Center Faculty

Sabine Wilhelm, Ph.D., is a Professor at Harvard Medical School (HMS), Donovan-Chien Family Professor in the Field of Psychology at Harvard Medical School, Chief of Psychology at Massachusetts General Hospital (MGH), Director of the Center for Obsessive Compulsive and Related Disorders (CORD) at MGH, and Director of the Center for Digital Mental Health in Psychiatry at MGH.

Dr. Wilhelm is recognized as a leading researcher in obsessive-compulsive and related disorders (OCRD). Her recent research focuses on using cutting-edge technology to improve and personalize mental health care for a range of mental health concerns. She is currently working on the development and testing of smartphone-based treatments for OCD, depression, and body dysmorphic disorder. Her ultimate goal is to use technology-based interventions to enhance global access to high-quality mental health interventions.

Dr. Wilhelm has published 350 papers and chapters, as well as nine books. She has also given around 300 talks on these subjects, locally, nationally, and internationally. Dr. Wilhelm has mentored more than 50 junior investigators in the field. She has been the principal investigator of numerous NIMH-and foundation funded clinical research grants investigating medication, cognitive-behavioral therapy, digital services, and other treatments for a range of psychiatric disorders in children and adults.

Dr. Wilhelm is the Chair of the Scientific Advisory Board of the International OCD Foundation. She serves on the Scientific Council for the Anxiety and Depression Association of America and the Tourette Syndrome Association Behavioral Science Consortium.  She is the past president of the Association for Behavioral and Cognitive Therapies (ABCT) and was an Associate Editor for the journals Depression and Anxiety and Behavior Therapy.  Dr. Wilhelm currently serves on seven editorial boards. She was the Scientific Program Chair of the World Congress of Behavioral and Cognitive Therapies held in Boston in June 2010. Additionally, Dr. Wilhelm is a fellow of the Association for Psychological Science.  Dr. Wilhelm received many awards for her work, including the distinguished Aaron T. Beck Award from the Academy of Cognitive Therapy.  She was also awarded the Peter K. Ranney Innovation Award from the World Medical Innovation Forum and she is the recipient of the 2023 NAMI Scientific Research Award.

Natasha Bailen, Ph.D., is a staff psychologist in the Center for OCD and Related Disorders (CORD) at Massachusetts General Hospital and Harvard Medical School. Dr. Bailen received her PhD in clinical psychology from Washington University in St. Louis, and completed her clinical internship at University of Chicago Medicine. She completed her postdoctoral training at Boston University’s Center for Anxiety and Related Disorders (CARD). She is a licensed clinical psychologist in the state of Massachusetts and specializes in the cognitive-behavioral treatment of OCD, anxiety, and related disorders. Her research focuses on the role of dysregulated emotional processes in psychopathology.

Emily Bernstein, PhD is an Assistant Professor at Harvard Medical School (HMS) and a staff psychologist in the Center for OCD and Related Disorders (CORD) at Massachusetts General Hospital (MGH). Dr. Bernstein received her bachelor’s degree from Yale University and her PhD in clinical psychology from Harvard University. She completed her clinical internship at VA Boston Healthcare System and postdoctoral training at MGH/HMS and is a licensed psychologist in the state of Massachusetts. Dr. Bernstein’s research is focused on developing alternative and more scalable approaches for the prevention and treatment of OCD and related disorders, anxiety disorders, depression, and other emotional concerns. This includes exploring exercise and other lifestyle interventions and brief cognitive behavioral treatments, as well as leveraging digital tools to bring evidence-based therapy to more people. In this pursuit, she also aims to understand why psychological interventions work, and particularly transdiagnostic ones (or those targeting processes that cut across emotional disorders, like perseverative negative thinking), and to use these insights to increase the efficiency and impact of treatments. Dr. Bernstein was a 2022 recipient of the Anxiety and Depression Association of America (ADAA) Alies Muskin Career Development Leadership Program Award and member of the Career Development Institute for Psychiatry.

