah Gillespie is a Research Assistant at the Refugee Trauma and Resilience Center. She graduated from Harvard University in 2017 with a degree in Cognitive Neuroscience and a minor in Human Evolutionary Biology. She is interested in designing, disseminating, and evaluating evidence based practices cross-culturally and globally to reduce the burden of mental illness on marginalized communities.




Saynab Yusuf

Saynab Yusuf moved to the United States 13 years ago and has been living in Boston ever since, where she is currently a college student studying Human Services. Saynab hopes to work in the field of Public Health, and is excited to be interning here in the Boston Children's Hospital Psychiatry Department. She enjoys volunteering and getting involved in the community as much as possible to gain knowledge and experience.