
Licenses and Certifications
Doctor of Philosophy (Ph.D.) in 2009 from the University of Houston- APA Accredited (School Psychology)
Master's Degree (M.A.) in 2003 from Texas State University-NASP Accredited (School Psychology)
Bachelor's of Science (B.S) in 1999 from the University of Arizona (Psychology)
Dr. Villesca is a Licensed Psychologist with the Texas State Board of Examiners of Psychologists TX License #34550. For information on how to verify a license, please go to www.tsbep.texas.gov. For information on how to file a complaint, please go to the following page: https://www.tsbep.texas.gov/how-to-file-a-complaint-enforcement.
About Me
I am a Licensed Psychologist (and also a child psychologist) currently practicing in Katy, Texas. I earned my doctorate from the University of Houston, an evidenced-based program approved by the American Psychological Association. I have been practicing for over 20 years combined in both school districts and in private practice. I specialize in conducting psychological evaluations and psychoeducational evaluations for children, adolescents, and adults. I assess many areas including AD/HD, autism (ADOS-2 trained), oppositional defiant disorder, mood disorders (including bipolar), depression, and anxiety. I conduct psychological evaluations for clients from toddlers (18 months for developmental delays) to adults. I also provide therapy for these conditions, with expertise in Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT), and Parent Management Training for ADHD and ODD. I have advanced training in testing for learning disabilities including dyslexia, dysgraphia, and dyscalculia (reading, writing, and math disorders). My specialization also includes expertise in neuropsychological testing which explores issues related to memory, attention, visual-spatial processing, language, and executive functioning. I am also bilingual (English/Spanish).
Areas of Expertise
Comprehensive Assessments – Specializing in Autism, ADHD, and Learning Disabilities (Dyslexia/Dysgraphia)
Therapy for All Ages – Individual therapy for depression and anxiety in children, adolescents, and adults (18+)
Evidence-Based Treatment – Utilizing CBT, DBT, ACT, and Motivational Interviewing
Bilingual (English/Spanish) | Accepting Clients Summer 2025
Dr. Dyanna Martinez Villesca
Owner | Licensed Psychologist,
School Psychologist (LSSP)