Dr. Appenzeller is a Licensed Psychologist and Co-Director of the Texas Institute for Cognitive & Behavioral Therapies (CBTTexas) where he specializes in the evidence-based treatments of eating disorders, obsessive-compulsive disorder (OCD), anxiety, mood, and personality disorders. His approach is rooted in science and guided by empathy. Previously, Dr. Appenzeller served as an Assistant Professor of Psychiatry and Behavioral Sciences at McGovern Medical School at UTHealth Houston, where he was honored to receive the Dean’s Teaching Excellence Award. He previously directed the UTHealth Houston Center for Eating Disorders, a comprehensive program in the Texas Medical Center offering outpatient, intensive outpatient (IOP), partial hospitalization (PHP), and inpatient care for adolescents and adults with anorexia nervosa, bulimia nervosa, ARFID, and OCD that impacts food and eating.

Dr. Appenzeller has trained under some of the foremost leaders in the field who shaped his deep appreciation for the science, and art of evidence-based treatment. He completed his predoctoral internship at Ascension Alexian Brothers Behavioral Health Hospital’s Center for Anxiety and OCD and Center for Eating Disorders, followed by an NIH-funded postdoctoral fellowship at Baylor College of Medicine’s Menninger Department of Psychiatry and Behavioral Sciences' OCD and Related Disorders Program. Prior experiences span OCD specialty clinics, DBT programs, hospitals, residential treatment, schools, a university child development clinic, outpatient rehabilitation, and other premier CBT practices across the Washington, DC area.