Our Team – Psychologists & Therapists

Dr. Marla McGregor, Co-director

Clinical and Rehabilitation Psychologist

Dr. Marla McGregor, C.Psych

Dr. Marla McGregor is a registered Psychologist who received her Ph.D. from the University of Toronto (OISE/UT). She currently works in private practice providing both assessment and treatment services in the areas of counselling, clinical and rehabilitation psychology.  Dr. McGregor has a broad base of training and experience working with mood and anxiety disorders, relationship difficulties, self-esteem, anger and stress management. She also has extensive experience assessing and treating individuals who have been involved in motor vehicle accidents and are struggling with issues such as chronic pain, phobias, post-traumatic stress disorder, depression and other interpersonal problems. She also works with individuals who are on short or long disability from their place of employment, working with insurance companies and human resources to help facilitate a successful and sustainable return to work.

Read Clinical and Rehabilitation Psychologist Dr. Marla McGregor‘s full bio and services.

Dr. Marla McGregor works at both the Oakville Location and the Hamilton Location

Dr. Maria Antoniou, Co-director

Clinical and Counselling Psychologist

Dr. Maria Antoniou, C.Psych

Dr. Maria Antoniou is a registered Clinical Psychologist working in private practice providing both assessment and treatment services in the areas of counselling and clinical psychology. Dr. Antoniou has a breadth of experience providing assessment and treatment for children, adolescents, adults and families. Dr. Antoniou has a special interest in the treatment of individuals with eating disorders.

Read Clinical and Counselling Psychologist Dr. Maria Antoniou‘s full bio and services.

Dr. Maria Antoniou works at both the Oakville Location and the Hamilton Location

Kyla Baird

Clinical Therapist

Kyla Baird, M.A., Ph.D. Candidate

Kyla Baird, M.A., is a Ph.D Candidate who works with children, adolescents and families and has a breadth of experience in comprehensive psychological assessments, individual, group and family-based therapies.

She has interests and experience in working with children and youth with anxiety disorders and mood disorders, Autism Spectrum Disorder, self-esteem difficulties, Eating Disorders and behaviour problems. Kyla incorporates elements of interpersonal therapy, Cognitive Behaviour Therapy and Dialectical Behaviour Therapy in treatment. She has a special interest in the treatment of eating disorders and uses Family-Based Therapy as the primary intervention.

Read Clinical Therapist Kyla Baird‘s full bio and services.

Kyla Baird works at the Oakville Location.

Souha Bawab

Clinical Therapist

Souha Bawab, M.A.

Souha Bawab has a master’s degree in psychology and over 8 years of experience providing therapy.

Souha has extensive training in short-term psychodynamic therapy and also heavily relies on behavioural, cognitive-behavioural, interpersonal, and experiential interventions in her work. Souha is passionate about helping people with mood and anxiety symptoms, relationship issues, problems resulting from loss or traumatic experiences, addictions, and self-defeating behaviours.

Souha believes that the engine to every therapy is the client’s goals. Using a warm and collaborative approach, Souha works with her clients to help them uncover what is getting in the way of achieving their goals.

Souha has worked in a hospital setting for general mental health, and residential and outpatient settings treating mental health and addictions via individual and group psychotherapy. Souha has co-authored several publications in scientific journals and taught a course at the university level.

Clinical Therapist Souha Bawab works at the Oakville Location.

Mary Cook

Therapist

Mary Cook, B.Sc., M.Ed.

Mary Cook received her Master’s Degree in Counselling Psychology from the University of Toronto. Mary offers strategies from both the Emotion Focused Therapy (EFT) and Cognitive Behavioural Therapy (CBT) models with a goal to helping her clients achieve their goals and regain a sense of well-being and balance in their lives.  She enjoys working with all ages, helping children, adolescents and adults develop effective strategies to manage a variety of difficulties, including mood and anxiety disorders, relationship and work stress, general stress management, self-esteem issues as well as grief and loss. In addition to individual counselling, Mary also has extensive training and experience with Couples Therapy.

Read Therapist Mary Cook‘s full bio and services.

Mary Cook works out of the Oakville Location

Dr. Ilana Davine

Clinical & Counselling Psychologist

Dr. Ilana Davine, C.Psych.

Dr. Ilana Davine is a psychologist who completed her Doctor of Psychology (Psy.D) at the Adler University in Chicago, Illinois. At The Therapy Centre, she provides assessment and treatment services to both adolescents and adults.  Dr. Davine’s clinical experiences and interests involve treating individuals presenting with a variety of concerns, including mood and anxiety disorders, issues with self-esteem, self-harm behaviours, as well as LGBTQ+ mental health and issues related to sexual and gender identity. Dr. Davine completed her doctoral dissertation in the area of addictions and has specialized training in treating individuals with substance use disorders.

