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Our Team/Therapists

Experienced and compassionate psychologists and social workers.

Crookes Counselling and Consulting Services have an experienced team of psychologists and social workers who are dedicated to providing effective, practical and constructive psychological intervention.

All of our Psychologists and Social Workers are fully registered and accredited.

All our Practitioners deal with Depression and Anxiety issues as well as specialising in many other areas of Mental Health.

Choosing a Psychologist or Social Worker.

What the difference is? Both Psychologists and Social Workers have university degrees and as part of their registration are required to attend ongoing professional development training. All our team of counsellors are highly qualified with many years of experience and specialise in many different areas.

We recommend you call our friendly reception staff, who are trained with the knowledge of counsellors specialities and will assist you in making a decision on which of our psychotherapists would best suit your needs.

Jill Crookes – Company Founder. Senior Psychologist. Resilience Coach


  • Bachelor of Science (Honours)
  • Graduate Certificate in Health Studies (Loss and Grief)
  • Member – Australian Psychological Society (APS)
  • Member – APS College of Counselling Psychologists
  • Psychologist Registration (AHPRA)
  • Endorsed - Counselling Psychology

Areas of Special Interest:

  • Trauma, loss and grief
  • Workplace stress, injury and illness
  • Resilience Coaching - personal and organisational
  • Nutritional Psychology
  • Personalised Integrative Therapy - providing mental health care using a multi-targeted, personalised, integrative approach.

Jill has over 42 years experience as a Registered Psychologist. She continues to enjoy helping people to meet the challenges they face and to develop skills for meaningful, lasting change.

Following a UK study tour in 2004, Jill also founded Wombat’s Wish, a community-based grief support program for children, adolescents and families where a parent or primary carer has died.

Jill uses a holistic approach to mental health care - understanding the psychological, lifestyle/environmental, dietary/nutrition, biological/medical and social support aspects of wellbeing.

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Anthony Stott - Principal Psychologist


  • Bachelor of Science (Biology)
  • Diploma of Education
  • Bachelor of Theology
  • Graduate Diploma of Computing
  • Master of Counselling Psychology
  • Member – Australian Psychological Society (APS)
  • Associate Member – APS College of Counselling Psychologists

Areas of Special Interest:

  • Registered with the ATAPS program
  • Pain management
  • Couples Counselling
  • Drug and alcohol
  • EMDR Therapy

Anthony has worked in a number of different fields such as teaching, youth work, and training unemployed people. He was a Lifeline counsellor for 5 years and has been in private practice since 2008.

Days available: Available for online counselling on Mondays. In office from Tuesday to Friday. After hours appointments on Thursday.

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Sarah Gale - Psychologist


  • General Psychologist Registration (AHPRA)
  • Associate Member of the Australian Psychological Society (APS)
  • Working with Children Check
  • AHPRA Psychology Internship
  • Bachelor of Behavioural Sciences (Honours)
  • Member - Australian Association for Cognitive and Behaviour Therapy

Areas of Special Interest

  • Relationship difficulties
  • Self-esteem issues
  • Bullying and workplace related stress
  • Psychiatric problems (mood disorders, anxiety, adjustment difficulties, psychosis, obsessive compulsive disorder)

Sarah embraces a solution focused approach towards assisting people to achieve psychological and emotional health. Not only has she developed considerable experience in private practice, but she has accrued extensive experience working within university, community and hospital based settings. As such, she offers expert services in the assessment and treatment of a range of psychological disorders and syndromes for adults and adolescents.

Sarah has also worked with individuals seeking to enhance their psychological wellbeing by helping them to discover ways to improve their self-esteem, manage overwhelming emotions, manage stress, communicate effectively, improve their relationship with significant others and also create a rich, full and meaningful life in accordance with their values.

