Our Team

Dr. Erica Martin, Ph.D., C.Psych.

Forensic and Clinical Psychologist

Dr. Erica Martin is a registered Clinical and Forensic Psychologist with the College of Psychologists of Ontario. She obtained her Bachelor of Science from the University of Toronto, and completed both her Masters and Doctorate degrees in Clinical Psychology at York University. Prior to her current role as a forensic and clinical psychologist in private practice, she was employed at Ontario Shores Centre for Mental Health Sciences as a forensic psychologist, conducting both assessment and therapy with individuals who have severe and persistent mental illness and who have been found Not Criminally Responsible (NCR). Additionally, Dr. Martin has worked and trained in a number of settings, including community agencies, general hospitals, student mental health centers and mental health facilities. She has completed numerous forensic psychological assessments for clients in both criminal and civil domains, and has provided expert testimony when necessary.


Dr. Martin has been involved in supervision of students at various levels of graduate training in psychology, and has provided in-service education for other disciplines, such as nursing. Dr. Martin has given talks at various community venues about topics such as the forensic mental health system, work-life balance, and mental health concerns in the workplace. She has also provided mental health training to officers within the Durham Region Police Service, and has conducted workshops about how to work compassionately with people who hear voices.

Dr. Martin has expertise in a variety of areas, including (but not limited to):

  • Forensic assessment and treatment

  • Diagnostic and personality assessment

  • Anxiety-disorders

  • PTSD and Occupational Stress Injury

  • Addictions

  • Personality disorders

  • Interpersonal difficulties/Social skills

  • Psychosis

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Tonya Upson, MSW, RSW

Registered Social Worker and Psychotherapist

Tonya Upson is a Psychotherapist and Registered Social Worker with the Ontario College of Social Workers and Social Service Workers. She obtained a Bachelor of Science Degree, in Honours Psychology, from Trent University in addition to a Master of Social Work Degree from Wilfred Laurier University. She also obtained a Human Services Counsellor Diploma from George Brown College. Ms. Upson has worked in a variety of settings, including inpatients and outpatients at Ontario Shores Centre for Mental Health Sciences, as well as community mental health agencies and private practice settings. She has also held a faculty position at Durham College, teaching courses in the Social Services Worker Program. 

Ms. Upson has expertise in a variety of areas, including (but not limited to):

  • Relationship difficulties

  • Family therapy

  • Marriage and couples counselling

  • Trauma and PTSD

  • Grief

  • Anxiety disorders

  • Mood disorders 

  • Substance abuse disorders

  • Forensic assessment and treatment

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Dr. Kelty Berardi, Ph.D., C.Psych.

Clinical Psychologist

Dr. Kelty Berardi is a registered Clinical Psychologist with the College of Psychologists of Ontario. She is licensed to work with children, adolescents, adults, and families. She completed her Doctorate in Clinical Psychology from the University of Windsor in 2008. In addition to her private practice work, Dr. Berardi works in the Eating Disorders Program at Lakeridge Health providing assessment and treatment to clients presenting with Eating Disorders across the lifespan. Dr. Berardi has provided consultation and in-service presentations to other treatment providers and helped develop and implement treatment programming for Eating Disorders. Additionally, Dr. Berardi has worked in a variety of clinical settings, including general and child hospitals, community centres, and mental health facilities. She has experience treating and assessing children, adolescents and adults presenting with a range of psychological difficulties and disorders. She also currently supervises students at various levels of training.

Dr. Berardi has expertise in a variety of areas, including (but not limited to):

  • Child and Adolescent development

  • Eating Disorders and Body Image

  • Anxiety Disorders

  • Mood Disorders

  • Diagnostic and personality assessment

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Danielle DaCosta, MSW, RSW

Registered Social Worker and Psychotherapist

Danielle DaCosta is a Social Worker registered with the Ontario College of Social Workers and Social Service Workers. She completed a Bachelor of Arts degree with honours at McGill University and a Master of Social Work degree at University of Toronto. She has worked at a mental health hospital in a variety of clinical settings including geriatrics, forensic mental health, neuropsychiatry, and psychological trauma. She has also worked with a community agency with clients experiencing mental health crises. Ms. DaCosta has experience using multiple evidence-based psychotherapeutic modalities including Cognitive Behavioural Therapy, Cognitive Processing Therapy, Dialectical Behavioural Therapy, and Mindfulness-based therapy.

