Dr. Mark Petter
I am a clinical psychologist registered with the College of Psychologists of Ontario. I received my Ph.D. in clinical Psychology from Dalhousie University in 2014. Since graduating I had been employed at Victoria Hospital with the Traumatic Workplace Program until entering private practice.
My practice focuses on providing assessment and treatment to adults with a variety of physical and psychological difficulties. I work from a cognitive-behavioural perspective and I have also received training in mindfulness-based treatments, including completing professional training with Dr. Jon Kabat-Zinn. I am particularly interested in helping individuals cope with stress, injury, illness, and pain. A goal of my practice is to provide my clients with the most scientifically supported treatments available.
Heather Hargraves , M.A., C.Psych.
Heather Hargraves has her M.A. in counselling Psychology from Western University and is registered with the College of Psychologists of Ontario as M.A., C. Psych.. Her Master thesis investigated how neurofeedback can help those struggling with various forms of trauma. Heather also holds a BAH. in Philosophy from the University of Windsor Ontario. Between her degrees Heather worked as a yoga instructor, and meditation teacher. Heather's strength lies in her understanding of the neurological basis of various mental health disorders and her ability to explain and educate how various forms of therapy, including mindfulness therapies, can be used to address specific needs. Heather is particularly interested in how neurofeedback and heart rate variability therapy can help a client move through various issues that have proven to be slow to respond to traditional talk therapies alone.
Dr. Nancy Davis
I am a clinical psychologist registered with the College of Psychologists of Ontario. I received my Ph.D. in clinical psychology from the University of Wisconsin-Madison in 2002 and completed my post-doctoral training at the University of Michigan in 2004. I moved to London in 2009 and I'm excited to be a part of Dr. Biederman's practice and to serve the mental health needs of the London Community.
My work with patients is grounded in the feminist principles of collaboration and respect for the individuals' own authority regarding their experience. My work includes acknowledging the interaction between the individual and the systems that the person is a part of, such as family, culture, and work environment, and how that interaction contributes to the person's lived experience. I value focusing on my patients' strengths and capacity for resilience, even though much of the work may involve engaging with areas of distress including depression, anxiety, and grief. I often work with people with chronic pain, sleep difficulties, and exposure to trauma. I have a particular interest in working with people who have or have had cancer, and their caregivers.
Dr. Dyana Castillo, C. Psych.(Supervised Practice)
Dr. Dyana Castillo is working under Dr. Tamara Biederman's supervision at our practice.
I am very interested and motivated in helping people lead the lives they are interested in. I am curious about everything that goes into making individuals who they are, and I use this curiosity to better understand the people with whom I work. My practice focuses on providing evidence-based assessment and intervention for adults. My clinical interventions are heavily influenced by psychodynamic and emotion-focused therapies because issues of emotion regulation and expression are highly common in mental health conditions, and they often develop earlier on in life. Ultimately, I let individuals’ needs guide the nature of the treatment, as well as the pace of our work together. Where relevant, I also incorporate my knowledge of social systems in society (e.g., family) and culture to better understand individuals with whom I work. I am grateful to be let into an individual’s world so that we can find a way to work towards a healthier quality of life.
Dr. Dyana Castillo offers services in English and Spanish.
Genny Bianchini, MSc. , PhD Candidate
Genny Bianchini, MSc. , PhD Candidate (supervised by Dr. Nancy Davis, C. Psych).
Genny is a practicum student completing her PhD in clinical psychology at Western University. In the past, she has worked with patients in both hospital and private practice settings: she is gaining more experience under Dr. Davis’ supervision. Genny has an interest in working with people to help them regulate their emotions in a way that promotes growth and resilience. She helps people learn to manage stress and conflict in their lives to improve overall well-being. Genny has experience with treating anxiety, depression, and chronic health conditions. She uses CBT and an eclectic approach She is available between 9am and 4pm on Wednesdays and between 1pm and 4pm on Fridays.
Valérie McLeod, M.A. Candidate
Valérie McLeod, M.A. Candidate (supervised by Heather Hargraves, M.A., C. Psych.)
I am an M.A. student in Clinical Psychology at Laurentian University, completing a placement under the supervision of Heather Hargraves, M.A., C. Psych. Originally from Sault Ste Marie, ON, I am a fully bilingual French-Canadian dedicated to supporting clients in both French and English. My goal as a clinician in training is to empower clients to pursue personal growth, gain deeper self-awareness, and discover a greater sense of purpose, all while guiding them toward a life that is fulfilling and aligned with their core values.
This approach integrates evidence-based practices, including Cognitive Behavioral Therapy (CBT), Dialectical Behavioral Therapy (DBT), and Mindfulness, to help individuals build resilience and improve overall mental health. I am passionate about enhancing psychological well-being through methods that foster meaningful social connections, promote a sense of autonomy, and equip individuals with the skills necessary to confidently overcome life’s challenges. In this process, I work closely with clients to develop their distress tolerance, enabling them to manage emotional intensity more effectively. By incorporating mindfulness practices, I also aim to foster greater presence and self-regulation in their daily lives.