In addition to her clinical work, Sarah is also passionate about advocating for her clients and has extensive experience preparing psychological assessment and court reports for Victims of Crime and WorkCover.
Sarah utilises a number of empirically-proven treatment approaches to guide her work including Cognitive Behavioural Therapy (CBT), Acceptance and Commitment Therapy (ACT), Mindfulness and Schema Therapy.
Sarah is a registered provider as a Psychologist with Medicare, TAC, WorkCover, Victims of Crime and most Private Health Insurers.

Days available: Friday


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Gregory Riddett - Accredited Mental Health Social Worker. Resilience Coach


  • Bachelor of Social Work (Honours, Sociology Major)
  • Member – Australian Association of Social Workers
  • Member – Australian Men’s Health Forum

Areas of Special Interest:

  • Family/Domestic Violence; (including Gay, Lesbian, Bisexual and Transgender) and civil/social
  • Adolescent Self-Harm
  • Pre court assessment and treatment of behavioural issues (includes appeals)
  • Court mandated behaviour change e.g.; criminal and child protection
  • Anger deconstruction and prevention
  • Biographical debriefing
  • Complex bio-psychosocial issues
  • Psychosomatic Illnesses
  • Chemical Sensitivity
  • Emotionally reactive behaviour 



For over three decades, Gregory Riddett has worked in both Health and Welfare and earned international recognition for his work in the field of understanding how Emotions dictate Choice and Behaviour. Gregory’s work in this area culminated in him being invited to London England in 2008 for the Launch of Dame Carol Black’s Review of the health of Britain’s working age population, “Working for a Healthier Tomorrow”. Gregory has a Bachelor of Social Work (Hons), is an Accredited Mental Health Social Worker, Clinical Health Sociologist, Medicare and EAP Provider.

 Gregory has studied conventional western and eastern approaches to understand human behaviour and behaviour change at the level of Arhatic Yogi. Gregory is an Accredited Stillness Meditation Therapy (SMT®) Teacher and Practitioner. Gregory is a socially conscious individual, social interpreter and mentor to those who wish to transform their lives by understanding the power of their emotions and their thoughts.

 Gregory regularly presents at health and mental health conferences in Australia and overseas. In addition he has lectured at university level on the Power of Emotions and Counselling. He has written several approaches and theories used in counselling and psychotherapy. The two most notable are Emotional Choice Theory© and Biographical Debriefing©. Gregory has both written and delivered anti-violence training to staff employed in both federal and state government health and welfare agencies. In addition Gregory has a strong interest in and extensive experience working with both victims and perpetrators of family violence.

 Days available: Monday - Thursday & Saturday. After hour appointments available.

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Betty Gurovski - Psychologist


  • Bachelor of Arts (Psych)
  • Post Graduate Diploma (Psychology)

Areas of Special Interest:

  • Couples counselling
  • Stress management
  • Trauma

Days available: Tuesday & Thursday

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Kimberley Muraca - Psychologist


  • Bachelor of Applied Science (Psychology)(Honours)
  • Master of Psychology (Counselling)

Areas of Special Interest:

  • Trauma
  • Drug and Alcohol
  • Anger Management

Days available: Tuesday afternoons.

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Marie-Claire McCubbery - Psychologist

Sees adolescents 12 years & up


  • Bachelor of Arts (Psychology / Spanish)
  • Post Graduate Diploma of Psychology
  • Masters of Counselling Psychology
  • Member - Australian Psychological Society (APS)
  • Working With Children Check

Areas of Special Interest:

  • Registered with the ATAPS program.
  • Relationship Difficulties
  • Anxiety and Depression
  • Trauma and Abuse
  • Work-related Bullying and Stress
  • Life Transition Difficulties
  • Parenting Issues
  • Adjustment Difficulties, Grief and Loss
  • EMDR Therapy


Marie-Claire McCubbery is a Counselling psychologist and works with adolescents, adults and couples to support and assist them in finding their way through a broad range of issues including anxiety related difficulties, depression, stress, relationship issues and life transition difficulties.