Sarah Coe-Odess, PhD is a staff psychologist in the Center for OCD and Related Disorders (CORD) and an Instructor in Psychology (Psychiatry) at Harvard Medical School (HMS). She is also a staff psychologist in MGH’s Child Cognitive-Behavioral Therapy (CBT) Program. Dr. Coe-Odess received her PhD in clinical psychology from the University of Virginia. She completed her clinical internship at Cambridge Health Alliance/HMS and her post-doctoral fellowship at MGH/HMS. She is a licensed clinical psychologist in the state of Massachusetts and specializes in cognitive-behavioral therapy for OCD and related disorders and anxiety disorders. Her research aims to assess and develop evidence-based treatments to increase accessibility of mental health care for adolescents and adults, particularly through digital interventions.

Maria Lynn Buttholph, M.D., has been a staff psychiatrist and member of the Center for OCD and Related Disorders (CORD) since 1988. She participated in the original clinical trials that helped to determine effective medications for the treatment of OCD. She has treated a large number of patients with OCD, as well as OCD spectrum disorders including trichotillomania. She has published numerous papers and has written a chapter about OCD and pregnancy. She is an Instructor at the Harvard Medical School and at the Massachusetts General Hospital.

Publications by Dr. Buttholph

Dr. Camprodon is Chief of the Division of Neuropsychiatry at Massachusetts General Hospital and Assistant Professor of Psychiatry at Harvard Medical School.

Clinically, he is the founding director of the MGH Transcranial Magnetic Stimulation (TMS) clinical service, a member of the Psychiatric Neurosurgery Committee and an attending physician in the departments of Psychiatry (Neuropsychiatry) and Neurology (Cognitive and Behavioral Neurology). He is board-certified in Psychiatry and Behavioral Neurology & Neuropsychiatry.

Anne Chosak, Ph.D., is Director of Psychological Services at the Center for OCD and Related Disorders (CORD), and Director of the CBT Program at Massachusetts General Hospital (MGH). She is a staff psychologist at MGH and Assistant Professor (part-time) at Harvard Medical School. Dr. Chosak received her Ph.D. in clinical psychology from SUNY at Albany in 2000. She received her post-doctoral training at CORD and was licensed in 2002. Dr. Chosak’s clinical and research background was in the anxiety disorders of adulthood, and her current clinical and research interests are in the OCD spectrum disorders of adulthood. Dr. Chosak serves on the Clinical Psychology Internship Training Committee at MGH.

Publications by Dr. Chosak

Dr. Darin D. Dougherty is the Medical Director of the Obsessive-Compulsive Disorder Institute at McLean Hospital, the Director of the Neurotherapeutics Division in the Department of Psychiatry at MGH, the Director of the Mood Disorders Section of the Massachusetts General Hospital Psychiatric Neuroimaging Group, and the Associate Director of the Massachusetts General Hospital Psychiatric Neuroimaging Group. Dr. Dougherty is also the Director of Medical Education at the Massachusetts General Hospital Obsessive-Compulsive Disorder Institute and the Co-Director of the Massachusetts General Hospital Trichotillomania Clinic. Additionally, Dr. Dougherty is an Associate Professor of Psychiatry at Harvard Medical School, a Clinical Associate at Massachusetts General Hospital and a Visiting Scientist at Massachusetts Institute of Technology.

