Staff Members
Dr. Robert L. Leahy
B.A., M.S., Ph.D., Yale University, Director,
Dr. Leahy Completed a Postdoctoral Fellowship in the Department of Psychiatry, University of Pennsylvania Medical School…
Dr. Brianne Dickey
Ph.D. licensed Psychologist
Brianne Dickey, Ph.D., is a New York State licensed psychologist at the American Institute for Cognitive Therapy…
Dr. Nicholas Demas
Ph.D., Licensed Psychologist
Nicholas Demas, Ph.D., is a New York State licensed psychologist with a broad range of experience in cognitive behavioral therapy…
Dr. Allison Funk
Ph.D., Psychologist
Allison Funk, Ph.D., is a Postdoctoral Fellow at the American Institute for Cognitive Therapy. She received her Bachelor’s degree…
Dr. Melissa Horowitz
PsyD, Director of Clinical Training, Body Image and Eating Disorders
Dr. Horowitz is a New York State licensed psychologist with extensive experience in cognitive behavior therapy (CBT), dialectical behavior…
Dr. Aspasia Hotzoglou
Ph.D., Licensed Psychologist
Dr. Hotzoglou is a licensed psychologist at the American Institute for Cognitive Therapy. She is trained in cognitive behavioral therapies…
Ph.D., Director of Child and Adolescent Program
Dr. Paula is a New York State licensed psychologist with extensive experience in cognitive behavior therapy (CBT), dialectical behavior…
Dr. Kathleen Mattran Taylor
Ph.D., DBT Program Coordinator, Clinican
Dr. Westphal is a licensed psychologist who received her B.A. (Honors) in Social and Political Sciences from the University of…
Dr. Peggilee Wupperman
Ph.D. (University of North Texas), Clinician
Dr. Maren Westphal
Ph.D., Clinician
Dr. Wupperman is a New York State licensed psychologist who is currently an associate professor at John Jay College/City University of…
Helen Butleroff Leahy
RD, CDN
Ms. Leahy offers nutrition counseling specializing in weight management, eating disorders, Type II Diabetes, GERD, IBS and medical…
Jane Kaiser
Research & Editorial Assistant
Jane Kaiser is a senior at Barnard College at Columbia University. After she completes her Bachelor’s degree in Psychology in May 2022…
Betty Gibbs
Clinical Intake Coordinator
Betty Gibbs is a Clinical Intake Coordinator and She graduated from the University of Michigan in 2024 with a degree in Biopsychology…
Betty Gibbs
Clinical Intake Coordinator
Betty Gibbs is a Clinical Intake Coordinator and She graduated from the University of Michigan in 2024 with a degree in Biopsychology…
Yuechen Sun
Clinical Intern
Yuechen Sun is a graduating senior at Barnard College majoring in psychology. She plans to pursue graduate…
Celia Ziliak
Clinical Intern
Celia Ziliak is a senior at Barnard College of Columbia University studying Psychology and Women’s, Gender, & Sexuality Studies…
Dr. Graham Reynolds
Ph.D., Director of Anxiety and Obsessive Compulsive Treatment Program,
Dr. Reynolds is a New York State licensed psychologist with a broad range of experience in cognitive behavioral psychology…
Dr. Kathleen Mattran Taylor
Ph.D., DBT Program Coordinator, Clinican
Dr. Taylor is a licensed psychologist in New York. Dr Taylor creates a collaborative therapeutic process that is focused on how to …
Dr. Maren Westphal
Ph.D., Clinician
Dr. Westphal is a licensed psychologist who received her B.A. (Honors) in Social and Political Sciences from the University of…
Dr. Peggilee Wupperman
Ph.D. (University of North Texas), Clinician
Dr. Wupperman is a New York State licensed psychologist who is currently an associate professor at John Jay College/City University of…
Ph.D., Associate Director of the American Institute for Cognitive Therapy
Dr. Oliff is a New York State licensed psychologist, Founding Fellow and Diplomate of the Academy of Cognitive Therapy and a membe…
B.A. Research and Editorial Assistant
Ms. Silber received her Bachelor’s degree in Psychology from Barnard College at Columbia University in 2021…
B.A., Intake Coordinator / Research Assistant
Ms. Johnson received her Bachelor of Arts from Barnard College in 2020. Before joining the American Institute…