Using a person-centered approach, Marie-Claire works collaboratively with the individual needs of each client to increase their self-awareness and facilitate change in behaviour, entrenched thinking patterns and more deeply ingrained emotional difficulties. She draws from a range of therapy models including Cognitive Behavioural Therapy (CBT), Mindfulness, Commitment Therapy (ACT), Emotion Focus Therapy, Attachment Therapy and Schema Therapy.

In addition to being registered with Medicare Marie-Claire is a registered provider to TAC, Work Cover and Victims of Crime. She can also conduct counselling sessions in Spanish if requested.

Days available: Tuesday mornings, Wednesday & Friday. After hours appointments on Wednesday & Friday.

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Briony Owen - Psychologist



  • General Psychologist Registration (AHPRA)                           
  • Associate Member of the Australian Psychological Society (APS)
  • Member of the Society of Australian Sexologists (SAS)
  • AHPRA Psychology Internship
  • Senior First Aid Accredited - work place level 2                                       
  • Graduate Diploma in Professional Psychology
  • Graduate Diploma in Psychology
  • Graduate Diploma in Psychological Studies                                           
  • Bachelor of Applied Science, Human Movement/Psychology    
  • Working with Children Check      

Areas of Special Interest:

  • Sex Therapy - Children, Adults, Couples
  • Complex Trauma
  • Relationship & Marriage Counselling
  • Pre & Post Natal Issues
  • Eating Disorder Management
  • Stress & Anxiety Management
  • Grief Therapy - Children & Adults
  • ADHD Assessment & Management
  • Working with Children:
    • Aged 0-12
    • Behaviour Management
    • Emotion Regulation
    • Parenting


Briony is a registered Psychologist who is passionate about assisting people to achieve their maximum psychological health and emotional wellbeing. Briony is also a registered Sex Therapist, which with care, privacy and understanding, Briony can assist individuals and couples of all ages through sexual, marital and general relationship difficulties. Briony has also spent time at The Royal Children's Hospital and in special needs schools working with children to improve their behavioural and communication skills. Briony can assist families with behavioural and communication strategies for their children, whilst also counselling parents to be supportive, yet firm and encouraging responsibility and mastery in the child.

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Debi Hamilton - Psychologist


  • Bachelor of Arts (ANU)
  • Grad Dip Counselling (RMIT)
  • Member of Australian Psychological Society (APS)
  • Member of APS Counselling College

Areas of Special Interest:

 Areas of special interest include:

  • Registered with the ATAPS program.
  • anxiety - including panic attacks, phobias, social anxiety
  • trauma/abuse
  • sleep difficulties
  • WorkCover injury/rehabilitation
  • life transitions - post-natal depression, menopause, retirement
  • prostate cancer treatment



Debi Hamilton is a registered counselling psychologist with more than 20 years' experience in private practice. Her work is individually tailored, practical and thoughtful.  Debi has worked extensively with people suffering from trauma - including work-related and accident trauma - and abuse, particularly sexual abuse.  Her experience in these areas has helped her to develop a gentle but focussed approach, using a range of  therapeutic techniques in close consultation with the client.


Anxiety in all its manifestations is another area in which Debi has many years of experience.  She works with people experiencing a range of conditions, from phobias, social anxiety and obsessive-compulsive disorders through to trauma-related arousal.


Debi also has experience working with men (and their partners) following prostate cancer treatment.  She is able to assist with the grief and psychosexual adjustment that can often follow changes in erectile functioning.

Days available: Tuesday.

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Mariska van Vilsteren - Psychologist


  • General Psychologist Registration (AHPRA)
  • Working With Children Check
  • AHPRA Psychology Internship
  • Associate Member of the APS
  • Bachelor of Science (Psychology) - The Netherlands
  • Master of Science in Clinical and Developmental Psychology - The Netherlands

Areas of Special Interest:

  • Depression and anxiety
  • Trauma, including survivors of childhood abuse and neglect
  • Family and parenting issues
  • Child and adolescent mental health
  • Pre- and post-natal issues
  • EMDR Therapy


During her psychology studies in The Netherlands, Mariska was predominantly trained in cognitive behavioural therapy, but also embraces other frameworks such as psycho-dynamic counselling, schema therapy and acceptance and commitment therapy (ACT), based on the client's needs and presenting issues. Mariska finds it very important to work with a client-centred, trauma-informed and mindfulness based approach to increase personal and family wellbeing.

