Meet The Clinical Team

completed her Master of Science in Nursing in 2007, and is a Board Certified Family Psychiatric Mental Health Nurse Practitioner. She received an Honors Bachelor of Science in Nursing degree from the University of Texas at Arlington, and a Bachelor of Arts in Psychology and Spanish from the University of Texas at Austin. She has spent the last 10 years working extensively with patients of all ages with depression, anxiety, autism, PTSD, bipolar disorder, ADHD, and other mental health disorders. Prior to completing her Master’s degree she worked for 8 years with children and their families at Cook Children’s Hospital in Fort Worth, TX.  Meredith has worked with Dr. Costello at The Costello Clinic since 2010.

Outside of work, Meredith enjoys spending time with her husband and two children. She is actively involved with her children’s school as well as her church and her community. She is also involved with the Nursing Program at the University of Texas at Arlington, working to help train future Psychiatric Nurse Practitioners.

Sheila Trish is a board-certified psychiatric mental health nurse practitioner who obtained her BSN from the University of Texas at Arlington and her MSN from Eastern Kentucky University. She has over 28 years in healthcare including working as a psychiatric registered nurse, where she became passionate about caring for those dealing with mental health issues. Supporting, advocating for, encouraging, and motivating her patients is imperative to her when providing care. She strives to provide exceptional care to her patients. She is compassionate, empathetic and solution oriented.

 

Sheila Trish uses evidence-based research and a holistic and integrative approach when treating her patients. She is trained to treat children, adolescents, young and older adults, dealing with ADHD, depressive disorders, mood disorders, anxiety disorders, psychosis and more. She wants her patients to leave their appointment feeling like their concerns have been heard and fully addressed in a respectful and nonjudgmental way.
 

During the initial visit, after a comprehensive psychiatric evaluation, she collaborates with her patients and the interdisciplinary team, to create the best individualized treatment plan, to help her patients achieve their short and long-term wellness goals.
 

During her free time, she loves to volunteer her services to those in need and travel with her twin boys and her dog Bella.

Jason Smith is a Licensed Psychological Associate (LPA) practicing under the supervision of Dr. Christina Della Nebbia. He has worked in the mental health field for more than five years and has provided a variety of services to his local Denton County community as well as communities in rural East Texas. Jason graduated from Texas A&M University – Commerce (TAMUC) in 2018 with a Master’s of Science in Applied Clinical Psychology and began his career during his graduate studies providing assessment and diagnosis at the TAMUC Community Counseling and Psychology Clinic.

 

After graduation, Jason moved back to Denton County and served as a residential counselor at a psychosocial rehabilitation facility for three years where he helped rehabilitate individuals experiencing mental health crises. Afterwards, he served as a house manager playing a vital role in the development of the programmatic structure of a safe house providing mental health services and more to young men who have survived sexual exploitation and sex trafficking. Jason has a wealth of experience treating and testing individuals with PTSD, bipolar disorders, depression, anxiety, and substance use disorders.

“I am proud and excited to be working with this fantastic team of professionals here at Highland Village Mental Health & Wellness Center! My aspiration is to use my expertise to give back to my community and help folks in need get back to living happy and healthy lives.”

Cintia Martinez is a Licensed Psychological Associate. She is currently under the supervision of Dr. Christina Della Nebbia. She graduated from the Texas A&M University-Commerce in May 2022. During her graduate career, she was trained in conducting assessments and providing therapeutic interventions, specializing in Cognitive Behavior Therapy. She completed her graduate internship at Terrel State Hospital, providing short-term mental health services for adolescents and adults with severe mood disorders as well as leading psychotherapy groups.

 

Prior to her role as an LPA, Cintia worked with individuals on the Autism spectrum as a Registered Behavior Technician for four years. As an RBT, she led social skills groups, provided one-on-one therapy, and provided parent training.

 

Currently, she is specializing in treating anxiety, depression, and behavior regulation for children, adolescents, and young adults.