Ms. DaCosta has expertise in a variety of areas, including (but not limited to):

  • Trauma and PTSD

  • Mood disorders

  • Anxiety disorders

  • Interpersonal difficulties

  • Forensic assessment and treatment

Lori McGrimmon, MPsy, Registered


Lori McGrimmon completed her Masters of Psychology degree from Adler Graduate Professional School. She is currently a Registered Psychotherapist, and plans to pursue registration as a Psychological Associate with the College of Psychologists of Ontario.  Ms. McGrimmon completed a Bachelor of Arts degree with honours from the University of Guelph with a major in psychology and a minor in child development.  In addition, Ms. McGrimmon has a Bachelor of Education degree from Brock University and has spent over 17 years teaching in an elementary school classroom.


Ms. McGrimmon works from a Cognitive Behavioural framework.  She also draws on the following evidence based approaches; Cognitive Processing Therapy (CPT) and Dialectical Behavioural Therapy (DBT) to support her client’s journeys.  Ms. McGrimmon uses a trauma informed perspective to better understand her client’s experiences and draws on the theory and strategies of mindfulness to help support them.  Ms. McGrimmon is currently building her understanding of the theory and strategies behind Acceptance and Commitment Therapy (ACT).  

Ms. McGrimmon has a particular interest in the following areas, including (but not limited to):


  • Anxiety disorders

  • Depression

  • Trauma

  • PTSD

  • Workplace stress

  • Life transitions

  • Relationship Challenges

  • Fertility

  • Diagnostic and personality assessment

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Laura Boyko, MSW, RSW

Registered Social Worker and Psychotherapist

Laura Boyko is a Social Worker registered with the Ontario College of Social Workers and Social Service Workers and Ontario Association of Social Work. She completed her Masters of Social Work at York University. She also holds undergraduate degrees in Social Work and Sociology. Ms. Boyko holds a Diploma in Human Services Counselling from George Brown College. She has worked in a variety of mental health settings including community mental health, hospital and postsecondary education. Ms. Boyko has worked with individuals and couples at many differing places of wellness including first episode to complex, chronic conditions. Laura provides a place to speak openly about what brings you to Core, offering a non-judgemental space using a variety of therapeutic modalities. 

Ms. Boyko  has expertise in a variety of areas, including (but not limited to):

  • Youth, adult, couples

  • Mood and anxiety disorders

  • Mindfulness/meditation

  • Career transitions and executive coaching

  • Interpersonal difficulties including relationships, parenting, life transitions, grief and loss

Erin Clark is a Registered Psychotherapist and Credentialed Music Therapist. She is in the process of completing her training in Rapid Resolution Therapy. She completed her undergraduate degree with Honours in Music Therapy at the University of Windsor in 2002 and became accredited through the Canadian Association of Music Therapists in 2007. Ms. Clark has been registered with the College of Registered Psychotherapists of Ontario since 2017.  Ms. Clark has worked with clients across the life span including children, seniors, adolescents and adults within various community and institutional settings. Ms. Clark has spent the past 12 years within an inpatient mental health facility serving clients across the spectrum including seniors, adolescents, individuals within the forensic system as well as individuals with neuropsychological disorders. As a Psychotherapist, Music Therapist and Musician, Ms. Clark brings music into the therapeutic process through collaborative or passive means. Things like listening to a song and talking about the lyrics, writing a song or banging on a drum can have a multitude of therapeutic benefits. Ms. Clark has facilitated many community and institutional workshops on mental health, self-care, stress management and navigating the healthcare system for loved ones. Ms. Clark is an approved Music Therapy Internship Supervisor and sessional faculty with Wilfrid Laurier University. Ms. Clark has also helped the CAMT develop resources for Music Therapy and mental health including being the team lead on the National Mental Health Task Force.   


 Ms. Clark has expertise in a variety of areas including but not limited to:

  • Mood Disorders

  • Anxiety Disorders

  • Interpersonal Difficulties

  • Acquired Brain Injuries

  • PTSD and trauma

  • Grief

  • Stress related to Caregiving

  • Musical Cognitive Behavioural Therapy

  • Mindfulness and Meditation


Erin Clark, RP, MTA 

Registered Psychotherapist, Credentialed Music Therapist, Music Therapist Accredited

Dr. Joe Enright, Ph.D., C. Psych.

Clinical Psychologist and Neuropsychologist

Dr. Joe Enright is a registered Clinical Psychologist and Neuropsychologist with the College of Psychologists of Ontario. He completed his doctoral degree at the University of Saskatchewan in 2016. He completed a one year predoctoral clinical neuropsychology residency, and two year post-doctoral clinical neuropsychology fellowship, at London Health Sciences Centre (Victoria and University Hospitals). He has worked in multiple settings during his career and training, including hospitals (general diagnostics, epilepsy monitoring unit, inpatient and outpatient psychiatry, neurology and neurosurgery), pain and rehabilitation clinic, child and youth services, older adult memory clinic, corrections, and university student services. He has been providing psychological assessment, neuropsychological assessment in private practice for several years and has extensive experience in medical-legal assessments and has appeared as expert witness in court proceedings. Dr. Enright has also authored and co-authored multiple research articles published in peer-reviewed journals, engaged in supervision of graduate level students, and has appeared as a guest presenter at conferences and as part of community education and outreach programs.


