Contact us today! Ajax: 905-427-2007 | Toronto: 416-305-5864

Welcome to the Centre for CBT in Ajax & Toronto.

 Your path to wellness starts here.

Proudly treating first responders

Multilingual services available

Our Clinic

The Centre for Cognitive Behaviour Therapy (CCBT) is a team of clinical psychologists committed to providing evidence-based, clinically proven therapeutic treatments.

Founded in 2005 by Dr. David Direnfeld, CCBT has helped thousands of patients address a diverse range of psychological conditions using the empirically validated methods of Cognitive Behaviour Therapy. We are a well-established private practice within the Durham and downtown Toronto medical communities as well as in the local insurance industry.

At CCBT, we strive to deliver the highest standard of professional, compassionate care, and we are proud to offer a safe, supportive space that welcomes patients of every background.

Contact us today to discuss your individual needs.

CBT Toronto

Our Team

David Direnfeld CBT Toronto

Dr. David Direnfeld, C.Psych.

Clinical director of the Centre for Cognitive Behaviour Therapy (CCBT), Dr. Direnfeld is a registered psychologist with over 25 years’ experience using Cognitive Behaviour Therapy for the treatment of depression and anxiety disorders. He founded CCBT in 2005 because he felt passionately that everyone in our community who struggles with a psychological condition should have access to the highest quality care available.

Dr. Direnfeld holds a Ph.D. in clinical psychology and has been researching and treating psychiatric disorders since 1992 in a range of clinical settings, including general and psychiatric hospitals, university-based psychiatric research units, and private clinics. He has also provided aftercare for guests on the Dr. Phil Show, Hoarders and Newlywed Nearly Dead.

Dr. Direnfeld received undergraduate training in general psychology at York University and began his clinical training at the Anxiety Disorders Clinic at the Centre for Addiction and Mental Health (formerly the Clarke Institute of Psychiatry). He earned his doctorate in clinical psychology at the State University of New York (SUNY) at Buffalo, and completed his residency training at the University of British Columbia, in the Anxiety Disorders Unit and Health Psychology Clinic at UBC Hospital. He later held a staff psychologist position at the Anxiety Disorders Unit at McMaster University Medical Centre, as well as a faculty position in McMaster’s Department of Psychiatry and Behavioural Neurosciences. His research activities have focused on the assessment and treatment of mood and anxiety disorders, and he has published dozens of peer-reviewed articles in these areas, as well as presented his findings at international conferences.

Dr. Lynne Lamarche, C.Psych.

Dr. Lamarche is a registered clinical psychologist with more than 10 years’ experience using Cognitive Behaviour Therapy for the treatment of psychological disorders. She holds a Ph.D. in clinical psychology and has been researching and treating psychological disorders since 2003 in a range of clinical settings, including general and psychiatric hospitals, community clinics, detention centers and private clinics.

Dr. Lamarche received undergraduate training in general psychology at Queen’s University, earned her doctorate in clinical psychology at the University of Ottawa, and completed her residency training at the Royal Ottawa Hospital, and at the Centre for Psychological Services in Ottawa.. Her research activities have focused on sleep problems, specifically among individuals with posttraumatic stress disorder, and among women with severe premenstrual symptoms.

Dr. Lamarche offers services in English and French.

Lynne Lamarche
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Dr. Denise Ma, C. Psych (Supervised Practice)

Dr. Ma is a clinical psychologist in supervised practice with diverse experiences working with individuals across the lifespan. She utilizes evidence-based approaches, including Cognitive Behaviour Therapy and Dialectical Behaviour Therapy, to treat a wide range of psychological disorders. She has worked previously in general and psychiatric hospital settings, university counseling centres, and community clinics.

Dr. Ma received her undergraduate training in psychology and philosophy at McGill University. She also completed her Master’s degree in psychiatry at McGill University. Dr. Ma received her doctorate in clinical psychology from Concordia University, and completed her residency training at Ontario Shores Centre for Mental Health Sciences. Her research interests have focused on the developmental psychobiology of anxiety symptoms in children and adolescents.

