Dr Isabelle Mercer

Dr Isabelle Mercer is a Clinical Psychologist at Schoen Clinic Chelsea who provides specialist therapy for a full range of mental health challenges. She works with children, teenagers and adults, supporting individuals with both common and complex emotional difficulties.

While she is experienced across the entire spectrum of mental health needs, Dr Mercer has particular expertise in anxiety, trauma, depression, relational issues, chronic pain and self-esteem-related concerns.

Central to Dr Mercer’s approach is the creation of a therapeutic space that feels safe, respectful and gently challenging. She works with people who may feel stuck in repeating emotional or behavioural patterns, such as perfectionism, people-pleasing, emotional avoidance or chronic overthinking, and helps them understand the roots of these difficulties.

Her work empowers individuals to develop deeper emotional insight, build resilience, and move towards meaningful, sustainable change.

With a background spanning NHS and private services, Dr Mercer has supported patients from diverse cultural and personal backgrounds, including LGBTQ+ individuals and people with long-term health conditions. She brings warmth, sensitivity and clinical expertise to her work, ensuring therapy is tailored to each person’s experiences and goals.

Who Dr Mercer works with

• Children aged 6–10

• Pre-teens and teenagers

• Adults

• Individuals, couples and families

She is committed to inclusive, affirming care and is experienced in supporting a wide range of communities, including LGBTQ+ patients and individuals living with chronic health conditions or complex family dynamics.

Therapeutic approaches

Dr Mercer draws on a wide range of evidence-based therapeutic models and tailors her approach to meet each person’s needs. Her training includes:

• Acceptance and Commitment Therapy (ACT)

• Applied Behavioural Analysis (ABA)

• Attachment-based therapy

• Cognitive Behavioural Therapy (CBT)

• Compassion-Focused Therapy

• Dialectical Behaviour Therapy (DBT)

• Integrative therapy

• Internal Family Systems (IFS)

• Mindfulness-Based Cognitive Therapy (MBCT)

• Narrative therapy

• Parent-Child Interaction Therapy (PCIT)

• Play therapy

• Psychodynamic therapy

• Solution-Focused Brief Therapy (SFBT)

• Trauma-focused therapy

Dr Mercer believes therapy should offer space for vulnerability, reflection and connection, while also allowing room for progress, insight, and moments of lightness.