Health Sciences North Executive and Leadership Team

June, 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 focuses on delivering specialized medical services and advancing healthcare within its community, impacting patient outcomes through dedicated expertise.

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. This leadership role involves guiding all departments to ensure the delivery of high-quality patient care and advancing the hospital's mission within the Greater Sudbury region. Mader oversees the integration of cardiac care, oncology, nephrology, trauma, and rehabilitation services, ensuring seamless patient pathways and optimal resource allocation. The Chief Executive Officer collaborates with the board of directors and senior leadership to set organizational goals and drive performance metrics. By fostering a culture of innovation and excellence, Marianne Mader ensures Health Sciences North remains at the forefront of medical advancements and community health initiatives, directly impacting patient outcomes and institutional growth.
    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, holds ultimate responsibility for the strategic direction and comprehensive management of both entities. This dual leadership position requires orchestrating complex healthcare operations across distinct but related organizations, ensuring alignment with their respective missions and community needs. McNeil drives initiatives focused on enhancing patient services, particularly in specialized areas like cardiac care, oncology, and rehabilitation, while also overseeing financial health and operational efficiency. The President and Chief Executive Officer Health Sciences North and Horizon Santé-Nord works closely with medical staff and administrative teams to foster a collaborative environment dedicated to advancing healthcare delivery in Northern Ontario. David McNeil's leadership ensures the integrated success and sustained growth of Health Sciences North and Horizon Santé-Nord.

    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. This critical role involves overseeing budgeting, financial analysis, and capital allocation to support the hospital's extensive programs in cardiac care, oncology, nephrology, trauma, and rehabilitation. Weghe ensures fiscal responsibility and sustainability, managing financial risks and identifying opportunities for revenue enhancement and cost optimization. The Chief Financial Officer collaborates with senior leadership to align financial strategies with the overall mission of providing advanced healthcare services in Northern Ontario. By maintaining robust financial controls and transparent reporting, Corissa Weghe safeguards the institution's financial health and supports its long-term operational goals.
    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. This executive role focuses on maintaining the integrity of financial operations, including budgeting, forecasting, and resource management across all hospital services, such as cardiac care, oncology, and rehabilitation. McQuarrie ensures continuity in financial reporting and compliance, supporting the organization's commitment to fiscal prudence and operational stability. The Interim Chief Financial Officer works closely with the executive team to navigate financial challenges and opportunities, ensuring that resources are allocated effectively to support patient care initiatives. Debbie McQuarrie's leadership provides essential financial stability, enabling Health Sciences North to continue its vital work in the region.

    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 patient care services. This executive function involves overseeing the seamless integration of programs in cardiac care, oncology, nephrology, trauma, and rehabilitation, optimizing resource utilization and workflow across departments. Joslin directs operational strategies to enhance patient experience and clinical outcomes, working closely with department heads to implement best practices. The Chief Operating Officer is pivotal in maintaining the hospital's high standards of care and operational excellence within the Greater Sudbury area. By focusing on process improvement and staff support, David Joslin drives operational efficiency and contributes significantly to Health Sciences North's commitment to providing comprehensive medical services.

    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. This dual role involves overseeing the professional conduct and operational needs of physicians across all departments, including those specializing in cardiac care, oncology, and trauma services. Zalan ensures effective communication and collaboration between the medical staff and hospital administration, fostering an environment conducive to high-quality patient care and medical excellence. The Anesthesiologist and A President of the Medical Staff plays a vital part in shaping medical policies and procedures, contributing to the strategic direction of clinical services. Peter Zalan's dedication supports the advancement of medical practice and patient well-being within Health Sciences North.

    Stephanie Deschenes - Chief Operations Officer

    Stephanie Deschenes, the Chief Operations Officer at Health Sciences North, oversees the strategic and day-to-day operational functions critical to delivering specialized medical services. This leadership position involves managing the complex logistics of programs including cardiac care, oncology, nephrology, trauma, and rehabilitation, ensuring seamless patient flow and optimal resource deployment. Deschenes drives operational efficiency and excellence, implementing innovative solutions to enhance service delivery and patient outcomes across the Greater Sudbury region. The Chief Operations Officer collaborates with clinical and administrative teams to align operational strategies with the hospital's overarching mission. By focusing on process optimization and quality improvement, Stephanie Deschenes plays a key part in Health Sciences North's commitment to providing exceptional healthcare.

    Steve Volpini - Chief Information & Privacy Officer

    Steve Volpini, the Chief Information & Privacy Officer at Health Sciences North, directs the strategic development and implementation of information technology systems and data privacy protocols. This executive function is crucial for managing the hospital's digital infrastructure, ensuring secure and efficient access to patient information across all service lines, including cardiac care, oncology, and rehabilitation. Volpini oversees the integration of advanced technologies to support clinical operations and enhance data security, safeguarding patient confidentiality in compliance with all regulatory requirements. The Chief Information & Privacy Officer collaborates with leadership to align IT strategies with organizational goals, promoting innovation and operational resilience. Steve Volpini's leadership ensures Health Sciences North maintains robust technological capabilities and upholds the highest standards of data privacy.

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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.