Publications by Dr. Dougherty

Daniel Geller MBBS FRACP is the Founder and Director of Research at the Massachusetts General Hospital (MGH) Pediatric Psychiatry Obsessive-Compulsive and Tic Disorder (OCD/Tic) Clinical and Research Program. His research career has been devoted to the study of pediatric OCD and related disorders, their phenotypes, clinical correlates, familial patterns of inheritance, and treatment. He authored the American Academy of Child and Adolescent Psychiatry Practice Parameters for the Assessment and Treatment of OCD in Children and Adolescents which documents the standard of care for management of early onset OCD in the USA. He received a NIMH career development award to conduct a family genetic study of pediatric OCD and subsequently assembled one of the largest cohorts of subjects ever studied, recruiting over 500 participants and publishing extensively on the findings. Early in the history of Pediatric Neuropsychiatric Disorder Associated with Streptococcus (PANDAS), he was an investigator in the NIH-funded Tourette Syndrome Study group, a 2-year prospective controlled study of youth with PANDAS. He has been a site investigator for numerous industry and investigator-initiated drug trials since 1991 for pediatric OCD, Tourette’s syndrome, attention deficit hyperactivity disorder (ADHD), anxiety and depression, including nearly all of the original pharmacotherapy registration trials for pediatric OCD. Dr. Geller has also been principal investigator or co-investigator in a number of NIH-funded grants, including the OCD Collaborative Genetics study. He is a triple board-certified pediatrician, psychiatrist and child psychiatrist, a Distinguished Fellow of the American Academy of Child and Adolescent Psychiatry, Fellow of both the American and European College of Neuropsychopharmacology, and an executive board member of the International College of Obsessive Compulsive and Related Disorders. Since 2013, he has held the Mittelman Family Chair in Child and Adolescent Psychiatry at MGH.  He has been voted a Best of Boston child psychiatrist every year since 2012.

Publications by Dr. Geller

Erica Greenberg, M.D., is the Director of the Pediatric Psychiatry OCD and Tic Disorders Program at MGH and a Co-Director of the Tourette Association of America MGH Center of Excellence. Dr. Greenberg is a Psychiatrist at Massachusetts General Hospital (MGH) and an Instructor in Psychiatry at Harvard Medical School (HMS). She graduated from Weill Cornell Medical College (with Alpha Omega Alpha honors), and completed her general psychiatry residency at Harvard Longwood and her child/adolescent fellowship training at Massachusetts General Hospital/McLean where she served as chief resident in both programs. Her interests include Tourette syndrome (TS), OCD, “Tourettic OCD,” ADHD and body-focused repetitive behavior disorders (BFRBs). She is the primary investigator on a grant-funded study evaluating a modified behavioral treatment approach to those with tic disorders and ADHD, and she has authored several peer-reviewed articles and chapters on Tourette syndrome, OCD, and related disorders Additionally, she has presented locally and nationally on TS, OCD and BFRBs. Dr. Greenberg is also the HMS Director of the Klingenstein Fellowship – a philanthropic medical student program that encourages interest and exploration of child and adolescent psychiatry through mentoring, teaching, research opportunities and events.

Jennifer L. Greenberg, Psy.D., Director of Translational Research at the Center for OCD and Related Disorders (CORD), Assistant in Psychology (Psychiatry) at the Massachusetts General Hospital, and Assistant Professor of Psychology (Psychiatry) at Harvard Medical School. Dr. Greenberg received her Psy.D. in Clinical Psychology from Rutgers, the State University of New Jersey in 2008. She completed her clinical internship and postdoctoral training at Massachusetts General Hospital/Harvard Medical School. Dr. Greenberg is a licensed clinical psychologist and sees patients through CORD at the Massachusetts General Hospital and in private practice. Her clinical and research background is in the cognitive-behavioral treatment of body image and obsessive compulsive spectrum disorders across the lifespan, with an emphasis on BDD. Her primary research interest resides in treatment outcome and cognitive risk factors that may play a role in the etiology and maintenance of these disorders. Clinically, she treats adolescents and adults with obsessive-compulsive spectrum disorders, including BDD and OCD, and eating disorders.

Publications by Dr. Greenberg

Brynn Huguenel, PhD is a staff psychologist in the Center for OCD and Related Disorders (CORD) at Massachusetts General Hospital (MGH) and an Instructor in Psychology (Psychiatry) at Harvard Medical School (HMS). She is also a staff psychologist on MGH’s inpatient psychiatric unit (Blake 11) and in the Psychological Evaluation and Research Lab (PEaRL). Dr. Huguenel received her PhD in clinical psychology from Loyola University Chicago. She completed both her clinical internship and post-doctoral fellowship at MGH/HMS. She is a licensed clinical psychologist in the state of Massachusetts and specializes in cognitive-behavioral therapy for OCD and related disorders, as well as anxiety more broadly. Dr. Huguenel’s research aims to improve the accessibility of evidence-based mental health treatment through the development, implementation, and evaluation of intervention programs, particularly digital technologies.

