About Us
Our Team
Meet Our Team
Dr. Marissa N. Coleman is a bilingual licensed clinical psychologist whose practice is directly influenced by her work with torture survivors in El Salvador. Dr. Coleman’s specialty includes culturally grounded approaches to trauma recovery and psychological well-being. She views challenges from multiple perspectives, and honors the cultures of each individual and system with whom she works. She enjoys enjoys reggae music, being by water, and traveling with her family.
Dr. Marissa Coleman
Dr. Diane Flannery holds a Ph.D. in Organizational Psychology. She is a serial social entrepreneur passionate about creating change through social enterprise and innovation. Dr. Flannery has over 30 years of leadership experience domestically and internationally and has done work in Cape Town, South Africa, over the last sixteen years. She enjoys travel, is a sculptor using indigenous weaving techniques, and loves spending time with family and friends.
Dr. Diane Flannery
Dr. Scott Grover is a licensed clinical psychologist who provides training, counseling, and consulting services. With a background in training mental health professionals specializing in trauma treatments, he is particularly interested in research related to training humanitarian aid workers for high risk environments and the psychological aspects of security training. Scott enjoys backpacking, snow skiing, teaching, and playing soccer with peers and his children.
Dr. Scott Grover
Renée Louve is the Business Development and Client Services Associate at Headington Institute. She assists individuals and organizations in creating a tailored plan of services to optimize the potential to thrive. Renee holds a Master of Arts in Human Services Counseling. In her spare time enjoys exploring healing art forms, staying active, reading, listening to podcasts and quality time with her family and friends.
Renée Louve
Dr. Monique Mendoza is a licensed counseling psychologist with a background in supporting individuals exposed to stressful environments. She specializes in transformational growth, resilience development and value-centered goal attainment. She brings a unique perspective to supporting global aid workers and offers a holistic view of trauma. She enjoys gardening, quality family time, and outdoor adventures.
Dr. Monique Mendoza
Dr. Jacquelyn Millham is a licensed clinical psychologist with more than a decade of experience in psychoanalytic psychotherapy, with a special focus on team dynamics in cross-cultural environments. She is a former aid worker, with experience in refugee support (Somalia and Thailand) and co-founded a nonprofit addressing children at risk in Kenya. She enjoys outdoor recreation, travel, gardening and hiking.
Dr. Jacquelyn Millham
Megan Moody acts as the Operations Manager at Headington Institute, overseeing its administrative, bookkeeping, and organizational needs. Megan graduated with an M.A. in Theology from Fuller Seminary in 2017. In their spare time, Megan enjoys performing music, exercising, and spending time with friends.
Megan Moody
Dr. Sheila Konyu Muchemi is a licensed clinical psychologist based in Nairobi, Kenya. She works in private practice. She has taught various courses at undergraduate universities in Kenya, and continues to provide trainings to different audiences on mental-health related topics. Dr. Muchemi has experience working in various inpatient and outpatient settings in the US where she obtained her doctorate degree. She enjoys traveling, a good novel, and spending time with friends and family.
Dr. Sheila Konyu Muchemi
Dr. Aaron Rosales is a licensed clinical psychologist who specializes in supporting people striving for a better world. He co-founded a nonprofit that partners with community leaders to design and launch wellbeing initiatives globally. In both therapy and training, Aaron uses this personal experience and insights to impart the key psychological skills for resilience in the face of adversity. He enjoys all things coffee, cooking, and travel.
Dr. Aaron Rosales
Abby Schmidt is a Research Assistant at Headington Institute, supporting data analysis and research and development projects. She is currently pursuing her doctoral degree in Clinical Psychology at Fuller Graduate School of Psychology. Having grown up in Cameroon, Abby is interested in providing mental health services for humanitarian workers globally. In her spare time she likes to explore new restaurants and food, spend the day at a park, or watch TV!
Abigail Schmidt
Dr. Alice Schruba is a licensed clinical psychologist with a background in serving individuals and groups experiencing acute and chronic stressors, burnout, substance abuse, and grief and loss. Her clinical interests surround values clarification, meaning-making, resilience, assessment, and spiritual and psychological well-being following disasters. She enjoys reading, listening to podcasts, and exploring nature preserves with her dog.
Dr. Alice Schruba
Kati Shepardson is a Research Assistant at Headington Institute and a doctoral student in Clinical Psychology at Wheaton College; she previously completed a Masters in Humanitarian and Disaster Leadership at Wheaton College. Her experience living through a major disaster as well as volunteering after disasters has led to a desire to understand what disaster recovery looks like for communities and individuals worldwide. Her primary clinical interests are trauma and neurodiversity, specifically autism in adults.
Kati Shepardson
Dr. Brent Stenberg is a licensed clinical psychologist with 35 years of experience providing training, counseling, and consulting services with a special focus on leadership development. Over the years, Brent has traveled to places like Haiti, South Sudan, Pakistan, and Afghanistan to support regional staff welfare initiatives. Brent enjoys international travel, mountaineering, and photography.
Dr. Brent Stenberg
Kristen Swift is the Special Projects Associate at Headington Institute where she executes ongoing support functions as well as strategic projects. She holds a B.S. in Communications from Boston University and enjoys spending time with her husband, kids, dogs, cats and chickens.
