Health Sciences North Executive and Leadership Team

May, 2026

Leadership Overview

Health Sciences North has 8 executives leading key functions including strategy, operations, finance, information technology, and medical staff leadership.

Driven by a commitment to patient care, Health Sciences North delivers specialized programs in cardiac care, oncology, nephrology, trauma, and rehabilitation, impacting the health landscape of Greater Sudbury and surrounding regions.

Leadership Roles at Health Sciences North

  • Chief Executive Officer - Marianne Mader
  • President and Chief Executive Officer Health Sciences North and Horizon Santé-Nord - David McNeil
  • Chief Financial Officer - Corissa Weghe
  • Interim Chief Financial Officer - Debbie McQuarrie
  • Chief Operating Officer - David Joslin
  • Anesthesiologist and A President of the Medical Staff - Peter Zalan
  • Chief Operations Officer - Stephanie Deschenes
  • Chief Information & Privacy Officer - Steve Volpini
  • Marianne Mader - Chief Executive Officer

    Marianne Mader, the Chief Executive Officer at Health Sciences North, directs the overall strategic vision and operational execution for the organization. Mader guides the institution's commitment to providing advanced healthcare services across critical areas such as cardiac care, oncology, nephrology, trauma, and rehabilitation. This leadership role involves fostering a culture of innovation and excellence, ensuring that Health Sciences North remains at the forefront of medical advancements and patient-centered care within Greater Sudbury and the broader Northern Ontario region. Marianne Mader's oversight extends to aligning departmental goals with the overarching mission of improving community health outcomes and driving the organization's long-term sustainability and growth. The Chief Executive Officer's responsibilities include stakeholder engagement, resource allocation, and ensuring compliance with healthcare regulations.
    Marianne Mader

    David McNeil - President and Chief Executive Officer Health Sciences North and Horizon Santé-Nord

    David McNeil, the President and Chief Executive Officer Health Sciences North and Horizon Santé-Nord at Health Sciences North, spearheads the integrated leadership of both healthcare entities. McNeil's mandate involves unifying strategic objectives and operational frameworks to enhance the delivery of comprehensive health services across Northern Ontario. This dual leadership position requires a deep understanding of diverse healthcare needs and the ability to drive synergistic growth and efficiency between Health Sciences North and Horizon Santé-Nord. David McNeil focuses on expanding access to specialized care, including cardiac, oncology, nephrology, trauma, and rehabilitation services, while championing advancements in medical technology and patient care protocols. The President and Chief Executive Officer Health Sciences North and Horizon Santé-Nord ensures robust governance and strategic planning to meet the evolving healthcare demands of the region.

    Corissa Weghe - Chief Financial Officer

    Corissa Weghe, the Chief Financial Officer at Health Sciences North, directs all financial planning, management, and reporting activities for the organization. Weghe is responsible for fiscal health, including budgeting, financial analysis, and investment strategies that support the hospital's specialized services in cardiac care, oncology, nephrology, trauma, and rehabilitation. This executive function ensures financial stability and sustainability, enabling continued investment in advanced medical equipment and patient care initiatives across Northern Ontario. Corissa Weghe oversees financial operations, manages relationships with financial institutions, and ensures compliance with all relevant financial regulations and reporting standards. The Chief Financial Officer plays a critical role in resource allocation and strategic financial decision-making to support the organization's mission.
    Corissa Weghe

    Debbie McQuarrie - Interim Chief Financial Officer

    Debbie McQuarrie, the Interim Chief Financial Officer at Health Sciences North, provides critical financial oversight and guidance during a transitional period. McQuarrie manages the organization's financial operations, ensuring continuity in budgeting, financial reporting, and resource allocation for key healthcare programs like cardiac care, oncology, nephrology, trauma, and rehabilitation. This leadership position focuses on maintaining fiscal discipline and supporting strategic financial objectives while ensuring the hospital's operational needs are met. Debbie McQuarrie's responsibilities include overseeing financial planning, managing expenditures, and collaborating with other executive leaders to uphold the financial integrity of Health Sciences North. The Interim Chief Financial Officer ensures that financial strategies align with the organization's mission of providing high-quality patient care.