Susanne S. Hoeppner, Ph.D., M.Ap.Stat, is a biostatistician and epidemiologist at the Center for OCD and Related Disorders (CORD) and an Assistant Investigator in Psychology (Psychiatry) at the Massachusetts General Hospital/Harvard Medical School.  Dr. Hoeppner received her Ph.D. in Oceanography and Coastal Sciences and her Master in Applied Statistics from Louisiana State University and conducted three years of post-doctoral research in climate change ecology at the University of Massachusetts Boston and Purdue University.  With more than 12 years of experience in research and clinical investigation, she has extensive training and expertise in experimental design, statistical analysis and simulation modeling.  Dr. Hoeppner’s clinical interests are in dynamic health behavior modeling and positive psychology.  She has served as the principal statistician on pivotal trials approved by the FDA and has designed and analyzed Phase I-III studies in addiction, psychiatry, and psychology.  She also has ample experience setting up, updating, and overseeing the use of electronic data capture forms as implemented via REDCap, having designed and managed such databases for several single- and multi-site clinical trials at MGH, and routinely trains and advises research assistants, data managers, and clinical staff on principles of good clinical practice.

Ryan Jane Jacoby, Ph.D. is a staff psychologist at the Center for OCD and Related Disorders (CORD) at Massachusetts General Hospital (MGH) and an Assistant Professor of Psychology (Psychiatry) at Harvard Medical School (HMS). Dr. Jacoby completed her undergraduate studies at Williams College and her Ph.D. in Clinical Psychology at the University of North Carolina at Chapel Hill. She completed her clinical internship and post-doctoral training at MGH/HMS. Dr. Jacoby is a licensed clinical psychologist who sees patients through CORD. Her clinical and research interests are broadly focused on the nature and treatment of OCD and anxiety disorders, including specific interests in psychological mechanisms of change in exposure-based therapies as well as treatment augmentation strategies that capitalize on these mechanisms (e.g., inhibitory learning approaches, repetitive negative thinking). She is also interested in improving the understanding and behavioral/psychophysiological measurement of transdiagnostic psychological processes (e.g., intolerance of uncertainty, attentional/cognitive control) utilizing multi-method approaches (e.g., attentional disengagement eye-tracking tasks, behavioral economic decision-making paradigms, biometric indices of autonomic arousal). Dr. Jacoby is currently funded by a Career Development Award (K23) from the National Institute of Mental Health examining attentional/cognitive control as a mechanism in the transdiagnostic treatment of repetitive negative thinking. She was a 2017 recipient of the International OCD Foundation (IOCDF) Young Investigator Research Award and a 2018 recipient of the Anxiety and Depression Association of America (ADAA) Alies Muskin Career Development Leadership Program Award.

Publications by Dr. Jacoby

Adam Jaroszewski, Ph.D. is an Instructor at Harvard Medical School (HMS) and a Staff Psychologist in the Center for OCD and Related Disorders at Massachusetts General Hospital (MGH). He completed his doctorate in clinical psychology at Harvard University and clinical internship and postdoctoral fellowship a MGH/HMS. Dr. Jaroszewski is a licensed psychologist in the state of Massachusetts, whose clinical work focuses on the treatment of OCD and related disorders as well as anxiety and depression. His research focuses on examining the cognitive and affective factors that increase risk for the development and maintenance of self-injurious thoughts and behavior (SITB). He is particularly interested in using approaches from decision and affective science to understand why people decide to engage in SITB. He is also involved in developing scalable, smartphone delivered interventions for SITB and associated disorders (e.g., depression, BDD).