Kristen Swift
Muriel Tyan is a trilingual licensed clinical psychologist based in Paris, France with over 20 years experience. She has a background in treating patients with trauma from high risk environments. She gives training, webinars and is a lecturer and guest speaker on conferences in the Arab world. She is passionate about clinical work as a psychotherapist supporting patients suffering from PTSD, depression, bereavement, chronic illness, anxiety and burnout. She enjoys sports, reading, theater and dancing.
Muriel Tyan
Dr. Shelle Welty is a licensed psychologist who has been deeply influenced by her work with Central American refugees. Her clinical interests include trauma treatment, group psychotherapy, spirituality, and building resilience in those who live and/or work in chronically stressful environments. Shelle enjoys mountain biking, live music, and new adventures.
Dr. Shelle Welty
Dr. Jennifer T. Young serves as a bilingual Consulting Psychologist, providing psychotherapy services in English and Mandarin. She is a licensed psychologist with a background in family systems and couples therapy. Dr. Young’s work has been influenced by the multiple international settings she has worked in where she has provided training, consultation, programming, crisis intervention, and/or counseling services. She enjoys reading, writing, studying Mandarin and Spanish, dancing, and practicing yoga.
Dr. Jennifer T. Young
Meet Our Co-Founders
Dr. James Guy is cofounder and former Executive Director of the Institute (2001-2022). As a licensed clinical psychologist, researcher, and educator with 40 years of experience, Jim combined theory and practice to lead the Institute. Retiring at the end of 2022, he is now Executive Director of the Headington Institute Foundation.
Dr. James D. Guy, PhD
Dr. Timothy Headington is cofounder and former Board member of the Institute (2001-2012). He is president and sole owner of Headington Resources, with companies in oil and gas exploration, real estate development, and entertainment. He is an active philanthropist in the arts, education, and health and a visionary community leader in Dallas, Texas.
Dr. Timothy Headington
Meet Our Board of Directors
Leah Porter is a Vice President at Capital Group Companies Global, focusing on marketing. Leah is an experienced marketer with a proven track record in increasing brand equity and accelerating profitable growth in a variety of industries. Leah has been working with the Headington Institute for the past 8 years because she believes strongly in the mission of the organization. While she enjoys financial services, she also loves spending time with family and hiking.
Leah Porter, Chair
Jock Ebner is President of Morlin Asset Management, LP, a regional commercial real estate property management and leasing company. As a specialist in the management of multi-story office buildings and emergency response, including the well-being of emergency first responders. Over the years, Jock has been active in local communities as a coach in youth soccer and baseball organizations.
Jock Ebner, Vice Chair
Joan Riboli is retired CFO of The San Antonio Winery, the oldest winery in Los Angeles, and remains active in the family business. An experienced nonprofit volunteer, Joan was Commissioner of Soccer, AYSO, in South Pasadena, overseeing numerous programs and regional volunteers. A commitment to "helping those who help others" led her to join the board of directors in 2011. A new business venture and enjoyment of family and granddaughters continue to keep her busy.
Joan Riboli, Secretary
Pamela Fogg is a principal in the firm of Dowsett, Fogg, & Doler, P.C. where she directs the healthcare reimbursement practice supporting skilled nursing facilities and home health agencies. An active volunteer, she has served on the boards of an AIDS facility, an oral deaf school, and as a lottery commissioner for the state of Oregon. She is currently a founding board member of Arise Rwanda Ministries focusing on vocational education, clean and safe water systems, and community development in Boneza, Rwanda.
Pam Fogg, Treasurer
Michelle Banks is the President of the African American Firefighter Museum. Michelle joined the Los Angeles Fire Department (LAFD) in 1984. She is the LAFD’s third uniformed African-American woman, second African-American female Paramedic, and the first Special Assistant to the Fire Chief. Ms. Banks’ commitment to the fire service and dedication to enhancing the community’s well-being has been honored with California Senator Curren D. Prices Jr.s’ 2013 Hero Award and the Los Angeles City Women of Courage Award in 2000.
Michelle Banks
Christopher Martin is the Chief Executive Officer and Co-Founder of Direct Access Capital, a Dallas-based specialty finance firm. He has spent the last 13 years in alternative investments and is passionate about finding and pursuing the best risk-adjusted returns in the private credit markets. Christopher believes strongly in the Institute's mission of equipping global aid workers and emergency responders with the tools to flourish in the midst of a crisis. Apart from the investment world, Christopher enjoys flying, tennis, and blues music.
T. Christopher Martin
LuAnn Yocky is the retired National Executive Director for World Vision U.S. Working in the philanthropy division for over 35 years, she led trips throughout Africa, Asia, and Latin America to allow project partners to witness, firsthand, the impact of their humanitarian support. Her unique understanding of humanitarian challenges and expertise in philanthropy led her to join the board of directors in 2015. She remains involved with World Vision as a volunteer and is a charter member of the Columbia-Willamette Women of Vision.
LuAnn Yocky
Join our mission to support staff working in high-stress environments.
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