Meet the Team

ARCH Academy has assembled some of the best adolescent addiction treatment staff with proven results for our teen Drug & Alcohol Recovery Center. Here you can meet the team of ARCH Academy who work right along side your child or loved one. We bring decades of experience to recovery and looking forward to walking with you on your journey. Dean Porterfield, LPC-MHSP, NCC - Director

Dean Porterfield, LPC-MHSP, NCC


Dean Porterfield currently serves as the Director of ARCH Academy. Dean has been with Cumberland Heights for over 8 years. As the Director he is responsible for day to day operations of ARCH as well as overseeing program development, staff development, referral relations, research and community outreach/education on teen addiction. Dean has served as Executive Director of an outdoor therapeutic program for adolescent males for over 10 years. Dean also has served on the Board of Director of NATSAP (National Board of Therapeutic Schools and Programs), and frequently presents at national, regional and local conferences. Dean is also an approved LPC clinical supervisor. Dean brings over 18 years experiences working with the adolescent population and their families. He believes in a strength-based approach and understands that authentic relationships with the teens and families we serve is paramount for lasting change.
Dr. Chapman Sledge - Chief Medical Officer for ARCH Academy

Chapman Sledge, MD

Chief Medical Officer

Dr. Chapman Sledge accepted his role as Chief Medical Officer at Cumberland Heights in 2009. For the previous 15 years, he had been Medical Director of Addiction Treatment Services at Pine Grove Behavioral Health in Hattiesburg, MS. Dr. Sledge is a nationally known physician in addiction medicine, served on the board of directors for the American Society of Addiction Medicine, and regularly speaks at conferences around the country. Dr. Sledge was among the first group of physicians to receive certification by the American Board of Addiction Medicine. He also serves on the Medical/Scientific Committee of the National Council on Alcoholism and Other Drug Dependence. Dr. Sledge is a graduate of Louisiana State University and the University of Mississippi School of Medicine. He completed residency training in Family Medicine and was certified by the American Board of Family Practice in 1986.
Amara Diffenderfer, MA - Admissions and Outreach Specialist

Amara Diffenderfer, MA

Admissions and Outreach Specialist

Amara Diffenderfer is the Admissions and Outreach Specialist for ARCH Academy. Amara completed her undergraduate in psychology at Middle Tennessee State University and went on to complete her graduate degree in counseling at Trevecca Nazarene University. Her own struggles in high school and her counseling internship at Father Ryan High School made her realize her deep passion for helping young people. Her other passion in life is the Harry Potter series. Amara has been with Cumberland Heights since 2012.
Blair Falconello, LMFT

Blair Falconello, LMFT

Family Therapist

Blair Falconello joined Cumberland Heights in 2015 as the Young Men’s Family Counselor and is now developing family programming for ARCH Academy. A licensed marriage and family therapist, Blair also has a private practice where she specializes in treating couples, young adults and teens. She is a member of the American Association for Marriage and Family Therapy. She earned both her bachelor’s degree in Child & Family Studies and her master’s degree in Marriage and Family Therapy at Southern Miss. Her goals at Cumberland Heights are to advocate for those finding their voice and to instill hope.
Caleb Vogtner, LPC-MHSP, NCC

Caleb Vogtner, LPC-MHSP, NCC

Primary Therapist

Caleb Vogtner currently serves as Adolescent Primary Therapist at ARCH Academy. He will walk along with each teen as they embark on a journey to greater emotional, mental and spiritual healing through individual, family and group counseling. Caleb operates his own private practice focusing on the treatment of adolescent and young adult males. He is a licensed professional counselor, mental health service provider, nationally certified counselor and certified adventure ropes course practitioner.
Jerald 'JT' Tisdale, MA, NCC - Primary Therapist

Jerald “JT” Tisdale, MA, NCC

Primary Therapist

JT Tisdale has been working with adolescents at Cumberland Heights since 2011 and has held several roles including Clinical Associate Team Leader, Case Manager and his current role of Primary Counselor at ARCH Academy. JT got his master’s degree in counseling from Trevecca Nazarene University. He is a National Certified Counselor (NCC) and is currently pursuing his LPC-MHSP and LADAC. JT has a passion for working with adolescents and their families.

Dr. Tenganyike Cook

Director of Education

Dr. Tenganyike Cook is the Director of Education for ARCH Academy. Prior to her arrival, Dr. Cook served in the public education sector as a teacher, assistant principal, and principal for over 20 years and most recently as a principal at a juvenile detention facility. Dr. Cook is an author, publishing her first book in 2012 entitled, Ummm…..Yes, it’s Middle School. As the Director of Education, Dr. Cook strives to ensure students receive a quality educational experience at ARCH Academy. Students will work toward the academic goals established by their sending school while receiving the additional support needed in their respective subjects. Dr. Cook is a firm believer that educating students can’t be done with a cookie cutter approach — every student is different and has his own educational needs. She is adamant about meeting students where are to get them to where they need to be.

Matthew Silvey


Matthew Silvey joined the ARCH Academy team as a teacher in 2019. As an educator, Mathew taught Agriculture at the high school level as well as Agriculture Systems for Austin Peay State University as an adjunct professor. He holds at Outstanding Thesis Award from Omicron Tau Theta, honorary professional graduate society in career and technical education. His goal at ARCH Academy is to create a safe, stable educational space for young men and to inspire them to find life-long recovery by sharing his own story. Matthew is celebrating nearly 25 years of sobriety.
Royce Douglas, CPRS

Royce Douglas, CPRS

Team Leader

Royce started working at Cumberland Heights part time for a few months before accepting a full time CA position. A year and a half later he transitioned to the Adolescent Team Leader position where he supervises the youth CA’s and helps create a safe, comfortable environment for the boys to learn about addiction, while also holding them accountable for their behaviors. Before working at Cumberland Heights, Royce worked with kids who had major behavior issues for 5 years. Royce has worked at Cumberland Heights for 5 years.

Deanna Szabo

Primary Counselor

Deanna Szabo has been with Cumberland Heights since 2014, first as a Clinical Associate in the Youth Program. She completed her master’s degree from Lipscomb University in professional mental health counseling with a specialization in addiction and now works at ARCH Academy as a primary counselor. Her goal at ARCH is to help young people uphold their individual freedom and authenticity, two things that often compromised by the disease of addiction.

Ricky Sanders - Chef ARCH Academy

Ricky Sanders


Ricky Sanders has been feeding patients’ stomachs and recovery since August of 2018. He is originally from Nashville and is a graduate of Father Ryan High School and Aquinas Junior College. His for the ARCH Academy are to not only feed young men three nutritional meals daily, but to teach them skills in the kitchen and in life. Ricky says he is looking forward to meeting new friends and helping them overcome their struggles. An alumnus of Cumberland Heights, Ricky feels blessed to give back and be a part of the ARCH Academy team.

Cole Szabo

Regional Outreach Coordinator ARCH Academy

Since Cole joined the Cumberland Heights team in 2015, his goal has been to provide top notch care to patients and spread the mission of our facility with every interaction. Cole is an alumnus of Cumberland Heights, being treated for substance use disorder in 2013. He knows the struggles young men face when battling addiction and he wants to use his experience to guide others on their path to recovery. Cole is a LADAC, and currently working on his B.A. at Lipscomb University.