Susannah Margison, Toronto mediator, lawyer, and conflict strategist
Susannah Margison, Toronto mediator, lawyer, and conflict strategist

Mediator with Hendler Mediation.

Private Advisor.

Susannah mediates complex medical, healthcare and institutional disputes through Hendler Mediation.

Privately, she advises professionals and families when conflict, scrutiny and difficult decisions carry significant personal, professional or reputational consequences.

Based in Toronto. Working across Canada and internationally.

One area of expertise. Two distinct roles.

Susannah works in high-stakes conflict in two clearly defined capacities.

Mediation

As a mediator with Hendler Mediation, Susannah acts as the neutral in complex medical, healthcare and institutional disputes.

Her mediation work includes medical malpractice, hospital and institutional negligence, elder and long-term care disputes, institutional sexual abuse claims, and healthcare-related class actions.

She is often engaged when matters are medically complex, emotionally charged or reputationally sensitive—and when the process requires disciplined judgment, credibility with counsel and decision-makers, and an ability to create movement under pressure.

Private advisory

Susannah works alongside one professional or family navigating conflict, scrutiny or a consequential decision.

She helps clients see the whole situation and determine what happens next. This often means integrating specialized legal, financial or clinical advice with the human realities surrounding it: relationships, reputation, responsibility and sequencing.

The work may include clarifying objectives, separating facts from fears, preparing for difficult conversations, considering the consequences of different responses and developing a deliberate path forward.


Steady judgment when the consequences are significant

Across both mediation and private advisory, Susannah works in situations where the conflict is complex, the pressure is considerable and the consequences extend beyond the immediate issue.

She brings an ability to:

  • Understand complex legal, institutional and interpersonal dynamics quickly

  • Create structure when a situation feels volatile or unclear

  • Identify the interests, pressures and relationships driving the conflict

  • Reframe entrenched positions and open new paths forward

  • Maintain momentum through emotionally charged conversations

  • Work credibly with counsel, professionals and institutional decision-makers

  • Remain steady when the people involved are under significant pressure

As a mediator, Susannah uses these skills to hold a fair, disciplined process in which multiple parties can work toward resolution.

As a private advisor, she uses them to help one professional or family understand the whole situation, integrate specialized advice and decide how to move forward.

The role changes. The underlying capability does not.

Susannah Margison, mediator and conflict strategist

Experience that holds up under pressure

With nearly 15 years in conflict resolution, including a decade as a trial lawyer, Susannah brings disciplined process, strategic clarity and sound judgment to situations where the consequences are substantial.

She is known for bringing structure to high-conflict environments, reframing entrenched positions and helping people move forward without losing dignity, momentum or strategic focus.

Earlier in her career, Susannah served as legal counsel to national organizations, advised individuals navigating reputational conflict, and chaired one of Ontario’s largest interdisciplinary primary care boards.

These experiences inform her understanding of legal exposure, institutional dynamics, professional responsibility and the human realities beneath complex disputes.

Grounded in law. Attentive to human dynamics. Defined by discretion.

Begin the Conversation

When multiple parties need a credible neutral and a structured path toward resolution, contact Susannah through Hendler Mediation.

When one professional or family needs help understanding a high-stakes situation and deciding what comes next, explore private advisory or contact Susannah directly.