Meet Our Clinicians

Courtney Hicks, MS, LMFT-Supervisor, DBT-Linehan Board of Certification, Certified Clinician™

Ms. Hicks is one of just four DBT-Linehan Board Certified Clinicians in North Texas, one of just a handful in Texas, and one of less than 400 in the world. She received her Master of Science in Counseling at Southern Methodist University. She completed her graduate internship in the child and adolescent unit at Timberlawn Mental Health Services. She then worked as a quality training supervisor at Adapt Community Solutions and later as an inpatient treatment manager in both the adult and adolescent units at Green Oaks Hospital. After finding inpatient treatment to be ineffective in maintaining long-term results, Ms. Hicks sought out training in DBT to be more effective in helping clients rediscover a life worth living. She has since been working in private practice providing DBT and is an Intensively Trained DBT Therapist through Behavioral Tech., and also offers DBT Prolonged Exposure Protocol for PTSD, DBT-PTSD for Complex PTSD (C-PTSD), and Cognitive Behavioral Therapy for Insomnia. Courtney is also certified in Brainspotting, which she integrates into her DBT practice to help clients access the subcortical brain and increase nervous system regulation.

Courtney Also offers consultation in DBT for providers who are training in DBT or seeking DBT certification.

Email Courtney at info@ntxdbt.com

For license details and verification: https://www.bhec.texas.gov/verify-a-license/index.html

Courtney Hicks, MS, LMFT-Supervisor, DBT-Linehan Board of Certification, Certified Clinician™

Leigh Mann, MS, LMFT

Leigh Mann, MS, LMFT

Leigh has a master’s degree in Counseling from Southern Methodist University and is a Licensed Marriage and Family Therapist. She trained with Wayne Albrecht, director of the Pastoral Counseling Center of Dallas, where she worked prior to starting her private practice in July of 2015. She volunteered for eight years with Contact Telephone Crisis and Suicide Hotline, which made her realize she wanted the opportunity to help people change their lives and avoid further pain and crisis. Along the way, she learned that life is never simple, every challenge has value, and we are all intrinsically resilient. Leigh is an Intensively Trained DBT Therapist through Behavioral Tech and offers DBT for Children.

Email Leigh at info@ntxdbt.com

For license details and verification: https://www.bhec.texas.gov/verify-a-license/index.html


Whitney Lee, LMFT

Whitney Lee, LMFT

Skills Group Coordinator

Whitney graduated with a Master of Science in Counseling from Southern Methodist University. She completed her graduate internship in the child and adolescent unit at Timberlawn Mental Health Services, after which she worked as a geriatric inpatient therapist at Hickory Trail Hospital. She then went on to work as quality training supervisor at Adapt Community Solutions and later as an inpatient treatment manager at Green Oaks Hospital. She has also worked with criminal justice-involved clients and at various non-profit and community mental health organizations. While working in these settings, she developed a desire to help people achieve long-term goals instead of serving individuals on just a short-term basis. Through her experiences, she learned people have an innate desire to connect with others in a healthy, meaningful way and are more capable and resilient than they may think. Whitney has completed Foundational Training through Behavioral Tech. She is in currently in training in DBT under the supervision of Courtney Hicks, LMFT-Supervisor, DBT-Linehan Board of Certification, Certified Clinician™.

Email Whitney at info@ntxdbt.com

For license details and verification: https://www.bhec.texas.gov/verify-a-license/index.html


Payton Landrum, LPC Associate, Supervised by Kelly Couture, LPC-S

Payton graduated with her Master of Arts in Professional Counseling from Amberton University. During her time at Amberton, she completed an internship working in an adolescent partial-hospitalization and intensive-outpatient program that specialized in substance use and mental health. After graduation, she worked at an inpatient psychiatric facility completing intake assessments, but she realized she missed working with clients long-term. Payton has a passion for helping others find meaning and learn effective ways to cope; which is why she is excited to use DBT as an evidenced based treatment with clients for sustained change. Payton is supervised by Kelly Couture, LPC-S and is training in DBT under the supervision of Courtney Hicks, LMFT-Supervisor, DBT-LBC.

Email Payton at info@ntxdbt.com

For license details and verification: https://www.bhec.texas.gov/verify-a-license/index.html

Payton Landrum, LPC Associate


Nancy Davila-Slentz, LPC

Nancy Davila-Slentz, LPC

Skills Trainer

Nancy graduated with her Master of Education in Clinical Mental Health Counseling from Texas Tech University. While at Texas Tech, she completed her graduate training by working with teenagers and families in the foster care system, as well as leading substance abuse groups at a local nonprofit. After moving to Dallas she worked as an inpatient therapist on the adolescent, adult, and psychiatric ICU units at Dallas Behavioral. Nancy quickly learned that she wanted to work with those seeking mental health services in a deeper and more effective way. She has completed Foundational Training in DBT through Behavioral Tech.

Email Nancy at info@ntxdbt.com

For license details and verification: https://www.bhec.texas.gov/verify-a-license/index.html


Tere Rivera, MS, RDN, CED-S, FAED

Registered Dietitian Nutritionist

Certified Eating Disorder Specialist and Supervisor

Fellow of the Academy for Eating Disorders

Tere is a Certified Eating Disorder Dietitian and Approved Supervisor through the International Association of Eating Disorder Professionals (IAEDP). She graduated from The University of The Incarnate Word in San Antonio, Texas with a M.S. in Nutrition and has worked in the eating disorder field in all levels of care for more than 20 years supporting children, adolescents, adults, and their families.

She is intensely trained in DBT and has been honored with the distinction of Fellow of the Academy for Eating Disorders (FAED) for her collaboration on the prevention, treatment and research of eating disorders and has presented in global conferences on topics related to nutrition and eating disorders throughout Europe, North and South America.

As a Master level Registered Dietitian with extensive experience in Medical Nutrition Therapy and Eating Disorders, Tere specializes in helping children older than 8, adolescents and adults who struggle with disordered eating, eating disorders or with medical conditions that require changes in their lifestyle to improve their nutritional status. As a bilingual clinician she works with patients in English or Spanish.

Tere believes that through the combination of evidence-based treatment and compassionate dietary guidance, you can meet your nutrition goals, rediscover joy in eating and gain piece with food and body.

“My mission is to help you build a healthier relationship with food starting from where you are, to help you rediscover joy and inner wisdom about how to nourish yourself”

Tere is the founder/owner of Wise Nutrition Counselling LLC.

Contact Tere at wisenutritioncounseling.com

Tere Rivera, MS, RDN, CED-S, FAED