Management Sciences for Health Executive and Leadership Team

May, 2026

Leadership Overview

Management Sciences for Health has 6 executives leading key functions including strategy, operations, finance, and medical affairs.

Driven by a commitment to global health equity, Management Sciences for Health works with communities to build resilient health systems, ensuring affordable and accessible care worldwide.

Leadership Roles at Management Sciences for Health

  • Chief Executive Officer - Rahamim Kalfa
  • President & Chief Executive Officer - Marian Wentworth
  • Manager, Corporate Finance (Office & Chief Financial Officer - Amanda Chan
  • Controller & Chief Financial Officer - Dianna O'Sullivan
  • Chief Operating Officer - Deborah Hutchison
  • Chief Medical Officer - Daniel Schwarz
  • Rahamim Kalfa - Chief Executive Officer

    Rahamim Kalfa, the Chief Executive Officer at Management Sciences for Health, directs the organization's overarching strategy and global operations. This leadership role involves setting the vision for improving health care systems in underserved communities worldwide. Kalfa focuses on fostering partnerships and securing resources to advance the mission of making health care affordable and accessible. Overseeing strategic initiatives, Rahamim Kalfa ensures alignment with the core values of Management Sciences for Health. The executive's responsibilities include driving innovation in health service delivery and advocating for policy changes that support equitable health outcomes. This position demands a deep understanding of global health challenges and a commitment to sustainable solutions. Kalfa's leadership guides the organization's efforts to strengthen health infrastructure and empower local health workforces.

    Marian Wentworth - President & Chief Executive Officer

    Marian Wentworth, the President & Chief Executive Officer at Management Sciences for Health, guides the organization's strategic direction and operational execution. Wentworth's leadership focuses on enhancing the accessibility and affordability of health care systems in partner countries. This role involves cultivating key relationships with governments, international organizations, and local communities to drive impactful health programs. Overseeing global initiatives, Marian Wentworth ensures that Management Sciences for Health effectively addresses critical health challenges. The executive's mandate includes fostering sustainable health solutions and expanding the organization's reach. Wentworth's strategic vision is central to strengthening health infrastructure and improving patient outcomes. This position requires a comprehensive grasp of global health dynamics and a dedication to equitable health service provision.

    Amanda Chan - Manager, Corporate Finance (Office & Chief Financial Officer

    Amanda Chan, the Manager, Corporate Finance (Office & Chief Financial Officer at Management Sciences for Health, oversees the organization's financial strategy and fiscal management. Chan's responsibilities include ensuring robust financial planning, budgeting, and reporting to support global health programs. This critical role involves managing financial resources to maximize their impact on health system development and accessibility. Overseeing financial operations, Amanda Chan ensures compliance with all relevant regulations and maintains the fiscal integrity of Management Sciences for Health. The executive's mandate extends to optimizing financial performance and identifying opportunities for sustainable funding. Chan's financial acumen is essential for the organization's long-term viability and its ability to serve vulnerable populations effectively. This position requires a keen understanding of non-profit finance and strategic resource allocation.

    Dianna O'Sullivan - Controller & Chief Financial Officer

    Dianna O'Sullivan, the Controller & Chief Financial Officer at Management Sciences for Health, directs the organization's comprehensive financial operations and reporting. O'Sullivan's leadership ensures the fiscal health and accountability of Management Sciences for Health, managing budgets, financial controls, and investment strategies. This role is pivotal in maintaining the trust of donors and partners through transparent financial stewardship. Overseeing financial integrity, Dianna O'Sullivan guarantees that resources are allocated effectively to support the mission of improving global health systems. The executive's responsibilities include developing financial policies and procedures that enhance operational efficiency and compliance. O'Sullivan's expertise is fundamental to the organization's capacity to deliver sustainable health solutions worldwide. This position requires a deep understanding of financial management within the non-profit sector.

    Deborah Hutchison - Chief Operating Officer

    Deborah Hutchison, the Chief Operating Officer at Management Sciences for Health, directs the organization's day-to-day operations and program implementation across diverse global settings. Hutchison's focus is on optimizing operational efficiency and ensuring the effective delivery of health services in line with the company's mission. This leadership position involves managing complex project portfolios and overseeing the logistical frameworks that support health system strengthening initiatives. Overseeing operational scaling, Deborah Hutchison ensures that Management Sciences for Health can effectively respond to the health needs of communities. The executive's responsibilities include enhancing internal processes and resource allocation to maximize program impact. Hutchison's operational expertise is critical for translating strategic goals into tangible health improvements worldwide. This role demands meticulous planning and execution to sustain and grow the organization's vital work.
    Deborah Hutchison

    Daniel Schwarz - Chief Medical Officer

    Daniel Schwarz, the Chief Medical Officer at Management Sciences for Health, provides critical medical and public health expertise to guide the organization's programmatic efforts. Schwarz's role involves ensuring that all health initiatives are evidence-based, clinically sound, and aligned with best practices in global health. This leadership position is essential for shaping strategies that address complex health challenges in diverse communities. Overseeing medical strategy, Daniel Schwarz ensures that Management Sciences for Health effectively implements interventions that improve patient care and health outcomes. The executive's responsibilities include advising on clinical protocols and evaluating the efficacy of health programs. Schwarz's medical insights are fundamental to the organization's mission of making health care affordable and accessible. This role demands a profound understanding of medical science and its application in resource-limited settings.

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    Frequently Asked Questions Regarding Management Sciences for Health Top Executives and Leadership Team

    Who leads Management Sciences for Health?
    Management Sciences for Health is led by Rahamim Kalfa (Chief Executive Officer), along with executives such as Marian Wentworth (President & Chief Executive Officer) and Amanda Chan (Manager, Corporate Finance (Office & Chief Financial Officer).
    Who is part of Management Sciences for Health’s executive team?
    The executive team of Management Sciences for Health includes leaders such as Rahamim Kalfa (Chief Executive Officer), Marian Wentworth (President & Chief Executive Officer), Amanda Chan (Manager, Corporate Finance (Office & Chief Financial Officer) and other senior executives.
    How many executives does Management Sciences for Health have?
    Management Sciences for Health has 6 executives leading key business areas.
    What roles are included in Management Sciences for Health’s leadership team?
    The leadership team of Management Sciences for Health includes roles such as Chief Executive Officer, President & Chief Executive Officer, Manager, Corporate Finance (Office & Chief Financial Officer, Controller & Chief Financial Officer, Chief Operating Officer.