Annie Derthick, PhD, Psychologist in Kennesaw, Georgia

Helping adults across Georgia gain clarity, confidence, and a path forward is at the center of Annie Derthick’s work at LifeStance Health. As a psychologist, she provides comprehensive psychological testing and evaluation services for adults and older adults experiencing concerns related to ADHD, anxiety, depression, and a range of other mental health challenges. Annie believes that understanding the factors influencing a person’s thoughts, emotions, and behaviors is an important first step toward meaningful change and improved well-being. Annie has extensive experience assessing and helping individuals better understand cognitive, emotional, and behavioral concerns. Through psychological testing, she works collaboratively with patients to identify diagnostic questions, clarify symptoms, and provide practical recommendations that support treatment planning and personal growth. She also serves adults navigating complex concerns, including mood disorders, trauma-related symptoms, sleep difficulties, substance use concerns, and challenges related to medical conditions. In addition to these areas, she offers support for other mental health needs through evidence-based assessment and consultation services. She is particularly passionate about working with LGBTQ+ individuals and providing gender-affirmative medical readiness evaluations. Annie is committed to creating a respectful, inclusive environment where patients feel safe exploring their identities and healthcare goals. Her approach emphasizes compassion, cultural sensitivity, and individualized care that honors each person’s lived experience. Annie incorporates evidence-based approaches into her work, including Cognitive Behavioral Therapy (CBT), Acceptance and Commitment Therapy (ACT), and Dialectical Behavior Therapy (DBT). Her training helps her provide thoughtful assessments and recommendations that reflect each patient’s unique strengths, challenges, and goals. She earned her education from the University of Alaska Anchorage. Outside of her professional work, Annie enjoys gardening, landscaping, and writing fiction. These creative and restorative pursuits reflect her appreciation for growth, curiosity, and lifelong learning. Patients throughout Georgia seeking psychological testing, ADHD evaluations, gender-affirming evaluations, and support for anxiety, depression, or related mental health concerns can benefit from Annie’s compassionate and thorough approach to care.