Read Psychologist Dr. Ilana Davine‘s full bio and services.

Dr. Ilana Davine works at both the Oakville Location and the Hamilton Location

Dr. Jenn Deffendall

Clinical and Rehabilitation Psychologist

Dr. Jenn Deffendall, C.Psych

Dr. Jenn Deffendall is a registered Psychologist who received her Ph.D. from the University of Central Florida.  She currently works in private practice providing comprehensive assessment and treatment services in the areas of clinical and rehabilitation psychology.  Dr. Deffendall has extensive training and experience working with a range of problems including depression, anxiety, post-traumatic stress, health-related issues including chronic pain, and addictions (alcohol, tobacco, cannabis, and other substances). She primarily works within a Cognitive Behavioural Therapy (CBT) framework, with the ability to integrate elements of specialized treatments (such as Dialectical Behaviour Therapy/DBT, Motivational Interviewing/MI) as needed to ensure treatment is effective.

Read Psychologist Dr. Jenn Deffendall‘s full bio and services.

Dr. Jenn Deffendall works out of the Oakville Location

Laura Demoe

Registered Social Worker

Laura Demoe, MSW, RSW, CSAT

Laura Demoe is a Registered Social Worker who received her Master degree from Wilfrid Laurier University (WLU)and is part of the Ontario Association of Social Workers (OASW).  She currently works in private practice providing couple and individual therapy services. Laura Demoe has completed extensive training in couple therapy, specifically Emotion-Focused Therapy model. Laura has completed additional Emotion Focused Therapy (EFT) training specific to treating couples who have experienced an affair or betrayal (Attachment Injury Repair Model). She completed her Master thesis in couple’s therapy and what prevents couples from seeking help earlier. Laura also has a passion for working with individuals, specifically around relationship issues & trauma. Laura has completed additional training in trauma therapy technique Eye-Movement Desensitization (EMDR), utilized to treat PTSD. She also has extensive training in treatment of sexual addiction (Certified Sex Addiction Therapist), she works primarily with partner’s and couples struggling with this issue.

Read Laura Demoe‘s Registered Social Worker full bio & Services.

Laura Demoe works at the Oakville Location

Dr. Mary Lees

Clinical Psychologist

Dr. Mary Lees, C.Psych

Dr. Mary Lees is a registered Clinical Psychologist who received her Ph.D. from the University of Western Ontario. She completed her early training in London, Ontario at University Hospital, London Psychiatric Hospital, Victoria Hospital, St. Joseph’s Hospital and Children’s Psychiatric Research Institute

From 1994-2015, Dr. Lees was a staff psychologist at Credit Valley Hospital, Mississauga, where she worked in Inpatient and Outpatient Mental Health, Maternal/Child Care, Child and Adolescent Services, the Anxiety Disorders Program, and the Eating Disorders Program. She has particular expertise in the area of anxiety disorders and eating disorders and worked in Credit Valley Hospital’s adult outpatient and intensive, Inpatient and Day Hospital Eating Disorders Programs from 2001-2015. Dr. Lees has extensive experience with Cognitive Behavioural Therapy (CBT), but has also had training in other therapeutic models, including Dialectical Behaviour Therapy. She also offers services in the areas of stress management, work adjustment, mood disorders, relationship issues and behavioural issues.

Read Clinical Psychologist Dr. Mary Lees‘ full bio and services.

Dr. Mary Lees works at the Oakville Location.

Dr. Frida Marshi Nasser

Clinical and Rehabilitation Psychologist (Supervised Practice)

Dr. Frida Marshi Nasser, C.Psych

Dr. Frida Marshi Nasser is a psychologist who completed her first Master of Science degree with a major in Applied Educational Psychology and a concentration in School Counseling (M.A.) at Bouve’ College of Health Sciences, Northeastern University in Boston, Massachusetts, USA. She completed her second Master of Arts in Social Science (M.A.) in Clinical and Educational Psychology and her Doctorate (Ph.D.) at the Faculty of Social Sciences, Department of Psychology, University of Haifa, Israel.

She is registered with the College of Psychologists of Ontario and currently completing her supervised practice in the areas of Clinical and Rehabilitation Psychology.

Dr. Marshi Nasser works within a Psychodynamic Psychotherapy approach, and incorporates Developmental Psychotherapy, Play Psychotherapy, Dyadic Psychotherapy, and Cognitive Behaviour Therapy (CBT) in treatment. She also provides therapeutic work with parents as well as counseling and guidance.

Dr. Marshi Nasser has interest and a wide range of experience working with children, adolescents and adults with a wide variety of problems such as anxiety disorders, mood disorders, personality disorders, adjustment disorders, developmental disorders, chronic stress, self esteem difficulties, behaviour problems, interpersonal and relational issues, school and learning issues, parenting, and many other issues.

