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Dr. David Crowe


Dr. Tuvia Hoffman

About Our Psychologists

At Dr. David Crowe, our psychologists Dr. David Crowe and Dr. Tuvia Hoffman, offer psychological treatments and assessments in Ottawa. Our professionals are dedicated to treating each individual with a positive psychological approach. Learn more about our psychologists.

 Dr. David Crowe Dr. Tuvia Hoffman Heather Sansom, PhD

Dr. David Crowe

For as long as I can recall, I have had a keen interest in biography. In high school, I read all the biographies in the school library. Although I was registered in mathematics and virtually all my classmates chose university studies in engineering and science, humanities remained a strong interest for me. An undergraduate degree in economics presented a compromise of sorts.


While studying economics, I maintained an interest in better understanding the mind. I read popular literature of the time, including The Myth of Mental Illness by Thomas Szasz, The Divided Self by R. D. Laing, and The Human Person by Magda Arnold and John Gasson. These books and other readings in philosophy, such as Paul Ricoeur’s Freud and Philosophy, Herbert Spiegelberg’s Phenomenology in Psychology and Psychiatry, and Joseph Donceel’s Philosophical Anthropology, had an enormous impact on me.

I was particularly interested in comparative economic systems, as its focus of study included the dynamics of social, economic, and historical relationships in diverse cultures and societal circumstances. In fact, systems theory was quite popular in the early 1970s and was adapted to the mental health field by many theorists in social work and, later, in psychology and psychiatry. Its essential presupposition is that individuals cannot be fully understood without understanding the context in which they live their day-to-day lives. It was probably no surprise that after achieving an undergraduate education in economics, I would decide to pursue studies in psychology.


Having never studied psychology, I applied to the University of Ottawa as they offered a qualifying year of studies in psychology for those wanting to pursue graduate studies in the field. Their psychology program was richly grounded in both the sciences and the humanities and provided an intensive study in philosophical anthropology. The stated orientation of the graduate program in 1975, which was “Christian Personalism in a Pluralistic Context.” It struck me as a bold statement in a society that was becoming rapidly more relativistic. However, the focus on personalism was compelling, insofar as personalists believe that the human person should be the ontological and epistemological starting point of philosophical reflection.



BComm, Honours Economics, Loyola of Montreal, 1970

Thesis: A History of the Canadian Banking System


MPs, Clinical Psychology, University of Ottawa, 1975

Thesis: Self-Actualization and Influence of Therapist Values


PhD, Clinical Psychology, University of Ottawa, 1983

Thesis: Methylphenidate vs Parent Training in the Treatment of Hyperactive Children: A Two-Year Follow-Up Study

Professional Affiliations

College of Psychologists of Ontario: Registration no. 1748

Canadian Register of Health Service Psychologists: Registration no. 00306


Member of:

  • Ontario Psychological Association

  • Canadian Psychological Association

  • American Psychological Association

  • Ottawa Academy of Psychologists


Firestone, Philip; Crowe, David, et al. “Vicissitudes of Follow‐Up Studies: Differential Effects of Parent Training and Stimulant Medication with Hyperactives.” American Journal of Orthopsychiatry, 1986, Vol. 56(2), pp.184-194


Della Zazzera, Claude and David Crowe. Two Essays on the Philosophy of Mental Health: Reflections on the Hermeneutics of Psychopathology and Psychotherapy, Ottawa, Miamine Press, 2015

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University of Ottawa, Child Study Center (Internship)

  • Psychodiagnostic assessment
  • Individual therapy (adolescents) and play therapy (preschoolers)
  • Parent counselling
  • Family and marital therapy



Children’s Hospital of Eastern Ontario – Intern

  • Psychodiagnostic assessment
  • Psychoeducational assessment
  • Individual, family, and marital therapy



Ottawa Civic Hospital – Intern

  • Adult psychotherapy and psychodiagnostic assessment



Queensway Carleton Hospital – Psychometrist

  • In-patient and out-patient psychological assessment
  • Group and individual psychotherapy