Dr. Skevoulla Xinaris, C.Psych.

Dr. Xinaris is a Clinical and Counselling Psychologist with over 25 years’ experience providing psychological assessment and treatment services. She completed her Ph.D. in Clinical Psychology at Queen’s University at Kingston.  Dr. Xinaris’ experience includes the provision of psychological services to children, youth and adults for a variety of presenting mental health issues including anxiety and mood disorders, adjustment disorders, trauma and stressor-related disorders, substance-related and addictive disorders, eating disorders, relationship, work and family stress, difficulties with academic and/or social functioning, and somatic concerns. Dr. Xinaris uses evidence based therapeutic approaches including Cognitive Behavioural Therapy, Dialectical Behaviour Therapy, Prolonged Exposure Therapy and Mindfulness.

Dr. Xinaris worked as a staff psychologist at Lakeridge Health Oshawa for many years, where she also went on to fulfill the role of psychologist/client care manager of the specialized Eating Disorders Program for youth and adults serving Durham Region which she founded, set up and led for 14 years. She has more recently served as psychologist with the Canadian Armed Forces, fulfilling duties as a member of the health care team serving military members. Dr. Xinaris has published research and given talks and presentations in the areas of eating disorders, sex roles and child development. She has also presented her findings on depression, anxiety, parenting styles, child development and clinical outcomes.

Skevoulla photo

Dr. Sabrina Hassan, C.Psych.(Supervised Practice)

Dr. Hassan is a clinical and counselling psychologist in supervised practice, registered with the College of Psychologists of Ontario.  She received her M.A. and Ph.D. in clinical psychology from York University, and completed a specialist program in psychology as part of her undergraduate training at the University of Toronto.  She completed her pre-doctoral residency training at the Centre for Addiction and Mental Health in Toronto. Dr. Hassan has worked in mental healthcare for 17 years including various community, hospital, educational, academic/research, and private practice settings, in addition to having 10 years of experience in the supervised practice of psychology.

Dr. Hassan works with adults and her clinical experience includes assessment and treatment of a variety of difficulties, including anxiety disorders, mood disorders, emotion dysregulation, behavioural impulsivity, complex trauma and trauma-related difficulties, and psychotic illness. She practices within an integrative cognitive-behavioural framework grounded in client-centered, feminist, and trauma-informed values.  Dr. Hassan is experienced in a range of evidence-based treatments, including cognitive-behavioural therapy, dialectical behaviour therapy, motivational interviewing, mindfulness, compassion-focused therapy, and attachment-based relational psychotherapy for trauma, which are integrated as needed to best meet her clients’ goals and accommodate their preferences.  Dr. Hassan has worked successfully with persons from diverse backgrounds and identities, and brings a culturally sensitive lens to her work.

Marina Mazer, Registered Psychotherapist

Ms. Mazer is a Registered Psychotherapist with over 18 years of experience, both in and out of Canada.  She holds a post-graduate degree in Behavior Analysis and a Bachelor’s degree in Clinical Psychology. She is currently enrolled in a Master of Psychology Program at Adler School of Professional Psychology (expected to graduate in 2019).

Ms. Mazer has worked in mental healthcare in various settings and is experienced in a range of evidence-based treatments, including Cognitive-Behavioral Therapy, Dialectical Behavior Therapy and Acceptance and Commitment Therapy. Herexperience practising across cultures has enabled her to develop a better understanding of complex and challenging contexts that individuals, couples and families experience throughout life.

Ms. Mazer is a Professional Member of the Ontario Association of Consultants, Counselors, Psychometrics and Psychotherapists (OACPP) and a Registered Psychotherapist (RP) with the College of Registered Psychotherapists of Ontario (CRPO).

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