Our Team

The Eating and Weight Disorders Program is comprised of a multidisciplinary team including psychiatrists, clinical psychologists, and mental health clinicians who conduct research on feeding and eating disorders and provide cutting edge, evidence based treatments for individuals struggling with feeding and eating disorders.

Administrative Secretary:  Crystal Keene
Clinic Coordinators: Ashley Heywood and Daniel Wesley 

Tom Hildebrandt, PsyD, FAED is the Chief of the Division of Eating & Weight Disorders (Center of Excellence) at Mount Sinai and an Associate Professor of Psychiatry at the Icahn School of Medicine at Mount Sinai. He completed his graduate training at Rutgers University and his post-doctoral fellowship at the Icahn School of Medicine at Mount Sinai. He is an active clinician and currently oversees the development and execution of both the clinical and research programs.

Dr. Hildebrandt has a wide range of research interests and clinical expertise in specific populations including adolescents, men/boys with eating disorders, addictive disorders, and anabolic-androgenic steroid users.  He and his colleagues have developed and tested a range of treatments for these populations including mirror exposure therapy, exposure-based family therapy (FBT-E), and CBT-based smartphone applications for binge eating.  He has co-developed coursework for psychiatry residents in CBT and taught an annual course on CBT for eating disorders for the past 10 years.   

Dr. Hildebrandt has co-authored over 70 publications and 50 presentations on body image, eating disorders, obesity, family based treatments, and anabolic steroid use. He is an Associate Editor for Body Image: An International Journal of Research, serves on the editorial boards of several other peer-reviewed journals including Behaviour Research and Therapy and Lancet Psychiatry and was formerly the co-chair of the Male Special Interest Group and Special Interest Group Oversight Committee for the Academy for Eating Disorders.  In 2013 he elected to be a Fellow of the Academy of Eating Disorders. His specific research interests involve the development and evaluation of new treatments for eating disorders that utilizes emerging biological evidence about causes and maintaining factors associated with eating and addiction.

Robyn Sysko, PhD is the Director of Research at the Eating and Weight Disorders Program at Mount Sinai and an Assistant Professor of Psychiatry at the Icahn School of Medicine at Mount Sinai. She completed her graduate training at Rutgers University and a post-doctoral fellowship at the Columbia University College of Physicians & Surgeons/New York State Psychiatric Institute.

Dr. Sysko’s research and clinical expertise include eating disorders and bariatric surgery, and she has co-authored a number of publications and presentations on these topics. In particular, her work focuses on the measurement of eating behavior, the co-occurrence of eating and alcohol use disorders, diagnostic issues in eating disorders, and the pre- and post-operative psychiatric functioning of individuals receiving bariatric surgery. She has funding from the National Institute of Diabetes and Digestive and Kidney Diseases to examine the relationship between weight, mood, and quality of life among adolescents enrolled in a bariatric surgery program.

Rebecca Greif, PsyD is the Program Director of Outpatient Services and Training Director at the Eating and Weight Disorders Program.  She is also an Assistant Professor of Psychiatry at the Icahn School of Medicine at Mount Sinai.  Dr. Greif received her undergraduate degree from Duke University and her doctorate in clinical psychology from Rutgers University.  She also completed a one year clinical internship at Montefiore Medical Center and a two year postdoctoral fellowship at the Icahn School of Medicine at Mount Sinai. Dr. Greif has received specialized training in treatments for eating disorders, including cognitive behavioral therapy (CBT) and Maudsley Family Therapy, as well as an eating disorder prevention program entitled "The Body Project."  In addition to her expertise in eating disorders, Dr. Greif has received extensive training in evidence-based treatments for children, adolescents, and adults with mood and anxiety disorders as well as extensive training in dialectical behavior therapy (DBT).  Dr. Greif espouses a collaborative and empathic approach to clinical work and develops individualized treatment plans based on each person’s unique needs.  

Dr. Greif's research interests focus on the advancement and dissemination of empirically supported treatments and she has published several papers in the field of eating disorders. In 2009, Dr. Greif received the Academy for Eating Disorders Early Career Investigator Travel Fellowship and in 2012 she was awarded an Aaron T. Beck Scholarship for Cognitive Therapy.  Dr. Greif also teaches and supervises graduate students and psychiatry residents in CBT.