Nancy Keuthen, Ph.D., is an Associate Professor of Psychology (Psychiatry) at Harvard Medical School and Massachusetts General Hospital (MGH), Co-Founder and Director of the MGH Trichotillomania Clinic & Research Unit, and Chief Psychologist in the Center for OCD and Related Disorders (CORD). Dr. Keuthen received her Ph.D. in clinical psychology from SUNY at Stony Brook. She is internationally recognized as a leading clinician and researcher in trichotillomania. She has been instrumental in establishing awareness of and improving treatment for this disorder. Dr. Keuthen serves on numerous editorial and advisory boards, including the Scientific Advisory Boards of the Trichotillomania Learning Center and the Obsessive-Compulsive Foundation. Her clinical, research and teaching contributions have been largely focused on the cognitive-behavioral and pharmacological treatment of OCD and OCD-spectrum disorders, including skin picking, body dysmorphic disorder (BDD), and trichotillomania. She has authored numerous journal articles and book chapters and co-authored the popular book Help for Hairpullers.

Publications by Dr. Keuthen

Jennifer Ragan, Ph.D., Associate Director of the Adult Intensive Cognitive Behavioral Treatment Program.  She is staff psychologist at Massachusetts General Hospital and an Instructor in Psychology (Psychiatry) at Harvard Medical School. Dr. Ragan received her Ph.D. in Clinical Psychology from the University of Texas at Austin in 2005. There, Dr. Ragan received extensive training in cognitive-behavioral therapy and provided supervision to junior clinicians through Dr. Michael Telch’s Anxiety Research Lab at the University of Texas at Austin. She then completed her clinical internship and post-doctoral training through Massachusetts General Hospital/Harvard Medical School. Dr. Ragan is now a licensed psychologist and sees patients through the Center for OCD and Related Disorders (CORD) at Massachusetts General Hospital and in private practice. Her clinical interests are broad, in that she treats patients suffering from anxiety, mood, and eating disorders using both individual and group modalities. Her research interests center around the assessment and treatment of anxiety disorders, Obsessive Compulsive Disorder, and Body Dysmorphic Disorder.

Publications by Dr. Ragan

Jessica Rasmussen, Ph.D., is an Assistant in Psychology (Psychiatry) at Massachusetts General Hospital and an Instructor in Psychology at Harvard Medical School. During graduate school, Dr. Rasmussen received cognitive-behavioral training in the treatment of anxiety and mood disorders, as well as specialized training in the treatment of compulsive hoarding. Her research interests focus on the etiology, maintenance and treatment of compulsive hoarding and OCD.  She also specializes in the cognitive-behavioral treatment of obsessive-compulsive disorders and body dysmorphic disorder.

Publications by Dr. Rasmussen

Dr. Josh Salvi is a psychiatrist at the MGH Center for OCD and Related Disorders, an Associate Program Director of the MGH/McLean Psychiatry Residency Program, Director of the Physician Scientist Training Program (PSTP) in Psychiatry, and an Investigator at the MGH Translational Research Center. Dr. Salvi also teaches medical students in multiple capacities at Harvard Medical School. Dr. Salvi earned his Ph.D. in Neuroscience from The Rockefeller University in the Laboratory of Sensory Neuroscience with A. James Hudspeth. He graduated from Weill Cornell Medical College and has received various awards, including the Gold Humanism Honor Society’s Humanism in Medicine Award, the John Metcalf Polk Prize for academic achievement in medical school, the American Psychiatric Association’s Leadership Fellowship, the NIMH Outstanding Resident Award Program, the Broad Institute’s Pamela Sklar Fellowship for psychiatric research. He has a research interest in behavioral and genetic studies in OCD and is thrilled to continue clinical work in the same area.

Dr. Scharf is a behavioral neurologist and neuropsychiatric geneticist who works at the interface between neurology and psychiatry, employing statistical and molecular genetics techniques along with clinical research tools to investigate the etiology and pathogenesis of Tourette Syndrome (TS), OCD and related disorders as model neuropsychiatric illnesses. Clinically, Dr. Scharf directs the Neurology Tic Disorders Unit within the MGH Division of Movement Disorders, and is Co-Director of the MGH TAA National TS Center of Excellence in partnership with Dr. Sabine Wilhelm in MGH Psychiatry.

