Meet Our Team
The people behind the healing.
Eagle Overlook is led by clinicians and operators who have spent their careers helping young people recover. Experienced, credentialed, and personally invested in every family we serve.
Dr. Kambiz Aflatoon, DO, MBA
Dr. Aflatoon completed his residency in New York and an Addiction Psychiatry fellowship at Emory University School of Medicine. He has since served as Medical Director at SummitRidge Hospital, Ridgeview Institute, MARR, and Mount Sinai Wellness Center. As Founder and Medical Director of Eagle Overlook Recovery, he leads a program devoted to helping adolescents overcome substance use disorders and co-occurring mental health conditions through evidence-based, compassionate care.
His clinical philosophy reaches well beyond symptom management. Rather than defining a young person by a diagnosis, he sees their struggles as the raw material for growth, resilience, and transformation - a foundation for empowerment and self-development.
At Eagle Overlook, he fosters an environment where teens rediscover their individuality, creativity, and purpose while building respect for family and community. He is committed to treating the whole person - mind, body, and spirit.
“True healing is not only recovery from illness, but a meaningful life aligned with one’s values and potential.”
Brian S. Buffington
Brian is a seasoned operations and public-safety leader with more than 20 years of experience across law enforcement, international advisory work, healthcare operations, and substance abuse treatment. As CEO of Eagle Overlook Recovery, he brings a steady, mission-driven approach grounded in accountability, compassion, safety, and structured care.
Before Eagle Overlook, he held senior operations roles in inpatient substance abuse treatment - directing daily operations for a 120-bed facility and managing more than 200 staff across medical, administrative, and support departments - overseeing regulatory compliance, strategic planning, emergency response, and patient-centered workflows that improve care quality and outcomes.
His background also includes decades of law enforcement service in patrol, investigations, SWAT, supervision, and training, as well as service as an International Police Advisor in the Middle East.
“A safe, structured, and supportive environment is the foundation everything else is built on.”
Sarah Hartshorn-Chapman, MS, LPC, NCC
Sarah oversees the clinical department and leads the treatment team in providing structured, intentional, and compassionate care for adolescents and their families. She holds a Master of Science in Clinical Mental Health Counseling from the University of North Georgia and is a National Certified Counselor.
A four-year collegiate basketball player, Sarah earned her undergraduate degree in Psychology from Truett McConnell University. Her years as a student-athlete shaped a deep belief in discipline, perseverance, accountability, and resilience - values that still guide her clinical work. She joined Eagle Overlook in 2022 and was promoted to Clinical Director after earning her LPC.
Her approach is compassionate, direct, and action-oriented. She helps adolescents move beyond simply talking about change toward real growth, and she is committed to caring for the whole person - physically, mentally, emotionally, and spiritually.
“Young people are not defined by their past decisions or struggles.”
Shane Rayburn
Shane Rayburn brings more than twenty years of experience in Georgia’s public schools as an educator and administrator, along with bachelor’s, master’s, and doctoral degrees in education and language. That deep grounding in adolescent development, learning, and family systems now anchors his clinical work with teens. As a person in recovery himself, he pairs professional training with lived experience and a genuine understanding of what the recovery process asks of a young person and their family.
At Eagle Overlook Recovery, Shane serves as a Counseling Intern, working under the supervision of Clinical Director Sarah Hartshorn-Chapman, LPC, while completing a master’s degree in Clinical Mental Health Counseling at Richmont Graduate University with specialized training in child and adolescent counseling. He works with adolescents facing substance use, behavioral concerns, family conflict, anxiety, depression, and life transitions - drawing on attachment-informed, narrative, psychodynamic, and person-centered approaches to help young people build self-awareness, strengthen coping skills, and move toward lasting change.
Riley Silva, LMSW
Riley Silva is a Licensed Master Social Worker (LMSW) with two years of experience in the mental health and substance use treatment field. Riley earned a Master of Social Work from Kennesaw State University and provides therapy to female clients in Eagle Overlook’s residential setting.
Riley’s approach is rooted in humanistic and psychodynamic theory, emphasizing each person’s unique experiences, strengths, and story. Working from a supportive, compassionate, and nonjudgmental space, Riley helps clients explore challenges, develop insight, build resilience, and strengthen healthy coping skills - believing that healing happens through authentic connection, self-discovery, and empowerment.
Ready to take the first step?
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Care a parent can trust

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Clinically-driven adolescent recovery in the Blue Ridge Mountains of Dahlonega, Georgia.
34.446° N · 83.975° W