Read Clinical & Rehabiliation Psychologist (Supervised Practice) Dr. Frida Marshi Nasser‘s full bio and services.

Dr. Frida Marshi Nasser works at the Oakville Location.

Katarina O'Donnell

Psychologist

Katarina O’Donnell, M.C., C.Psych

Katarina O’Donnell is a registered Psychologist with the College of Psychologists of Ontario and a member of the Ontario Psychological Association. She currently works in private practice providing treatment services to adults. Katarina’s professional background includes a Master’s Degree in Counselling Psychology. In the past, Katarina has worked with young adults in a university counselling centre and adults of various ages in family physician clinics. Katarina works within a framework that incorporates Cognitive Behavioural Therapy (CBT) and Solution-Focused Therapy (SFT). Katarina has worked with adults to resolve concerns including depression, anxiety, stress management, relationship issues, emotional regulation, and life transitions.

Read Psychologist Katarina O’Donnell‘s full bio and services.

Katarina O’Donnell works out of the Oakville Location

Dr. Susan Sprokay

Clinical Therapist

Dr. Susan Sprokay, Psy.D

Dr. Susan Sprokay is a clinical therapist who completed her Doctor of Psychology (Psy.D) at Pepperdine University in Los Angeles, California. At The Therapy Centre, she provides assessment and treatment services to adults in the context of a genuine and compassionate therapist-client relationship.

Dr. Sprokay’s clinical experiences and interests involve treating individuals presenting with a variety of concerns, including mood and anxiety disorders, adjusting to life changes, coping with grief and loss, and helping her clients increase their understanding of the way they engage with the world and with themselves. Dr. Sprokay draws on her training in contemporary psychoanalytic psychotherapy techniques, incorporating humanistic and cognitive-behavioural techniques to best support positive changes in her clients’ lives.

Read Clinical Therapist Dr. Susan Sprokay‘s full bio and services.

Dr. Susan Sprokay works out of the Oakville Location

Jackie Tapper-Atkinson

Therapist

Jackie Tapper-Atkinson, M.S.S., R.S.W.

Jackie Tapper-Atkinson has been in private practice in Oakville since 2006. She has over 15 years of experience in providing individual, family and group therapy for teens and adults, with extensive experience in treating depression, anxiety and relationship issues. She also has specialized training in treating body image and eating disorders. Jackie has particular interest in the application of Cognitive Behavioural Therapy (CBT) and Emotion Focused Therapy (EFT) to the treatment of eating disorders, and a range of anxiety and mood disorders. As well, she has been working on the integration of the Family-Based approach and EFT to the treatment of adolescents with eating disorders.

Read Therapist Jackie Tapper-Atkinson‘s full bio and services.

Jackie Tapper-Atkinson works out of the Oakville Location


Dr. Karina Zorzella (Supervised Practice)

Clinical and School Psychologist (Supervised Practice)

Dr. Karina Zorzella, C.Psych. (Supervised Practice)

Dr. Karina Zorzella is a psychologist providing assessment and treatment for children, adolescents, adults, and families experiencing distress related to trauma, child-parent attachment difficulties, anxiety, depression, low self-esteem, emotion regulation, behavioural problems, and relationship difficulties. She has a special interest in working with individuals dealing with trauma and preschool-aged children experiencing behavioural and emotional difficulties and their parents. Dr. Zorzella strives to create an environment of safety and trust where clients can express themselves, feel understood, and explore feelings and thoughts about what is causing them concern. Dr. Zorzella’s therapy approach is integrative and builds upon a collaborative therapeutic relationship. She integrates various therapy modalities (psychodynamic, play-based, family systems, and cognitive behavioural) to tailor treatment to clients’ unique needs, goals and preferences.

Dr. Zorzella holds a Ph.D. in Clinical-Developmental Psychology from York University where she studied the role of attachment, therapeutic alliance, and emotions in the context of trauma therapy with children and adults. Dr. Zorzella has extensive experience working in a variety of hospital, community mental health, school, and private settings. Dr. Zorzella trained at the Sick Kids Centre for Community Mental Health (formerly The Hincks-Dellcrest Centre) where she specialized, among other areas, in the assessment and treatment of infants and preschool-aged children, as well as families dealing with developmental trauma. Dr. Zorzella also provided assessment and treatment for children, adolescents, and adults seeking support for a wide range of concerns at CAMH, Women’s College Hospital, ROCK, and Peel Children’s Centre. Prior to joining The Therapy Centre, Dr. Zorzella held positions at the Peel District School Board and The Willow Centre.

Dr. Zorzella is a member of the College of Psychologists of Ontario and the Ontario Psychological Association.

Dr. Karina Zorzella works at the Oakville Location and the Hamilton Location.