Our Mental Health Professionals

Katherine Marr, MA, CCC, RP

Registered Psychotherapist

Katherine believes that human beings are beautifully complex and perfectly imperfect. In her work, she strives to help people reduce their sense of overwhelm, increase their sense of belonging, find freedom from suffering, improve their relationships with themselves and others, and enhance their overall quality of life.

Katherine has been working in the mental health and social services field for over twenty years, primarily within the child, youth, and family services sector. She began her career as a child and youth care worker and program coordinator in schools, community agencies, youth mental health treatment centers, and detox and addiction recovery programs. Since 2011, she has been practicing counseling and psychotherapy in Ottawa, expanding her work to include adults of all ages, managing mental health services, and providing clinical supervision to other therapists.

Katherine holds a master’s degree in counseling psychology from the Adler School of Professional Psychology in Vancouver, B.C. She is a Registered Psychotherapist (RP) with the College of Registered Psychotherapists of Ontario (CRPO) and a Canadian Certified Counsellor (CCC) with the Canadian Counselling and Psychotherapy Association (CCPA). Additionally, Katherine is a Certified Yoga Therapist with the International Association of Yoga Therapists (IAYT), a mindfulness and meditation teacher, and is nearing completion of her practitioner training in Somatic Experiencing with Somatic Experiencing International.

In her work with children, youth, and their families, Katherine relies on her foundational training in Adlerian psychology and incorporates various approaches, including Emotion-Focused Family Therapy, Family Systems Theory, Collaborative Problem Solving/Collaborative & Proactive Solutions (CPS), Nonviolent Communication (NVC), Positive Discipline, and Positive Youth Development. Most recently, she completed her training as a Forest and Nature School Practitioner with the Child and Nature Alliance of Canada. When working specifically with children, Katherine integrates nature, movement, and art forms into a playful and engaging therapy process.

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Marwan Abou Diwan, MSW, RSW, Psychotherapist

Clinical Manager, Centre of Couples and Relationships.

Marwan A. Diwan is an internationally educated social worker who holds a Master’s degree in Social Work and Educational Counselling, as well as a Bachelor’s degree in Religious Sciences. He also has a Master’s degree in Living Languages/Translation and offers counseling services in English, French, Arabic, and Spanish. Additionally, he provides clinical consultation and supervision to other clinicians in the community.

Marwan is experienced in working with adult individuals and groups dealing with a wide range of emotional and psychological issues. His areas of specialty and interest include interpersonal relationships, depression, anxiety, self-esteem issues, trauma/PTSD, grief and loss, chronic mental health and Refugee and Vulnerable Newcomers, LGBTQ+, People living with HIV and identity-related issues.

Marwan is trained with a range of therapeutic models including, Humanistic approach, Narrative Therapy, EMDR, Hypnosis, Drama Therapy, etc. In collaboration with the individuals, he works with, Marwan tailors a personal care plan to assist individuals in returning to a place of health, ease, balance and comfort. Marwan work is person-centred and strength-based and respects everyone for who they are and who they want to become. Marwan’s working philosophy is that the individual’s inner and external resources are the main drives for their recovery and will help them in achieving meaningful change in their life.

In his home country, Lebanon, Marwan has combined his clinical counselling work with other professional activities with the Danish law enforcement agencies in the fields of anti-radicalization, communication, leadership, and other soft skills areas.

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Quinn Rivier Gatt, MSW, RSW

Registered Social Worker

Quinn has worked at Jewish Family Services (JFS) since 2016 starting as a summer student. She has had the advantage of working in many departments learning various positions to better support people within the agency.  She has experience working with seniors with cognitive impairments, vulnerable populations such as low-income Jewish individuals, children, students of all ages, adults, racialized individuals, persons with disabilities and LGBTQ2S+ community members and is passionate about working with these populations again.

Quinn is a very empathetic and energetic person who can connect with others easily. She is a great listener and observer and values diversity, believing she can learn as much from others, as they can from her. Quinn believes a therapeutic and working relationship should be collaborative, understanding, and supportive of one another.

Quinn prioritizes creating a space that is shared, free of judgment, warm, compassionate, and encouraging, where all individuals feel safe and comfortable, with an understanding that each therapeutic relationship will be different and not everything works for everyone.

Quinn works from a strength based, solution focused perspective, utilising techniques from narrative therapy, emotional-focused therapy, trauma informed therapy, and mindfulness. She believes the mind, heart, body, and spirit are all connected and must be respected during the therapeutic process. Quinn also believes societal pressures and systemic issues impact all individuals and must be taken into account when discussing personal journeys.

Quinn holds both a bachelor and a Master of Social Work, as well as bachelor’s degree in sociology and psychology. She is a registered social worker with the Ontario College of Social Workers and Social Service Workers, and a member of the Canadian and Ontario Association of Social Workers. She has been working in various non-profit agencies for more than 6 years.

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Svetlana Kozevnik, MSW, RSW

Registered Social Worker

Svetlana has over 15 years of experience as a social worker in various departments within hospital settings in Israel and in Canada, where she has provided support to families, youth at risk, and individuals experiencing intimate partner violence (IPV).

Her goal is to create a warm, safe, and non-judgmental space, fostering self-awareness as a therapist. She offers a supportive environment where clients can share their stories and feelings openly and has experience in helping clients navigate community services suited to their needs.

Trilingual in Russian, English, and Hebrew, Svetlana bridges language gaps effectively. She holds both a Bachelor’s and a Master’s degree in Social Work from Bar-Ilan University and is a registered social worker with the Ontario College of Social Workers and Social Service Workers, as well as a member of the Ontario Association of Social Workers.

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