About CABT

The Center for Anxiety & Behavior Therapy offers empirically-supported treatment for anxiety disorders including obsessive-compulsive disorder (OCD), post-traumatic stress disorder (PTSD), social anxiety disorder, panic disorder, specific phobias, and generalized anxiety disorder. We also specialize in the dissemination of these treatments through workshops and expert consultation to other mental health professionals and agencies.


Steven D. Tsao, Ph.D.


Dr. Tsao is an expert in exposure and response prevention (EXRP) for obsessive compulsive disorder (OCD), having trained under several internationally-recognized leaders in the field including Dr. Edna Foa, Dr. Michael Jenike, and Dr. Dean McKay. Dr. Tsao has treated hundreds of clients with OCD, given regional and national presentations on OCD, and been featured on several popular media outlets including ABC’s 20/20, WBUR, WGBH, Prevention Magazine, and Health.com. Dr. Tsao also has extensive experience with prolonged exposure (PE) therapy for posttraumtaic stress disorder (PTSD) and is a certified therapist and supervisor by Dr. Edna Foa, the developer of PE. He has helped train PE therapists both nationally and internationally and provided expert consultation on PE for grants funded by the Department of Defense. Dr. Tsao received his Ph.D. in clinical psychology from Fordham University where he was the recipient of Senior Teaching Fellowship and the Alumni Dissertation Fellowship. Dr. Tsao completed his predoctoral internship at Boston University School of Medicine/Boston VA Medical Center and his postdoctoral fellowship at Harvard Medical School/McLean Hospital. He worked at a residential eating disorders program where he developed and implemented a specialized track for patients with OCD and later, focused exclusively on severe and treatment-resistant OCD and OC-spectrum disorders during his years as a Staff Psychologist at the OCD Institute at McLean Hospital. After relocating to the Philadelphia area, Dr. Tsao joined the Center for the Treatment and Study of Anxiety at the University of Pennsylvania where he most recently served as the Clinic Director.  Dr. Tsao also served as the Assistant Clinical Director at Rogers Behavioral Health-Philadelphia, where he helped launch and oversee the delivery of evidence-based treatment for anxiety and mood disorders in an intensive day treatment setting.


David Yusko, Psy.D.


Dr. Yusko is nationally recognized as an expert in prolonged exposure (PE) therapy for posttraumatic stress disorder (PTSD) and is a certified PE therapist and supervisor by Dr. Edna Foa. Dr. Yusko is also an expert in anxiety disorders with particular expertise in obsessive compulsive disorder (OCD), panic disorder, social phobia, generalized anxiety disorder, and specific phobias. He is also certified as an exposure and response prevention (EXRP) therapist and supervisor for OCD by Dr. Edna Foa. He received his Psy.D. in clinical psychology from the Graduate School of Applied and Professional Psychology at Rutgers, The State University of New Jersey. As a graduate student, Dr. Yusko was supported by a National Institute on Alcohol Abuse and Alcoholism training grant under the expert mentorship of Dr. Barbara McCrady, a national leader in the field of alcohol use disorders. Dr. Yusko completed his predoctoral internship training at Montefiore Medical Center, a part of Albert Einstein School of Medicine. Upon completing his doctoral studies, Dr. Yusko joined The Center for the Treatment and Study of Anxiety (CTSA) in the Perelman School of Medicine at the University of Pennsylvania. Dr. Yusko joined CTSA in order to coordinate a National Institute on Alcohol Abuse and Alcoholism funded clinical trial examining the sequential versus concurrent treatment of PTSD and alcohol dependence. Dr. Yusko is one of a handful of experts in the world on the concurrent treatment of PTSD and substance use disorders. Dr. Yusko is also a treating clinician for the National Football League for players that violate the league’s substances of abuse rules. He was trained in sports psychology by Dr. Charlie Maher, sports psychologist for the Cleveland Indians baseball organization, and continues to work with athletes of all levels. Dr. Yusko has presented on issues associated with OCD and PTSD at local and national professional organizations, he has appeared on television and been interviewed by multiple media outlets.  


Christina DiChiara, Psy.D.

Senior Psychologist

Dr. DiChiara is a licensed clinical psychologist and Senior Psychologist at the Center for Anxiety & Behavior Therapy.  Dr. DiChiara received her bachelor’s degree from Villanova University. She received a master’s degree in Counseling and Clinical Health Psychology, as well as her master’s and doctoral degrees in Clinical Psychology, from the Philadelphia College of Osteopathic Medicine. In addition to providing services at CABT, Dr. DiChiara also practices at the VA Medical Center in Philadelphia, where she is a psychologist on the PTSD Clinical Team, the Military Sexual Trauma Coordinator, and a supervisor of evidenced-based therapies. Dr. DiChiara joined the Philadelphia VA in November 2014, after serving as a clinical faculty member at the Center for the Treatment and Study of Anxiety (CTSA) in the Perelman School of Medicine at the University of Pennsylvania. She completed her postdoctoral fellowship at the CTSA, under the mentorship of Dr. Edna Foa. Dr. DiChiara specializes in evidence-based therapy for PTSD, including Prolonged Exposure Therapy (PE) and Cognitive Processing Therapy (CPT). She is a certified PE supervisor. Dr. DiChiara also specializes in cognitive-behavioral treatment for anxiety disorders, including Exposure and Response Prevention (EX/RP) for OCD, as well as evidence-based treatment for social anxiety, panic disorder, specific phobias, generalized anxiety, and depression.


