Kerrie Armstrong, Ph.D.


Philosophy of Care:

Dr. Kerrie Armstrong is an experienced psychologist who thoughtfully approaches clients with empathy, creativity, and a sense of humor. With extensive training in anxiety disorders, she is able to successfully diagnose and treat a wide range of symptoms, including generalized anxiety, social anxiety, panic disorder, OCD, phobias, and depression. She works closely with children and families, helping children overcome their fears and providing guidance so parents can most effectively support their children. Dr. Armstrong’s goal is to meet her patients where they are on their journey, building on their strengths and using the optimal treatment methods based on each individual’s unique circumstances. Her clients learn how to respond to their anxious symptoms with more effective thought patterns and behaviors that they can apply throughout their lives. Utilizing cognitive behavioral therapy, exposure therapy, and other evidence-based treatment strategies, she helps people live fuller lives less burdened by anxiety.

Special Interests:

Dr. Armstrong is dedicated to helping people who suffer from anxiety disorders to live their best lives with minimal symptoms. She specializes in treatment for OCD spectrum disorders, generalized anxiety, social anxiety, and panic disorder. She has received advanced training in empirically-based treatments for anxiety and related disorders including Cognitive Behavioral Therapy (CBT), Dialectical Behavior Therapy (DBT) and Habit Reversal Training (HRT).

A risk-taker herself, Kerrie exercises her adventurous spirit through skydiving, wall climbing, and ziplining, Although she loves adrenaline-pumping activities herself, she is sensitive to her clients and gradually exposes people to things they fear without making them jump out of airplanes! An outdoor enthusiast, she likes to run and hike, followed by relaxation with a good book or spending time with family.

Experience and Training:

Dr. Kerrie Armstrong earned her Ph.D. in Clinical Psychology from Rosalind Franklin University of Medicine and Science (formerly the Chicago Medical School). As a licensed clinical psychologist, she directs the Oakbrook office of the Anxiety Treatment Center, specializing in treating children, adolescents and adults with cognitive behavioral therapy. She has trained and conducted research with several internationally recognized experts in the anxiety field, including Dr. Karen Cassiday and Dr. Alec Pollard. She completed her postdoctoral fellowship at Saint Louis Behavioral Medicine Institute where she specialized in the intensive treatment of severe anxiety disorders. She gained additional specialized expertise at the OCD Residential program at Rogers Memorial Hospital in Oconomowoc. In addition to generalized anxiety, social anxiety, and panic disorder, she is also experienced in treating OCD, BDD, trichotillomania and dermotillomania. She has presented at several conferences and is a member of the Anxiety and Depression Association of America (ADAA).

Patient Age Range:

Children through Adults

Office Location:

Oak Brook and Deerfield

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  • Testimonials

    Susan Richman, J.D., Co-founder, Honorary Chair and Board Member, Beyond OCD

    Dr. Cassiday changed my life.  She took me on “field trips” to wherever was necessary to deal with my OCD triggers. She never hesitated to get down in the trenches with me and teach me new ways to respond. She was truly a partner in my healing.  We laughed a lot together, so what could Continue Reading

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