Trauma and Community Resilience Center | Meet our Team

Heidi Ellis, PhD, headshot

Heidi Ellis, PhD

Dr. Ellis is the Director of the Boston Children’s Hospital Trauma and Community Resilience Center (TCRC) and Associate Professor of Psychology in the Department of Psychiatry and Behavioral Sciences 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 — affects the health and development of youth. Dr. Ellis co-developed Trauma Systems Therapy (TST), led the adaptation of the model for refugees, and is currently developing multidisciplinary approaches to prevent extremist targeted violence.

Colleen Barrett Bixby headshot

Colleen Barrett Bixby, MPH

Mrs. Bixby is the program coordinator at the TCRC. 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 TCRC in 2009 as a public health intern to support the evaluation of Project SHIFA. She is interested in health disparities and how psychosocial research can be integrated with community-based work as part of the approach towards reducing them.

Emma Cardeli, PhD

Emma Cardeli, PhD, is a research associate and attending psychologist at Boston Children’s Hospital and an instructor of psychology at Harvard Medical School. Dr. Cardeli has over a decade of experience working with trauma-exposed children, adolescents, adults, and families from a variety of cultural backgrounds and in a myriad of clinical settings (outpatient and community-based clinics, inpatient psychiatry and inpatient medical settings, emergency services, court clinic, schools, and residential treatment centers). Dr. Cardeli provides training and consultation in trauma-informed, culturally responsive care to providers and agencies across the globe, building organizations’ capacity to provide specialized psychosocial services in a manner that’s congruent with community needs and norms. Her research focuses on identifying workforce development needs in trauma-informed care and distilling effective methodologies for strengthening healthcare systems to better meet the needs of underserved populations.

Seetha Davis headshot

Seetha Davis

Seetha Davis is a research assistant at the Trauma and Community Resilience Center at Boston Children’s Hospital. She graduated from Swarthmore College in 2019 with a BA in psychology and educational studies, and has previously investigated language services in children’s hospitals and preschooler health literacy. In addition to issues of (in)equity in language and literacy, Seetha’s interests include community- and systems-level interventions to support youth and families from vulnerable (e.g., refugee and immigrant) communities, pediatric integrated care, and sources of stress and resilience for pediatric populations. She hopes to care for and collaborate with communities to promote mental and physical well-being and advocate for pediatric health equity.

Osob Issa, MSW

Osob Issa, MSW

Osob Issa, MSW, is a clinical social worker and program coordinator at the TCRC. Ms. Issa has a master’s degree in social work from Boston University and an undergraduate 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 aspects of the work. Her passion is to make a difference in the mental health and well-being of immigrant and refugee families.

Alisa Miller, PhD, headshot

Alisa Miller, PhD

Alisa Miller, PhD, is a licensed psychologist and research associate at the Boston Children’s Hospital Trauma and Community Resilience Center (TCRC). Dr. Miller is an assistant in psychology in the Department of Psychiatry and Behavioral Sciences at Boston Children’s and an instructor in psychology at Harvard Medical School. Her expertise is in promoting the mental health and well-being of youth from communities that have experienced high levels of trauma, adversity, and stress, specifically refugee and immigrant youth in the U.S. and Canada. Dr. Miller is interested in increasing health equity for all youth in our society. She strives to be antiracist in all aspects of her personal and professional lives.

Luna Mulder, PsyD, headshot

Luna Mulder, PsyD

Dr. Luna Acharya Mulder is a psychologist at the Trauma and Community Resilience Center at Boston Children’s Hospital. She is an instructor of psychology in the Department of Psychiatry at Harvard Medical School. She has many years of experience providing trauma-informed, culturally responsive treatment to children suffering from mental illness and families who are victims of structural racism and poverty. She also has experience conducting psychological assessments to children with learning disabilities. Dr. Mulder is Bhutanese and brings intimate knowledge of Bhutanese culture, language, and the refugee experience to the TCRC. She joined the TCRC in 2012 as a consultant and is now a psychologist helping implement Trauma Systems Therapy for Refugees (TST-R) to resettled refugees and immigrants in the United States and Canada.

Jeffrey Winer, PhD, headshot

Jeffrey P. Winer, PhD

Jeffrey P. Winer, PhD, is an attending psychologist within the Trauma and Community Resilience Center at Boston Children’s Hospital and an instructor of psychology at Harvard Medical School. Dr. Winer’s work is primarily focused on developing, disseminating, and implementing culturally responsive and trauma-informed psychological interventions for youth and families of refugee and immigrant backgrounds. The values of equity, anti-racism, and structural systems change are at the center of this work. He is the recipient of a Thrasher Research Fund Early Career Award and is co-author of Mental Health Practice with Immigrant and Refugee Youth, published by the American Psychological Association in 2019. Outside of his work at Boston Children’s Hospital, he continues to work at the McLean Hospital 3East Adolescent DBT Partial Hospital Program and maintains a private practice. For more information, visit

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Saynab Yusuf

Saynab Yusuf moved to the United States in 2001 and has been living in Boston ever since. Having completed her undergraduate studies, Saynab hopes to pursue a master's degree in public administration. She enjoys volunteering and getting involved in the community as much as possible to gain knowledge and experience.