Melanie Brown, PhD is a Licensed Clinical Psychologist and Postdoctoral Fellow in the Eating and Weight Disorders Program at Mount Sinai. Dr. Brown received her Bachelor of Science degree in Computer Science and Economics from Duke University, her Master’s degree in Psychology from Fairfield University, and her doctorate in Clinical Psychology from Fairleigh Dickinson University. She started her training in the Mount Sinai Eating and Weight Disorders Program in 2009 as a doctoral candidate. After completing her PhD, including clinical internship in child/adolescent psychology at Kings County Hospital Center in Brooklyn, NY, she joined the team at Mount Sinai as a Fellow in 2016.

Dr. Brown specializes in treating children and adolescents and has expertise in Maudsley Family-Based Therapy (FBT) for youth.  She also has extensive training and experience in Cognitive Behavioral Therapy (CBT) for eating and anxiety disorders.

Dr. Brown’s research interests focus on investigating cognition, decision-making, and the neuronal basis of anxiety in eating disorders using neuropsychological measures and neuroimaging. Her current research interest centers on extending neuroeconomic models of decision-making to food choice and food avoidance in low weight eating disorders. She received the Guterman-FitzSimons Fellowship for Excellence in Research in 2011 and has co-authored numerous publications on eating disorders in children, adolescents, and diverse populations. 

Keren Fink, PsyD is an Assistant Professor of Psychiatry at the Icahn School of Medicine at Mount Sinai. Keren received her Doctorate of Clinical Psychology and Masters of Science from the University of Sydney, Australia, and subsequently worked as a licensed clinical psychologist at Westmead Children’s Hospital in Sydney, Australia. She has significant clinical and research experience treating eating disorders and their associated mental health difficulties in both adolescent and adult populations. Keren also has specialised training in Maudsley Family Based Treatment and Cognitive Behavioural Therapy for anorexia nervosa and a range of other eating disorders. Her research has specifically involved looking at family-based hospital admissions as a treatment adjunct for adolescents with anorexia nervosa who have had previous difficulty succeeding with outpatient treatment.

Lisa Mikus, RD, CNSC, CDN is a Registered Dietitian and author specializing in the treatment of eating disorders. As the Nutrition Coordinator at Mount Sinai's Eating and Weight Disorders Program, Lisa counsels families, adolescents, and young adults struggling with eating disorders. Lisa also has experience counseling clients with diabetes and weight management issues. Lisa attended the University of Texas at Austin and earned a Bachelor of Science degree in the Didactic Program in Dietetics as well as completed over 1200 hours of supervised practice through the University of Texas Coordinated Program in Dietetics dietetic internship.

As a Certified Nutrition Support Clinician (CNSC), Lisa has worked as a clinical dietitian in acute and intensive care units in both Houston, Texas, and New York City. She uses her strong clinical skills to support her true passion of counseling clients in the outpatient setting.Lisa works in coordination with the psychologists at the EWDP to help her clients meet their nutrition-focused treatment goals. She strives to make each client feel comfortable and understood and approaches each session with an energetic and positive outlook.

Lisa is a member of the Academy of Nutrition and Dietetics (AND) and of the International Association of Eating Disorder Professionals (IAEDP). Professionally, she is currently pursuing becoming credentialed as a Certified Eating Disorder Registered Dietitian (CEDRD) and Certified Diabetes Educator (CDE). 

Terri Bacow, PhD is Senior Psychologist at the Eating and Weight Disorders Program and Instructor of Psychiatry at the Icahn School of Medicine at Mount Sinai. She is a Brown University graduate and received her doctorate in Clinical Psychology from Boston University.

Dr. Bacow completed her internship in clinical psychology at Long Island Jewish Medical Center on the Child and Adolescent Track. Her specialties include cognitive-behavioral therapy for mood, anxiety, and eating disorders, as well as Maudsley Family Therapy. Dr. Bacow's research interests include the study of factors that contribute to the effectiveness of eating disorders treatment in youth, and she has published several papers related to child and adolescent issues. She has also been a special lecturer for psychiatry residents at Mount Sinai in cognitive-behavioral therapy, and is recognized as one of the few experts qualified to teach cognitive-behavioral therapy across the age spectrum.

Eva Naumann, PhD is a Visiting Research Fellow at the Eating and Weight Disorders Program (EWDP) at Mount Sinai. She completed her graduate training at the University of Marburg and worked as a research assistant at the University of Freiburg. She received her doctorate in Clinical Psychology from the University of Tuebingen and her license as a psychotherapist from FAVT in Freiburg, Germany.

Dr. Naumannn’s research interests focus on body image and emotion regulation in eating disorders. She has published several papers in this field. In 2013 she was awarded the Christina-Barz scholarship to conduct a study at the EWDP on the augmentative effects of d-cycloserine on mirror exposure therapy.