Dr. William P. Ketterer, Psy, D. – Clinical Director

Dr.  Ketterer is a doctorate-level clinical psychologist with additional training in psychological assessment, individual and family therapy, and relational treatment modalities. He has 17 years of experience working with young people, in different roles including program counselor, teacher, consultant, and therapist. He has experience in colleges, residential treatment settings and school systems. He completed both his doctoral internship and postdoctoral fellowship at Norwich University’s College Counseling Center, where he was awarded the Commandant's Award of Excellence and the Student Affairs Award of Excellence for his work with students in emotional crisis.

Dr.  Ketterer’s diverse research interests include exploring the curative effects of wilderness, the development and maintenance of self-esteem, crisis de-escalation and anger regulation. In his research regarding the healing effects of wilderness, he discovered Appalachian Trail “thruhikers" experienced tremendous emotional growth. This growth, however, wasn’t facilitated by the mountains alone, but by the sense of community among those who sought fellowship in the wilderness. The research is directly correlative to his work at Confluence Behavioral Health were wilderness expeditions uniquely provide the opportunity to nurture restorative relationships that enable emotional growth. Similarly, healthy idealization, empathic attunement and a sense of belonging are the foundation of both self-esteem and the interpersonal key to affect regulation and reducing angry outbursts. Dr. Ketterer’s relational counseling model "Healing the Self" has been adopted by public schools in both Vermont and New Hampshire.

Dr.  Ketterer is an avid outdoorsman. His outdoor resume includes: thru hiking the Appalachian Trail, rock and ice climbing throughout the United States, ski exploring New Hampshire’s White Mountains, bicycle touring across the South East,  mountaineering in Alaska, and alpinism in the Peruvian Andes, French, Italian and Swiss Alps. In 2006, Dr. Ketterer declined an invitation on a sponsored Mt. Everest expedition to return to graduate school and complete his doctorate. Currently, he competes in IronMan distance triathlons.

Contact Dr. Ketterer


Dr. Caitlin Wagner Kinnart, Ph.D. – Individual Therapist 

Dr. Kinnart comes to Confluence with a depth of experience focused on helping adolescents, young adults, and their families through mental health challenges. She has worked in a number of settings including private and community-based mental health services. She began her career as a field instructor at a wilderness program for adolescents in Montana. While in Montana she earned a M.S. in Mental Health Counseling from Montana State University and continued working with the wilderness program as a counseling intern and then therapist. After moving East to Vermont, Caitlin worked as a family therapist and provided individual, group, and family counseling for adolescent girls enrolled in a residential therapeutic boarding school.

In 2010, Dr. Kinnart returned to school at the University of Vermont, where she earned an M. A. in Developmental Psychology and a Ph.D. in Developmental Psychopathology and Developmental Psychology. At UVM her direct care work and research focused on the young adult experience, stress, emotions, and relationships in college life, as well as coping within family systems. Dr. Kinnart has academic experience as a teaching assistant, lab instructor, visiting professor, and guest lecturer between Middlebury College and University of Vermont. Dr. Kinnart’s work experience and academic interests perfectly align with her role at Confluence.

Contact Dr. Kinnart

Dr. Thomas Gamble, Ph.D. – Individual Therapist 

Dr. Gamble received his graduate degree from Washington University in St. Louis with an undergraduate degree from Amherst College, and completed his education with a two-year internship at the Department of Psychiatry, Dartmouth Medical School in 1991. He provided psychological services to adolescents, young adults, and their families across a variety of settings within a group practice for two decades; he provides services at Hanover High School and clinical supervision to agencies in the Upper Valley. His clinical interests include identity formation, family systems, mood, anxiety, and conduct disorders, as well as issues related to trauma and loss. Dr. Gamble is an outdoor enthusiast with thousands of paddling miles behind him and many years of 100-day ski seasons.  

Contact Dr. Gamble


Bill Brown, MHC – Milieu Therapist and Program Coach 

Bill is a therapist and mental health counselor with expertise in treating young adults experiencing a wide range of emotional difficulties and life challenges. Bill’s professional interests include the impact stress and emotional turmoil have on identity formation and development. His work employs mindfulness based interventions and explores the mind-body relationship. Using the inherent healing qualities of wilderness and outdoor experiences, he helps young adults overcome the hurdles they face. Bill has worked in a number of settings including wilderness therapy and transitional coaching programs. He has created and run transitional housing programs for young adults and worked with young adults in outpatient clinics and in residential settings. He earned his BA from the University of Vermont and his Master’s in Counseling from Antioch University. 

Contact Bill


Heather Koledo, LMFT, LADC – Group Therapist

Heather has been a practicing mental health counselor since 1995 having worked in school, private practice and community mental health settings. Heather holds Bachelor's and Master's Degrees in Education and Literature from Tufts University and earned a Master’s in Counseling Psychology from the University of Massachusetts. Heather is experienced providing assessments, individualized treatment, case management and family counseling to adults, individuals, couples, families and groups. As a Licensed Alcohol and Drug Counselor, Heather also has experience addressing the impact substance use and addiction have on personal well-being and relationships. The focus of her clinical work over the past ten years has been treating co-occurring disorders using mindfulness and physical activity as the foundation for wellness. As a Licensed Marriage and Family Therapist, Heather understands the importance of integrating the family into the continuum of care and to address long standing relational challenges.

Contact Heather