Mackenzie Health Executive and Leadership Team

July, 2026

Leadership Overview

Mackenzie Health has 10 executives leading key functions including strategy, technology, information systems, finance, medical planning, digital health, and volunteer engagement.

Driven by a commitment to patient-centered care, Mackenzie Health provides essential services across cancer care, mental health, pediatrics, and intensive care, significantly impacting healthcare delivery in Ontario, Canada.

Leadership Roles at Mackenzie Health

  • President & Chief Executive Officer - Nicole McCahon
  • President & Chief Executive Officer - Carmine Stumpo
  • Interim President & Chief Executive Officer - Mary-Agnes Wilson
  • Vice President, Finance & Chief Financial Officer - Gregory Chow
  • Member, President's Community Advisory Council - Loren Freid
  • President & Association Volunteer - Zina Villamagna
  • Chief Technology Officer - Patrick Harkins
  • Chief Information Officer - Diane Salois-Swallow
  • Vice President, Medical Planning & Chief of Staff - Stephen Jackson
  • Vice President, Digital Health & Chief Information Officer - Purvi Desai
  • Nicole McCahon - President & Chief Executive Officer

    Nicole McCahon directs Mackenzie Health's overarching strategy and operational execution. This leadership role involves setting the vision for the organization's continued growth and service expansion across critical healthcare areas like cancer care, mental health, and pediatrics. McCahon ensures alignment with the organization's mission to provide exceptional patient care throughout Ontario, Canada. Overseeing all executive functions, this position drives the strategic initiatives that enhance the quality and accessibility of services. The President & Chief Executive Officer role demands a comprehensive understanding of healthcare management and a commitment to fostering a culture of excellence. Nicole McCahon's leadership guides the organization's response to evolving healthcare needs and market dynamics, ensuring sustainable operations and impactful patient outcomes.

    Carmine Stumpo - President & Chief Executive Officer

    Carmine Stumpo spearheads Mackenzie Health's strategic direction and operational management. This executive position involves defining the organization's long-term goals and ensuring the effective delivery of comprehensive healthcare services, including specialized areas such as cancer care and intensive care units. Stumpo's leadership focuses on enhancing patient experiences and driving innovation within the healthcare sector in Ontario, Canada. The President & Chief Executive Officer role encompasses the oversight of all departments, ensuring seamless integration of services and adherence to the highest standards of medical practice. Carmine Stumpo's influence extends to fostering key partnerships and advancing the organization's mission to provide accessible, high-quality healthcare to the community it serves.
    Carmine Stumpo

    Mary-Agnes Wilson - Interim President & Chief Executive Officer

    Mary-Agnes Wilson provides interim leadership for Mackenzie Health's executive functions, guiding strategic initiatives and operational oversight. This critical role ensures continuity in the organization's mission to deliver comprehensive healthcare services, encompassing areas from pediatrics to mental health care. Wilson's focus is on maintaining high standards of patient care and operational efficiency throughout the transition period. The Interim President & Chief Executive Officer position involves close collaboration with department heads and stakeholders to uphold the organization's commitment to the community in Ontario, Canada. Mary-Agnes Wilson's leadership ensures that Mackenzie Health continues to meet the evolving healthcare needs of its patient population while preparing for future leadership.

    Gregory Chow - Vice President, Finance & Chief Financial Officer

    Gregory Chow directs Mackenzie Health's financial operations and fiscal strategy. This executive role involves overseeing budgeting, financial planning, and resource allocation across all departments, including specialized services like cancer care and mental health. Chow ensures the financial stability and sustainability of the organization, managing investments and expenditures to support patient care initiatives in Ontario, Canada. The Vice President, Finance & Chief Financial Officer position requires rigorous financial oversight and strategic decision-making to optimize revenue streams and control costs. Gregory Chow's leadership ensures that Mackenzie Health maintains robust financial health, enabling continued investment in advanced medical technologies and patient services.