    David Joslin - Chief Operating Officer

    David Joslin, the Chief Operating Officer at Health Sciences North, manages the day-to-day operational activities and ensures the efficient delivery of all healthcare services. Joslin oversees the critical functions supporting programs in cardiac care, oncology, nephrology, trauma, and rehabilitation, optimizing resource utilization and workflow processes. This role is pivotal in translating strategic initiatives into tangible operational improvements, enhancing patient throughput and satisfaction across the Greater Sudbury facility. David Joslin's responsibilities include leading departmental teams, implementing best practices in healthcare management, and ensuring seamless coordination between clinical and administrative departments. The Chief Operating Officer drives operational excellence, focusing on quality improvement, safety protocols, and the effective deployment of medical technologies to support patient care.

    Peter Zalan - Anesthesiologist and A President of the Medical Staff

    Peter Zalan, the Anesthesiologist and A President of the Medical Staff at Health Sciences North, provides clinical leadership and advocates for the medical team. Zalan's dual role involves overseeing the professional conduct and operational needs of physicians, ensuring high standards of patient care across specialized services such as cardiac care, oncology, nephrology, trauma, and rehabilitation. This position requires a deep understanding of both clinical practice and the administrative requirements necessary to support medical staff effectively within the Greater Sudbury healthcare environment. Peter Zalan collaborates with hospital administration to align medical staff activities with the organization's strategic objectives and patient care mission. The Anesthesiologist and A President of the Medical Staff champions initiatives that enhance physician engagement and clinical excellence.

    Stephanie Deschenes - Chief Operations Officer

    Stephanie Deschenes, the Chief Operations Officer at Health Sciences North, drives the efficiency and effectiveness of the hospital's operational infrastructure. Deschenes oversees the execution of daily operations, ensuring seamless service delivery across all departments, including those focused on cardiac care, oncology, nephrology, trauma, and rehabilitation. This role is essential for optimizing patient flow, managing resources, and implementing operational improvements that enhance the quality of care provided in Greater Sudbury. Stephanie Deschenes collaborates with clinical and administrative teams to streamline processes, improve patient experiences, and ensure adherence to safety and quality standards. The Chief Operations Officer is instrumental in achieving organizational goals through strategic operational management and continuous process enhancement.

    Steve Volpini - Chief Information & Privacy Officer

    Steve Volpini, the Chief Information & Privacy Officer at Health Sciences North, directs the strategic implementation and management of information technology systems and data privacy protocols. Volpini ensures the security, integrity, and accessibility of patient information, supporting critical healthcare functions including cardiac care, oncology, nephrology, trauma, and rehabilitation services. This executive role is vital for leveraging technology to enhance operational efficiency, support clinical decision-making, and maintain strict compliance with privacy regulations across Northern Ontario. Steve Volpini oversees the development and execution of IT infrastructure, cybersecurity measures, and digital health initiatives. The Chief Information & Privacy Officer safeguards sensitive data while enabling technological advancements that improve patient care and organizational performance.

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    Frequently Asked Questions Regarding Health Sciences North Top Executives and Leadership Team

    Who leads Health Sciences North?
    Health Sciences North is led by Marianne Mader (Chief Executive Officer), along with executives such as David McNeil (President and Chief Executive Officer Health Sciences North and Horizon Santé-Nord) and Corissa Weghe (Chief Financial Officer).
    Who is part of Health Sciences North’s executive team?
    The executive team of Health Sciences North includes leaders such as Marianne Mader (Chief Executive Officer), David McNeil (President and Chief Executive Officer Health Sciences North and Horizon Santé-Nord), Corissa Weghe (Chief Financial Officer) and other senior executives.
    How many executives does Health Sciences North have?
    Health Sciences North has 8 executives leading key business areas.
    What roles are included in Health Sciences North’s leadership team?
    The leadership team of Health Sciences North includes roles such as Chief Executive Officer, President and Chief Executive Officer Health Sciences North and Horizon Santé-Nord, Chief Financial Officer, Interim Chief Financial Officer, Chief Operating Officer.