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Jason Goodson, Ph.D.

Staff Psychologist

Dr. Goodson earned his PhD from Utah State University after completing a pre-doctoral internship at the Milwaukee VA Medical Center. He then completed a 2 year postdoctoral fellowship at Dartmouth Medical School in exposure-based treatment for anxiety disorders. After his fellowship, he began working with in the VA system where he treats veterans with PTSD, anxiety, and mood disorders and continues to work in this capacity. Dr. Goodson is a national consultant and trainer in prolonged exposure therapy for PTSD. He has published several scientific articles in the areas of PTSD and anxiety. He is interested in behaviors that perpetuate anxiety and PTSD and developed and published the Safety Behavior Assessment Form (SBAF). The SBAF has been used to predict response to treatment as well as the development of future anxiety. He regularly presents at local and national conferences and has been an invited reviewer for several scientific journals.


Leslie Keebler, LCSW

Clinical Intake Director

Leslie Keebler began her professional career as a Licensed Clinical Social Worker in 2008 after graduating from the School of Social Policy & Practice at the University of Pennsylvania.  From 2008 through 2016, Leslie practiced social work in the metro-Boston area, first as a therapist in Boston Public Schools and, later, as a clinical consultant. She has worked with children and teens struggling with emotional and behavior disabilities, women diagnosed with Post Traumatic Stress Disorder and Substance-Use Disorders and, for the past six years, has worked with patients and families suffering from Obsessive Compulsive Disorder and Anxiety-Related Disorders in both Residential and Partial settings. At CABT, she works closely with prospective patients and their families to help guide them through the entire admissions process and connect them with the most appropriate care. Leslie is also a registered yoga teacher and enjoys spending time outdoors with her dog, Louis.


Josephine Shih, Ph.D.

Staff Psychologist

Dr. Shih is a licensed clinical psychologist with over 20 years of specialized training and experience working with young adults and adults suffering from depression and anxiety disorders. Dr. Shih received her bachelor’s degree from the University of Pennsylvania and her doctorate in Clinical Psychology from the University of California, Los Angeles. She has had general psychotherapy training in a variety of clinical settings ranging from university counseling centers to the VA’s inpatient and outpatient clinics. Dr. Shih also has specialized training in evidence-based treatment approaches for anxiety disorders first through Dr. Michelle Craske’s anxiety-treatment research lab and at UCLA’s intensive partial hospitalization program for OCD and later at Dr. Edna Foa’s Center for the Treatment and Study of Anxiety at the University of Pennsylvania. Dr. Shih is trained in the scientist-practitioner tradition. As a professor of psychology at Saint Joseph’s University, she conducts research on stress, coping, and depression which informs her clinical work. She has more than 70 publications and conference presentations, some appearing in premier journals such as Journal of Consulting and Clinical Psychology and Journal of Abnormal Psychology.


Chandler Puhy, MS

Advanced Doctoral Student Therapist

Chandler Puhy is a fourth-year doctoral student in Clinical Psychology at Drexel University. She completed her Bachelor’s in psychology at Georgia State University where she completed an honors thesis in neuroscience focused on the brain's response to trauma. Chandler currently contributes to research on the development and evaluation of school-based intervention programs aimed at social and emotional skill building as well as research on trauma in individuals with autism. Chandler is interested in helping individuals across the lifespan with issues related to mood, anxiety, and trauma, through evidence-based cognitive behavioral therapy (CBT) and acceptance and commitment therapy (ACT) frameworks including the use of Exposure and Response Prevention (ERP) and Prolonged Exposure (PE).


Roshani Vanmali, MA

Advanced Doctoral Student Therapist

Roshani Vanmali is a fourth-year doctoral student in the Clinical Psychology program at La Salle University. She earned her Masters in Clinical Psychology from La Salle in 2018 and received a Bachelor's degree in Psychology and Human Development & Family Studies from the University of Connecticut in 2012. Prior to continuing her education, Roshani worked as a research assistant at academic health systems, such as Lifespan, affiliated with the Warren Alpert Medical School of Brown University, and University of Massachusetts Medical School. Her clinical training has been grounded in evidence-based treatment, such as Cognitive Behavioral Therapy. Roshani's clinical interests include treatment of mood and anxiety disorders in emerging adulthood.


940 Haverford Road
Suite 301
Bryn Mawr, PA 19010

(610) 455-5757