    Loren Freid - Member, President's Community Advisory Council

    Loren Freid contributes to Mackenzie Health's strategic direction through participation in the President's Community Advisory Council. This role involves providing valuable community insights and feedback to guide the organization's healthcare services, including cancer care and pediatrics. Freid's involvement ensures that the council's recommendations align with community needs and support the organization's mission in Ontario, Canada. The Member, President's Community Advisory Council position offers a vital link between the community and the executive leadership, fostering a responsive and patient-centered approach. Loren Freid's perspective helps shape Mackenzie Health's commitment to serving its diverse population effectively.
    Loren Freid

    Zina Villamagna - President & Association Volunteer

    Zina Villamagna leads Mackenzie Health's volunteer association, driving engagement and support for the organization's healthcare initiatives. This executive role involves coordinating volunteer efforts across various departments, including those providing mental health care and intensive care services. Villamagna fosters a dedicated volunteer community committed to enhancing patient experiences and supporting operational needs in Ontario, Canada. The President & Association Volunteer position is essential for mobilizing community support and enriching the services provided by Mackenzie Health. Zina Villamagna's leadership ensures that volunteers are effectively integrated, contributing significantly to the organization's compassionate care model.

    Patrick Harkins - Chief Technology Officer

    Patrick Harkins architects Mackenzie Health's technology strategy and infrastructure. This executive role involves overseeing the implementation and management of advanced technological solutions that support the organization's diverse healthcare services, including critical care and cancer treatment. Harkins drives innovation in digital platforms and IT systems to enhance operational efficiency and patient care delivery across Ontario, Canada. The Chief Technology Officer position requires a deep understanding of cybersecurity, data management, and emerging technologies within the healthcare landscape. Patrick Harkins ensures that Mackenzie Health's technological capabilities remain at the forefront, enabling seamless data flow and robust support for medical professionals and patients alike.
    Patrick Harkins

    Diane Salois-Swallow - Chief Information Officer

    Diane Salois-Swallow manages Mackenzie Health's information systems and data governance. This executive role focuses on optimizing the technology infrastructure that supports patient care, administrative functions, and research initiatives. Salois-Swallow ensures the secure and efficient management of sensitive patient data, critical for services like pediatrics and ICU operations. The Chief Information Officer position involves strategic planning for IT resources, system integration, and the adoption of new digital tools to improve healthcare delivery in Ontario, Canada. Diane Salois-Swallow's leadership ensures that Mackenzie Health leverages information technology effectively to enhance operational performance and patient outcomes.

    Stephen Jackson - Vice President, Medical Planning & Chief of Staff

    Stephen Jackson leads the strategic planning and coordination of medical services at Mackenzie Health. This executive role involves ensuring the optimal deployment of clinical resources and the integration of medical staff to support comprehensive patient care, including pediatrics and intensive care units. Jackson oversees the development and implementation of medical policies and procedures, fostering collaboration among healthcare professionals across Ontario, Canada. The Vice President, Medical Planning & Chief of Staff position is crucial for aligning clinical operations with the organization's mission and strategic objectives. Stephen Jackson's leadership ensures that Mackenzie Health provides high-quality, coordinated medical care, enhancing both patient outcomes and the overall healthcare experience.

    Purvi Desai - Vice President, Digital Health & Chief Information Officer

    Purvi Desai drives Mackenzie Health's digital health transformation and information technology strategy. This executive role focuses on leveraging digital solutions to enhance patient engagement, streamline clinical workflows, and improve access to care across services like mental health and cancer treatment. Desai oversees the development and implementation of innovative digital health platforms and data analytics to support patient care in Ontario, Canada. The Vice President, Digital Health & Chief Information Officer position is pivotal in modernizing healthcare delivery through technology. Purvi Desai's leadership ensures Mackenzie Health remains at the forefront of digital innovation, improving efficiency and patient outcomes through advanced technological integration.

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    Frequently Asked Questions Regarding Mackenzie Health Top Executives and Leadership Team

    Who leads Mackenzie Health?
    Mackenzie Health is led by Nicole McCahon (President & Chief Executive Officer), along with executives such as Carmine Stumpo (President & Chief Executive Officer) and Mary-Agnes Wilson (Interim President & Chief Executive Officer).
    Who is part of Mackenzie Health’s executive team?
    The executive team of Mackenzie Health includes leaders such as Nicole McCahon (President & Chief Executive Officer), Carmine Stumpo (President & Chief Executive Officer), Mary-Agnes Wilson (Interim President & Chief Executive Officer) and other senior executives.
    How many executives does Mackenzie Health have?
    Mackenzie Health has 10 executives leading key business areas.
    What roles are included in Mackenzie Health’s leadership team?
    The leadership team of Mackenzie Health includes roles such as President & Chief Executive Officer, President & Chief Executive Officer, Interim President & Chief Executive Officer, Vice President, Finance & Chief Financial Officer, Member, President's Community Advisory Council.