Health Sciences North Executive and Leadership Team

September, 2026

Leadership Overview

Health Sciences North has 5 executives leading key functions including strategy, financial oversight, information security, and medical staff governance.

Committed to excellence in patient care, Health Sciences North delivers specialized programs in cardiac care, oncology, and trauma rehabilitation to improve health outcomes across the region.

Leadership Roles at Health Sciences North

  • Chief Executive Officer - Marianne Mader
  • Chief Financial Officer - Corissa Weghe
  • Interim Chief Financial Officer - Debbie McQuarrie
  • Anesthesiologist and A President of the Medical Staff - Peter Zalan
  • Chief Information & Privacy Officer - Steve Volpini
  • Marianne Mader - Chief Executive Officer

    Marianne Mader, the Chief Executive Officer at Health Sciences North, directs the overarching strategic vision for all clinical and administrative operations. By aligning hospital resources with the complex needs of cardiac care and oncology departments, Mader ensures high-quality service delivery across the Ontario region. The Chief Executive Officer manages relationships with the Board of Directors to secure long-term institutional stability and growth. Through rigorous oversight of trauma and rehabilitation programs, Mader maintains operational excellence within the facility. Marianne Mader also champions initiatives that integrate advanced medical technology into daily workflows, enhancing patient safety protocols. This leadership role requires constant coordination with department heads to optimize resource allocation and maintain fiscal responsibility. By fostering a culture of continuous improvement, Mader drives the organization toward superior health outcomes for the community. Ultimately, the Chief Executive Officer secures the reputation of the hospital as a premier provider of specialized medical services.
    Marianne Mader

    Corissa Weghe - Chief Financial Officer

    Corissa Weghe, the Chief Financial Officer at Health Sciences North, manages the fiscal health and budgetary planning for all hospital departments. By overseeing capital investments in nephrology and trauma equipment, Weghe ensures the financial viability of critical medical services. The Chief Financial Officer directs the accounting teams to maintain transparency and regulatory compliance across all regional operations. Corissa Weghe also collaborates with executive leadership to allocate funding for facility expansions and technological upgrades. This role involves monitoring revenue cycles and cost-containment strategies to maximize the impact of available healthcare resources. By analyzing financial data, Weghe provides actionable insights that support the long-term sustainability of the organization. The Chief Financial Officer maintains rigorous standards for financial reporting, ensuring that every dollar supports the core mission of patient care. Through precise fiscal management, Weghe enables the hospital to continue providing essential services to the community while maintaining a stable economic foundation.
    Corissa Weghe

    Debbie McQuarrie - Interim Chief Financial Officer

    Debbie McQuarrie, the Interim Chief Financial Officer at Health Sciences North, executes short-term financial strategies while maintaining operational continuity during the transition period. By supervising the daily cash flow and departmental budgeting, McQuarrie ensures that cardiac care and oncology programs receive necessary funding without interruption. The Interim Chief Financial Officer monitors expenditure patterns to identify opportunities for operational efficiency across the facility. Debbie McQuarrie also coordinates with the finance department to prepare accurate reports for the Board of Directors regarding current fiscal performance. This leadership role involves stabilizing financial processes and mitigating risks associated with hospital-wide resource management. By maintaining strict oversight of procurement and payroll, McQuarrie supports the ongoing delivery of trauma and rehabilitation services. The Interim Chief Financial Officer provides essential guidance to the finance team, ensuring that all fiscal activities align with the broader goals of the organization. Through diligent management, McQuarrie preserves the financial integrity of the hospital during this critical phase.

    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, represents the interests of the clinical team while maintaining high standards for surgical care. By overseeing the administration of anesthesia during complex trauma and cardiac procedures, Zalan ensures patient safety and comfort. The Anesthesiologist and A President of the Medical Staff directs the medical staff governance committee to foster collaboration between physicians and hospital administration. Peter Zalan also advocates for clinical resources that improve the quality of care in the oncology and rehabilitation units. This leadership role involves mediating professional standards and promoting evidence-based medical practices across the facility. By facilitating communication between the medical staff and the executive team, Zalan ensures that clinical perspectives inform strategic decision-making. The Anesthesiologist and A President of the Medical Staff maintains a focus on patient-centered outcomes, driving the hospital toward excellence in surgical and perioperative services. Through active engagement, Zalan supports the professional development of the entire medical team.

    Steve Volpini - Chief Information & Privacy Officer

    Steve Volpini, the Chief Information & Privacy Officer at Health Sciences North, architects the digital infrastructure and data security frameworks necessary for modern hospital operations. By overseeing the protection of sensitive patient records, Volpini ensures full compliance with provincial privacy regulations. The Chief Information & Privacy Officer directs the implementation of advanced health information systems that support oncology and nephrology departments. Steve Volpini also manages the cybersecurity posture of the organization to prevent unauthorized access to critical medical data. This role involves collaborating with clinical staff to integrate electronic health records into daily patient care workflows. By optimizing network performance and data accessibility, Volpini enhances the efficiency of trauma and rehabilitation services. The Chief Information & Privacy Officer leads the IT department in maintaining robust systems that facilitate seamless communication between medical teams. Through strategic technology investments, Volpini secures the digital environment, allowing the hospital to focus on delivering high-quality care to the community.

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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 Corissa Weghe (Chief Financial Officer) and Debbie McQuarrie (Interim 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), Corissa Weghe (Chief Financial Officer), Debbie McQuarrie (Interim Chief Financial Officer) and other senior executives.
    How many executives does Health Sciences North have?
    Health Sciences North has 5 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, Chief Financial Officer, Interim Chief Financial Officer, Anesthesiologist and A President of the Medical Staff, Chief Information & Privacy Officer.