Dr. Christal Castagnozzi, Psychologist

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Presenting Issues
Anxiety: Panic, Disorder, PTSD, GAD, OCD, Phobias
Depression, Bipolar Illness
ADHD
Parenting / Step Parenting
Childhood Abuse
Auto Accident MVA
Work Injury WSIB
Stress
Bereavement
Self Esteem
Assertiveness
Anger Management
Learning Disability
Relationship Issues
Separation / Divorce (Support for Adults)

SERVICES

Christal works with children, adolescents, and adults, offering both therapy and assessment services. She has experience in a variety of school board and community practice settings across the GTA, supporting individuals and families with diverse mental health needs.

APPROACH

Christal grounds her work in a person-centred, trauma-informed, and neurodivergent-affirming perspective. She values empathy, collaboration, and trust as the foundation of effective therapy. To meet the unique needs of each client, she integrates a variety of evidence-based therapeutic modalities, including:

• Cognitive Behavioural Therapy (CBT): Identifying and changing unhelpful thought patterns to support healthier behaviours and emotional well-being.
• Dialectical Behaviour Therapy (DBT): Building skills for emotion regulation, relationship effectiveness, and crisis management.
• Acceptance and Commitment Therapy (ACT): Fostering psychological flexibility by embracing what is outside of one’s control while committing to meaningful action.
• Emotionally Focused Therapy (EFT): Strengthening attachment and deepening relational bonds.
• Solution-Focused Brief Therapy (SFBT): Leveraging client strengths and resources to create practical solutions for present challenges.

Christal strives to provide a safe and supportive space where clients feel understood, valued, and empowered to create meaningful change.

PROFESSIONAL EXPERIENCE

Christal holds a Bachelor of Arts from York University and a Master of Psychology from Adler Graduate Professional School (2019). She is nearing completion of her Doctoral studies at the University of Toronto’s Ontario Institute for Studies in Education (OISE).

She is a registered Psychologist with the College of Psychologists and Behavioural Analysts of Ontario and the Nova Scotia Board of Examiners in Psychology.

Christal has extensive experience conducting assessments and providing therapy for individuals with a wide range of mental health difficulties, including anxiety, depression, self-regulation challenges, relationship issues, and life transitions. She has a particular interest in supporting individuals with high-masking and female-presenting Autism Spectrum Disorder (ASD), as well as ADHD, recognizing the unique ways these experiences can shape identity, coping, and wellbeing. Her professional work emphasizes evidence-based treatment approaches while tailoring interventions to each client’s unique needs and goals.

As a late-diagnosed neurodivergent practitioner, Christal brings lived experience and deep compassion to her work. She is dedicated to empowering clients as they navigate life pre- or post-diagnosis, fostering resilience, hope, and growth at every stage of the therapeutic process.

ABOUT

Christal is a devoted mother of three who finds joy in nature and travelling. She actively participates in peer study groups and invests in ongoing professional development. She is passionate about creating safe, affirming spaces where clients can feel supported as they work toward confidence, clarity, and growth.

RATES AND PAYMENT OPTIONS

Please contact our administrative staff for current Rates and Payment options.
They can be reached at 905 472-9658 Ext. 250 or email at admin@markhampsychologists.ca.

SCHEDULE AND AVAILABILITY

Please contact our administrative staff to confirm Dr. Christal Castagnozzi’s schedule and availability.

CONTACT

For more information or to arrange an appointment with Dr. Christal Castagnozzi, please call 905-472-9658 Ext 250 or email at admin@markhampsychologists.com and the Intake Coordinator will promptly respond to your request.

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