Ivar Snorrason, Ph.D., is a staff psychologist at the Center for OCD and Related Disorders (CORD) at Massachusetts General Hospital (MGH) and an Instructor in Psychology (Psychiatry) at Harvard Medical School (HMS).  Dr. Snorrason completed his bachelor and master’s degrees in psychology at the University of Iceland, and a Ph.D. in clinical psychology at the University of Wisconsin-Milwaukee.

Dr. Snorrason completed post-doctoral training at the New York State Psychiatric Institute/Columbia University Medical School and at McLean Hospital.  He is a licensed clinical psychologist and specializes in the treatment of OCD and related disorders.  His research focuses on the etiology, nosology and treatment of obsessive-compulsive and related disorders, including trichotillomania (hair-pulling disorder) and excoriation (skin-picking) disorder.

Aisha Usmani, Ph.D., is the Director of the Adult Intensive Cognitive Behavioral Treatment Program and staff psychologist at the Center for OCD and Related Disorders (CORD) at Massachusetts General Hospital & Harvard Medical School. She is also an Assistant Professor in Psychology (Psychiatry) at Harvard Medical School. Dr. Usmani specializes in the cognitive-behavioral treatment of anxiety disorders, OCD and OCD spectrum disorders, including tic disorders, body-focused repetitive behaviors, including trichotillomania and skin picking, and other related disorders. Her research experiences include management of research programs and providing assessment and protocol-based treatment for studies, including an RO1 grant. She also enjoys supervising clinical psychology graduate and postdoctoral students. Dr. Usmani completed her postdoctoral fellowships at the Center for Anxiety and Related Disorders (CARD) at Boston University and The Evidence Based Treatment Centers of Seattle (EBTCS), where she gained expertise in evidence-based, cognitive-behavioral therapy, including acceptance and mindfulness-based treatments. She received her Ph.D. in Clinical Psychology from Idaho State University, where she focused on cognitive-behavioral treatments.

Publications by Dr. Usmani

Hilary Weingarden, PhD is an Assistant Professor at Harvard Medical School (HMS) and a staff psychologist in the Center for OCD and Related Disorders (CORD) at Massachusetts General Hospital (MGH). Dr. Weingarden received her bachelor’s degree from Tufts University and her PhD in clinical psychology from George Mason University. She completed her clinical internship and postdoctoral training at MGH/HMS and is a licensed psychologist in the state of Massachusetts. Dr. Weingarden’s research is focused on cognitive and emotional risk factors for adverse outcomes such as suicide risk in OCD and body dysmorphic disorder (BDD). Her research also focuses on applying technology to enhance assessment of and interventions for OCD and related disorders. Her work is currently supported by a Career Development Award (K23) from the National Institute of Mental Health. In addition to NIMH, Dr. Weingarden’s work has been funded as Principal Investigator or co-Investigator by Harvard Medical School and industry collaborations, and she was a 2019 recipient of the Association for Psychological Science’s (APS) Rising Star Award. In addition to her work at MGH, Dr. Weingarden has a private practice where she provides evidence-based psychological treatments for adults with OCD and related disorders. 

Publications by Dr. Weingarden

Dr. Lisa Zakhary is the Medical Director of the Massachusetts General Hospital (MGH) Center for OCD and Related Disorders (CORD) and Director of Pharmacology in the MGH Excoriation Clinic and Research Unit. She graduated from Harvard Medical School and completed her general adult psychiatry residency at MGH/McLean. Additionally, she earned a Ph.D. in molecular neurobiology and completed the Boston Psychoanalytic Society & Institute Fellowship during her medical training. She is Assistant in Psychiatry at MGH and Instructor in Psychiatry at Harvard Medical School. She specializes in providing medication treatments to individuals with OCD and related disorders. Additionally, Dr. Zakhary has a special interest in psychodermatology and as a resident, co-founded the MGH Comprehensive Skin Management Clinic, a psychiatry/dermatology clinic providing multi-disciplinary treatment to individuals with a variety of psychodermatologic conditions including compulsive skin picking, trichotillomania, and body dysmorphic disorder. As staff, she continues to explore ways to optimize psychodermatologic treatment through collaboration, education, and research. Her current research is focused on evaluating novel treatments for trichotillomania.

Publications by Dr. Zakhary