Meet Our Clinicians

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

Ms. Hicks is one of just two 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 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


Nancy Davila-Slentz, LPC

Skills Group Coordinator

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 and is trained in EMDR.

Email Nancy at info@ntxdbt.com

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

Nancy Davila-Slentz, LPC


Whitney Lee, LMFT

Whitney Lee, LMFT

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. 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