Dr. Enright works with adolescents, adults, and older adults. He also has experience working with individuals from various cultural backgrounds as well as from the LGBTQ+communities. Dr. Enright has experience and expertise in assessment and treatment in a variety of areas, including (but not limited to):


  • Depression and mood difficulties

  • Anxiety related difficulties

  • Pain and coping with medical conditions

  • Head/brain injury

  • Sleep difficulties

  • Cognitive difficulties

  • PTSD

  • Personality

  • Relationships

  • Parenting

  • Alzheimer’s and Dementia

  • Neurodevelopmental Disorders (Autism, ADHD, intellectual disability, learning disability, etc.)

Kerrie McFadden, M.A., C. Psych. Assoc.

School Psychologist 

Does your child struggle with the demands of school, with managing their emotions, with staying focused or remembering information? Witnessing your child struggle in any aspect of life can be very painful for a parent. It is hard to know what to do, or who to turn to for help. A psychological assessment is a great first step to getting the support your child needs. This type of assessment will highlight your child’s strengths and needs, help uncover causes of their difficulties, and help you to advocate for help. I truly believe that knowledge is power. It would be my pleasure to work with your child to help you better understand their cognitive, academic and social/emotional profile, and how to use that information to best support your child. As the late, great Bob Marley said, “Don’t worry about a thing, because every little thing is going to be alright”.


Kerrie-Lee McFadden completed a Bachelor of Arts degree with honours from the University of Guelph with a major in Psychology. She went on to obtain a Masters of Counselling Psychology degree from the Adler School of Professional Psychology in Chicago. Finally, she obtained a post-graduate certificate in School Based Psychological Assessment, where she fell in love with ‘putting the pieces of the puzzle together’ to help explain the learning challenges of children and adolescents.


Ms. McFadden has spent the last 15 years working for 2 local school boards completing comprehensive psychological assessments that evaluate the intellectual, academic, and mental health profile of children and adolescents. Ms. McFadden helps families navigate the school system, access supports within the community and provides strategies to implement at home and school. She works collaboratively with other health care providers in developing teaching and program strategies to meet the child’s needs; participates in school service programs and provides consultation to teachers, students, and parents/guardians. Ms. McFadden has served as a member of the Crisis Response Team within a school board setting, where during times of crisis will support administration, school staff, students, and families. Additionally, she aids in building the capacity of school board staff in the areas of learning, mental health and behaviour disorders via presentations, workshops, and conferences. 


Ms. McFadden has experience in several areas, including (but not limited to):


  • Working with children and adolescents aged 6 through 21

  • Anxiety disorders

  • Learning disabilities

  • Intellectual disabilities

  • Attention deficit hyperactivity disorders

  • Psychoeducation

  • Coping strategies and self-advocacy skills

Jessica Storring, MA Counselling Psych., RP

Registered Psychotherapist

Jessica Storring is a Registered Psychotherapist with the College of Registered Psychotherapists of Ontario. She obtained an Bachelor of Arts (Honours) in Psychology from York University and in addition to a Masters in Arts in Counselling Psychology from Yorkville University. She has undergone courses and training in Eye Movement Desensitization and Reprocessing (EMDR) therapy, as well as in suicide prevention and Attachment Focused Therapy. She has worked with diverse populations in private practice, conducting both assessments and therapy. Ms. Storring has experience using Cognitive Behavioural Therapy (CBT), Cognitive Processing Therapy and Eye Movement Desensitization and Reprocessing (EMDR) therapy in collaboration with Psychodynamic approaches.


Ms. Storring has expertise in a variety of areas, including (but not limited to):

  • Mood Disorders

  • Anxiety Disorders

  • Somatoform Disorders

  • Trauma and PTSD

  • Interpersonal difficulties

Shivaun Serioux

Office Administrator

Shivaun is our Office Administrator, and will likely be your first contact at CORE Therapy and Assessment Centre.

With over 10+ years of customer service experience from working with various employers, including TD Canada Trust and the Canada Revenue Agency, Shivaun made the decision to be a stay at home mother to her 3 children in 2011.  During that time, she attended Seneca College of Applied Arts and Technology part-time to obtain her Paralegal Diploma. 


She brings a positive presence and enthusiasm to the office as she greets and engages our new and returning clients.