Dr. Ann Weller
Dr. Ann Weller, Licensed Clinical Psychologist
Child Psychologist in St. Charles, IL | Child & Adolescent Mental Health Specialist
Dr. Ann Weller is a Licensed Clinical Psychologist, a member of the American Academy of Pediatric Neuropsychology, and a child psychologist in St. Charles, IL, specializing in the diagnosis and treatment of complex mental health conditions in children and adolescents. With over 15 years of experience, she has dedicated her career to helping kids, teens, and families navigate emotional and behavioral challenges.
Importantly, mental health conditions often present differently in children than in adults. As a result, many children receive inaccurate or incomplete diagnoses based on outdated models. Therefore, Dr. Weller prioritizes diagnostic precision and delivers evidence-based, developmentally appropriate care tailored to each child.
Leadership at Plum Tree Psychology
In 2011, Dr. Weller founded Plum Tree Psychology, a leading practice for families seeking a child psychologist in St. Charles, IL. Today, she leads clinical oversight, staff supervision, and professional development.
In addition, she actively integrates a multidisciplinary approach by collaborating with the Plum Tree Team. Because of this, families benefit from a wraparound care model that supports children across home, school, and community settings.
Clinical Expertise & Psychological Evaluations
As Plum Tree’s clinical specialist, Dr. Weller consults on complex cases and provides comprehensive psychological, educational, and neurodevelopmental evaluations.
Specifically, these evaluations help to accurately diagnose mental health conditions, develop individualized treatment plans, and support children at home, in school, and in therapy
In particular, as a trusted child psychologist in St. Charles, IL, she works with a wide range of conditions, including: ADHD, anxiety disorders, depression and mood disorders, OCD and Tourette’s syndrome, autism spectrum disorders, developmental and personality disorder
Trusted by Schools, Pediatricians & the Community
Dr. Weller is widely known for her high-quality psychological testing reports. Consequently, schools, pediatricians, and mental health professionals regularly rely on her evaluations to guide care.
Furthermore, she frequently presents to schools, parent groups, and organizations. Her topics include: child and adolescent development, IQ/EQ, Trauma and emotional regulation, ADHD and executive functioning, Suicide and self-injury prevention, anxiety, depression, mood disorders, parenting strategies, and classroom support
Extensive Clinical & Research Background
Dr. Weller has worked across the full continuum of care, which strengthens her expertise as a child psychologist in St. Charles, IL. Her experience includes: inpatient psychiatric hospitals, partial hospitalization programs (PHP), intensive outpatient programs (IOP) , outpatient therapy, college counseling centers, and community mental health settings
Additionally, she contributed to research with Loyola University’s Psychology Department. She also served as Clinical Director at Streamwood Behavioral Health, where she developed specialized programming for young and high-acuity patients.
Advanced Training & Treatment Modalities
Dr. Weller uses several evidence-based approaches to support children and families that includes: dialectical Behavior Therapy (DBT), Eye Movement Desensitization and Reprocessing (EMDR), ADHD Coaching
As a result, she delivers targeted, effective care that adapts to each child’s needs.
Why Families Choose Dr. Weller
Families choose Dr. Weller as their child psychologist in St. Charles, IL for several key reasons. Most importantly, she provides: accurate, developmentally informed diagnoses, a collaborative systems-based approach, expertise in complex and high-needs cases, strong relationships with schools and providers, and a clear commitment to improving long-term outcomes.
