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The Anxiety Treatment Center of Greenwich was founded by Jill Vaughan Tesei and Maryellen Pachler Kennell to provide expert, compassionate care for children, adolescents, and adults struggling with anxiety and related disorders. With a strong foundation in evidence-based practices and a deep understanding of both developmental and adult psychology, the center specializes in Cognitive Behavioral Therapy (CBT), parent guidance, Genomind genetic testing, and psychopharmacological support. ATC Greenwich is committed to helping individuals and families navigate anxiety with clarity, confidence, and proven therapeutic methods.
At The Anxiety Treatment Center of Greenwich, we’re not a general mental health clinic—we’re specialists in treating anxiety and related disorders in children, teens, and adults. Our approach is rooted in clinical expertise, compassion, and a deep understanding of how anxiety uniquely affects young minds and their families.
We specialize in the treatment of anxiety disorders, phobias, and Obsessive-Compulsive Disorder (OCD), offering advanced, targeted care that goes beyond general therapy.
We rely on Cognitive Behavioral Therapy (CBT)—the gold standard in anxiety treatment—and other proven techniques to help children, adolescents, and adults build real-world coping skills. Our practice also offers innovative options like virtual reality therapy for fears, phobias, and OCD, as well as Genomind genetic testing to support personalized treatment planning.
Parents are not just observers; they’re part of the process. We actively involve families as partners in therapy, guiding them to support their child outside of sessions.
Our practice is led by two board-certified nurse practitioners who trained at Yale and still teach at the Yale University School of Nursing.
Maryellen focuses on CBT for anxiety and OCD in children and teens, and offers behavioral parent training. Jill brings more than two decades of psychiatric experience caring for children, teens and adults.
Not sure who is the right fit? Call (203) 769-1365 and we’ll help you decide.
Thunder and Carson, our in-office therapy dogs, help create a calming, supportive environment for patients. Trained to assist those experiencing anxiety, they offer quiet companionship and emotional comfort during sessions
We provide expert diagnosis and evidence-based treatment for anxiety disorders in children, adolescents, and adults—helping individuals and families move forward with clarity and confidence.
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