Before moving to Australia in 2010, Mariska worked in The Netherlands as a psychologist assessing children with language, hearing and/or developmental issues. After arriving in Melbourne, Mariska worked as a Family Counsellor with complex, isolated and disadvantaged families in a community organisation in the western suburbs. This is where she gained substantial experience in working with clients who have been faced with childhood abuse and neglect and related attachment issues.

Mariska is passionate about counselling children, young people, families and adults in a way that is supportive, family oriented, practical, and tailored to the client's needs.

Days available: Monday, Wednesday & Thursday.

Kathryn White (formerly Kathryn Lyall) - Psychologist


  • Master of Psychology (Health)
  • Bachelor of Behavioural Sciences (Honours)
  • Registration with the Psychology Board of Australia / AHPRA
  • AHPRA endorsement: Health Psychology
  • Member of the Australian Psychological Society (APS)
  • Member of the APS College of Health Psychologists

Areas of Special Interest

  • chronic disease self-management
  • chronic pain management
  • sleep difficulties
  • life stage transitions
  • working with older people.

Kathryn is a health psychologist working with adults and older adolescents. She has experience working in a variety of environments, including community health and crisis counselling. She works from a person-centred perspective, drawing largely on Cognitive Behavioural Therapy (CBT) and Acceptance and Commitment Therapy (ACT).

Days Available Wednesday, Thursday evenings and every 2nd Saturday.

Vicki Colosimo - Accredited Mental Health Social Worker


  •   Bachelor of Health Science
  •   Bachelor of Social Work 
  •   Diploma of Alcohol and other Drugs
  •   Specialist Course in Couple Therapy
  •   Certificate in Supervision 
  •   Leading, Managing and Supervising

      Vicki is a qualified Social Worker who has been supporting individuals and families for more than fifteen years. She has extensive experience working in the not-for-profit sector in several well-known organisations in Melbourne. As an independent counsellor, Vicki enjoys working with people from a holistic approach where the client’s needs are at the centre of her practice. As an experienced practitioner there are many areas that Vicki can assist with.

      Some areas of specialization include the following:

      • Relationship counselling (for individuals and couples)
      • Health and wellbeing
      • Stress management 
      • Enhancing performance in sport 
      • Clinical/External supervision for workers

       Days available: Monday & Wednesday afternoons/evenings & every 2nd Sunday.

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      Nicole Moulday - Forensic Psychologist


      • Bachelor of Arts (Psychology)
      • Honours (Psychology)
      • Doctor of Psychology (Forensic)
      • Australian Health Practitioners Regulation Authority (AHPRA) specialist endorsement as a Forensic Psychologist
      • Member - Australian Psychological Society (APS)
      • Member - APS College of Forensic Psychologists

      Nicole is a Forensic Psychologist with more than 18 years’ experience working with adults suffering from a range of mental health, substance abuse, emotional difficulties and other challenging thinking and behaviour. Nicole has dedicated her career to assisting those at the most difficult times of their lives and believes that every person has the right to be heard, understood and provided the opportunity for betterment. Nicole takes a person-centred approach, incorporating a range of therapeutic techniques that are offered in a non-judgemental, supportive environment.

      Some areas of specialisation include the following:

      • Forensic assessment and treatment (no court reports)
      • Offending behaviour
      • Anger management
      • Suicide and self-harm
      • Substance abuse, dependence, addiction
      • Trauma-related issues
      • Coping
      • Depression
      • Anxiety

      Days available: Thursday evening and 2nd Sunday

      Our philosophy... To assist clients to enhance their wellbeing,
      build life skills and fulfil their potential.