Accuray Executive and Leadership Team

August, 2026

Leadership Overview

Accuray has 6 executives leading key functions including human resources, financial strategy, medical oversight, and regional operations.

Focused on advancing precision radiation oncology, Accuray delivers innovative medical devices that enable clinicians to target tumors with exceptional accuracy while minimizing exposure to surrounding healthy tissue for patients globally.

Leadership Roles at Accuray

  • Senior Vice President - Chief Financial Officer - Ali Pervaiz
  • President & General Manager (Americas) - Nancy Hiller
  • Region President & General Manager (Japan) - Kazuharu Tomari
  • President & General Manager (Asia Pacific) - Johannes Diebold
  • Senior Vice President, Chief Human Resources Officer - Melanie Rivers
  • Senior Vice President, Chief Medical Officer - Seth Blacksburg
  • Ali Pervaiz - Senior Vice President - Chief Financial Officer

    Ali Pervaiz, the Senior Vice President - Chief Financial Officer at Accuray, manages the global financial strategy and capital allocation for the organization. By overseeing fiscal planning, Pervaiz ensures the company maintains the necessary resources to manufacture sophisticated radiation oncology systems. This leadership role involves rigorous financial reporting, investor relations, and risk management to support long-term growth in the medical device sector. Ali Pervaiz also directs the budgeting process for research and development, ensuring that investments in imaging and delivery technologies align with market demands. By optimizing the balance sheet, the Senior Vice President - Chief Financial Officer secures the financial stability required to expand the company's reach into new clinical markets. Pervaiz works closely with the board to evaluate strategic acquisitions and operational efficiencies. Through disciplined financial oversight, Pervaiz enables the organization to continue providing clinicians with the tools needed to improve patient outcomes.

    Nancy Hiller - President & General Manager (Americas)

    Nancy Hiller, the President & General Manager (Americas) at Accuray, oversees all commercial operations and market expansion across the North and South American regions. By driving regional sales strategies, Hiller ensures that hospitals and cancer treatment centers have access to advanced radiation oncology systems. This leadership role involves managing complex distribution networks and fostering relationships with key clinical stakeholders to increase market penetration. Nancy Hiller also directs the implementation of service and support programs that maintain the high performance of installed medical devices. By analyzing regional market trends, the President & General Manager (Americas) adapts the company's product positioning to meet the specific needs of diverse healthcare providers. Hiller coordinates with global leadership to ensure regional initiatives align with the broader corporate mission of improving cancer care. Through effective operational management, Hiller expands the footprint of the company's technology, enabling more patients to receive precise, adaptive radiation therapy.
    Nancy Hiller

    Kazuharu Tomari - Region President & General Manager (Japan)

    Kazuharu Tomari, the Region President & General Manager (Japan) at Accuray, directs all business activities and strategic growth within the Japanese market. By overseeing local commercial operations, Tomari ensures that the company's radiation oncology systems meet the rigorous clinical requirements of Japanese healthcare providers. This leadership role involves navigating complex regulatory environments and building strong partnerships with leading oncology centers. Kazuharu Tomari also manages the local service infrastructure to guarantee the reliability of imaging and delivery technologies during critical treatment courses. By focusing on customer satisfaction and clinical adoption, the Region President & General Manager (Japan) strengthens the company's competitive position in this key market. Tomari coordinates with global teams to integrate local market insights into the broader product development strategy. Through dedicated regional leadership, Tomari ensures that the company's advanced cancer treatment solutions remain accessible to clinicians and patients throughout Japan, supporting the organization's commitment to precision oncology.

    Johannes Diebold - President & General Manager (Asia Pacific)

    Johannes Diebold, the President & General Manager (Asia Pacific) at Accuray, manages the commercial strategy and operational execution across the diverse Asia Pacific region. By overseeing market development, Diebold ensures that the company's radiation oncology systems reach hospitals and specialized treatment facilities in emerging and established markets. This leadership role involves building robust sales channels and managing regional teams to drive the adoption of adaptive treatment planning technologies. Johannes Diebold also directs the implementation of clinical training programs that empower medical teams to utilize the company's platforms effectively. By monitoring regional healthcare trends, the President & General Manager (Asia Pacific) identifies opportunities for growth and service expansion. Diebold collaborates with global leadership to ensure regional operations support the company's overarching mission of improving cancer care outcomes. Through strategic regional management, Diebold expands the reach of the company's precision technology, providing more patients with access to advanced radiation therapy solutions.
    Johannes Diebold

    Melanie Rivers - Senior Vice President, Chief Human Resources Officer

    Melanie Rivers, the Senior Vice President, Chief Human Resources Officer at Accuray, directs all global talent acquisition and organizational development initiatives. By aligning workforce capabilities with the technical demands of manufacturing advanced radiation oncology systems, Rivers ensures the company maintains a high-performance culture. This leadership role involves designing comprehensive compensation structures and professional development programs that attract top-tier engineering and clinical talent. Overseeing internal communications and employee engagement, the Senior Vice President, Chief Human Resources Officer fosters a collaborative environment essential for innovation in medical device manufacturing. Melanie Rivers also manages complex organizational change initiatives to support the company's evolving business model. Through strategic workforce planning, Rivers optimizes human capital to drive operational excellence across all international facilities. This focus on talent management directly supports the delivery of precise cancer treatment solutions by ensuring the right expertise exists within every department.

    Seth Blacksburg - Senior Vice President, Chief Medical Officer

    Seth Blacksburg, the Senior Vice President, Chief Medical Officer at Accuray, leads the clinical strategy and medical affairs for the company's radiation oncology portfolio. By bridging the gap between engineering and clinical practice, Blacksburg ensures that all medical devices meet the highest standards for tumor targeting and patient safety. This leadership role involves collaborating with global medical teams to validate the efficacy of real-time imaging and adaptive treatment planning. Seth Blacksburg also directs clinical research initiatives that demonstrate the value of precision radiation therapy in treating complex malignancies. By engaging with the medical community, the Senior Vice President, Chief Medical Officer identifies emerging clinical needs that inform future product development. Blacksburg provides essential guidance on regulatory compliance and clinical evidence generation. Through this medical leadership, Blacksburg ensures that the company's technology remains at the forefront of cancer care, directly impacting the quality of life for patients undergoing treatment.
    Seth Blacksburg

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    Frequently Asked Questions Regarding Accuray Top Executives and Leadership Team

    Who leads Accuray?
    Accuray is led by Ali Pervaiz (Senior Vice President - Chief Financial Officer), along with executives such as Nancy Hiller (President & General Manager (Americas)) and Kazuharu Tomari (Region President & General Manager (Japan)).
    Who is part of Accuray’s executive team?
    The executive team of Accuray includes leaders such as Ali Pervaiz (Senior Vice President - Chief Financial Officer), Nancy Hiller (President & General Manager (Americas)), Kazuharu Tomari (Region President & General Manager (Japan)) and other senior executives.
    How many executives does Accuray have?
    Accuray has 6 executives leading key business areas.
    What roles are included in Accuray’s leadership team?
    The leadership team of Accuray includes roles such as Senior Vice President - Chief Financial Officer, President & General Manager (Americas), Region President & General Manager (Japan), President & General Manager (Asia Pacific), Senior Vice President, Chief Human Resources Officer.