  • Queensway Carleton Hospital – Psychologist



  • Queensway Carleton Hospital – Chief of Department



  • Queensway Carleton Hospital – Research Ethics Board Chair

Dr. Tuvia Hoffman

PhD CPsych (supervised practice), RP

Therapy is a meaningful journey, and I feel privileged to be a part of the process. Whether clients hope to resolve situational problems or aim to resolve deeply ingrained personality traits, I help the client make the journey worthwhile. Clients engaging in therapy with me can expect to feel valued. I listen to my clients’ successes and challenges and help clients capitalize on their strengths. I also treasure my clients’ background and culture. In therapy, I blend a humanistic approach with scientific-based practice to help my clients achieve their goals. In the first session, I will listen to your stories and use current research and assessment tools to help with diagnosis. Collaboratively, we will set treatment goals and a treatment plan. Whether you are coming to treat mood, stress, or personality or to learn how to deal with life’s difficult transitions, I will tailor the treatment plan to match your personality and goals.


My therapeutic method is an integrated humanistic/cognitive-behavioural therapy (CBT) model, but I also integrate acceptance and mindfulness-based approaches along with existential therapy. This integrative approach allows clients to explore life from several vantage points. CBT helps clients recognize faulty thinking, which may interfere with their goals in life. CBT is also helpful in creating a plan of action for better well-being. Acceptance and mindfulness-based approaches are useful in learning how to accept our experiences and circumstances, especially circumstances that cannot be changed. Humanistic and existential therapies allow for the exploration of essential themes as well as emotional expression. In therapy, I integrate these modalities to help increase the well-being of all my clients and to help them achieve what matters most in their lives. I have provided individual therapy, group therapy, and assessment for both inpatients and outpatients as a doctoral student at the Queensway Carleton Hospital and the Jewish General Hospital. Additionally, I provided assessment and therapy for Ottawa West Professional Services and the Centre for Interpersonal Relationships.

I am a member of the College of Psychologists of Ontario and the College of Registered Psychotherapists of Ontario. I am excited to be working again with Dr. David Crowe, who is my supervisor in my year of supervised practice.

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Heather Sansom, PhD
Registered Psychotherapist

Clients seek counselling feeling stuck or in distress, facing situations in which your normal coping strategies aren’t working as well. I see clients as a whole person: you have strengths, a story. You are more than the challenge you are going through. My role is to help you through your difficult time so you can thrive and find meaning, joy and purpose in life again. In the first session, you can expect to clarify the main reason you have come to therapy, share some of the stories that got you here, and work together to identify the treatment approach that fits you.


My approach to therapy draws on what we know about the connections between our physical self, thoughts, emotions, spirituality, and interpersonal patterns. I am trained in several classical talk-based psychotherapy methods, as well as creative and experiential options including art, recreation, nature, and animal-based (equine and dog) approaches that help you embody your life and balance your thinking in healthy ways. I support clients with depression, anxiety, work/academic/sports performance stress, life change, health crisis and other concerns. I have additional experience with body/food/wellness issues, and neurodiversity (higher functioning autism (Aspergers), ADHD). Virtual office video and telephone, and outdoor/walk-and-talk options are available (subject to public health restrictions).

I have a Master’s in Counselling Psychology, a PhD in positive psychology (resilience) through rural recreation, a graduate diploma in recreation therapy, a graduate diploma in spiritual care and psychotherapy, and training as a multi-faith hospital chaplain to support clients culturally and spiritually. I am also trained in Existential/Meaning Therapy, Narrative Therapy, Acceptance and Commitment Therapy (ACT), Cognitive Behavioural Therapy (CBT), Short-Term and Solution Focused Therapy, art therapy, Mindfulness-Based Stress Reduction (MBSR), and Emotionally Focused Therapy (EFT) for couples. I have other credentials for incorporating recreation, outdoor, and animal activity. My prior management career and years as a sport and life coach and recreation therapist inform my practice. My clinical experience has been at Royal Ottawa Mental Health Centre, Ottawa Hospital, Morneau Shepell, other EAP services, and in private practice.


I am a Registered Psychotherapist with the College of Registered Psychotherapists of Ontario (CRPO), and a nationally recognized counsellor through my membership with the Canadian Association of Spiritual Care (CASC).

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