Tennessee Oncology Executive and Leadership Team

October, 2026

Leadership Overview

Tennessee Oncology has 4 executives leading key functions including strategy, operations, financial management, and clinical excellence.

Committed to advancing cancer care standards, Tennessee Oncology delivers comprehensive oncology services across Middle Tennessee, Chattanooga, and Northwest Georgia while maintaining a physician-owned model focused on superior patient outcomes.

Leadership Roles at Tennessee Oncology

  • President & Chief Executive Officer - Natalie Dickson
  • Chief Financial Officer - Ronald Horowitz
  • Chief Operating Officer - Bill Alexander
  • Chief Medical Officer - Casey Chollet-Lipscomb
  • Natalie Dickson - President & Chief Executive Officer

    Natalie Dickson, the President & Chief Executive Officer at Tennessee Oncology, directs the overarching strategic vision for this physician-owned practice. Overseeing the expansion of cancer care services across Middle Tennessee and beyond, the President & Chief Executive Officer ensures alignment between clinical innovation and operational efficiency. This leadership role involves coordinating with the Board to maintain high standards in outpatient chemotherapy and specialized nursing care. By fostering a culture of excellence, Natalie Dickson drives the organization toward improved patient outcomes and sustainable growth. The President & Chief Executive Officer manages complex relationships with regional healthcare partners to solidify the market position of the practice. Through rigorous oversight of the 30 locations, Dickson secures the long-term viability of the enterprise while championing advanced treatment protocols that define the reputation of the organization within the competitive oncology landscape.
    Natalie Dickson

    Ronald Horowitz - Chief Financial Officer

    Ronald Horowitz, the Chief Financial Officer at Tennessee Oncology, directs the fiscal strategy and financial health of the organization. Overseeing capital investments in medical technology and facility expansion, the Chief Financial Officer ensures the long-term economic stability of the physician-owned practice. This leadership role involves managing revenue cycles and budgeting for specialized oncology services across the regional footprint. By analyzing market trends and operational costs, Ronald Horowitz drives financial performance and resource optimization. The Chief Financial Officer collaborates with the executive team to align fiscal goals with the broader mission of delivering innovative cancer treatments. Through rigorous financial planning, Horowitz secures the necessary funding to support the growth of the practice in Middle Tennessee and beyond. This dedication to fiscal discipline allows the organization to invest in advanced patient education and support services while maintaining a robust and sustainable business model.

    Bill Alexander - Chief Operating Officer

    Bill Alexander, the Chief Operating Officer at Tennessee Oncology, manages the daily operational workflows across all 30 clinical locations. Overseeing the integration of laboratory services and PET/CT diagnostics, the Chief Operating Officer optimizes resource allocation to ensure seamless patient care delivery. This leadership role involves streamlining administrative processes to support the 75 physicians within the network. By implementing scalable infrastructure, Bill Alexander drives operational efficiency throughout Middle Tennessee, Chattanooga, and Northwest Georgia. The Chief Operating Officer coordinates with department heads to maintain compliance and service quality standards. Through constant monitoring of facility performance, Alexander ensures that the operational framework supports the mission of providing accessible, high-quality cancer care. This focus on logistical precision allows the practice to maintain its status as a leader in the oncology sector while managing the complexities of a large, multi-site medical organization.
    Bill Alexander

    Casey Chollet-Lipscomb - Chief Medical Officer

    Casey Chollet-Lipscomb, the Chief Medical Officer at Tennessee Oncology, directs the clinical standards and medical quality initiatives across the entire network. Overseeing the implementation of innovative treatment protocols and specialized nursing care, the Chief Medical Officer ensures that every patient receives evidence-based, high-quality support. This leadership role involves mentoring the 75 physicians and coordinating clinical research efforts to improve patient outcomes. By fostering collaboration among oncology specialists, Casey Chollet-Lipscomb drives excellence in outpatient chemotherapy and diagnostic services. The Chief Medical Officer monitors clinical performance metrics to maintain the reputation of the practice as a leader in cancer care. Through active engagement with the medical staff, Chollet-Lipscomb ensures that the organization remains at the forefront of oncology advancements. This focus on clinical integrity and patient-centered care defines the strategic direction of the medical services provided throughout the regional network.
    Casey Chollet-Lipscomb

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    Frequently Asked Questions Regarding Tennessee Oncology Top Executives and Leadership Team

    Who leads Tennessee Oncology?
    Tennessee Oncology is led by Natalie Dickson (President & Chief Executive Officer), along with executives such as Ronald Horowitz (Chief Financial Officer) and Bill Alexander (Chief Operating Officer).
    Who is part of Tennessee Oncology’s executive team?
    The executive team of Tennessee Oncology includes leaders such as Natalie Dickson (President & Chief Executive Officer), Ronald Horowitz (Chief Financial Officer), Bill Alexander (Chief Operating Officer) and other senior executives.
    How many executives does Tennessee Oncology have?
    Tennessee Oncology has 4 executives leading key business areas.
    What roles are included in Tennessee Oncology’s leadership team?
    The leadership team of Tennessee Oncology includes roles such as President & Chief Executive Officer, Chief Financial Officer, Chief Operating Officer, Chief Medical Officer.