Ellis Medicine Executive and Leadership Team

June, 2026

Leadership Overview

Ellis Medicine has 10 executives leading key functions including strategy, administration, finance, information technology, medical staff, human resources, and operations.

Dedicated to advancing patient care through comprehensive services, Ellis Medicine operates as a teaching healthcare system, providing extensive inpatient and outpatient care across critical medical disciplines and impacting community well-being.

Leadership Roles at Ellis Medicine

  • Chief Executive Officer - G.B. Serrill
  • Executive Administrator To the President and Chief Executive Officer and Board of Trustees - Virginia Rust
  • Chief Financial Officer - Danidl Rinaldi
  • Vice President - Finance and Chief Financial Officer - Marc Mesick
  • Chief Information Officer - Kelley Amin
  • Vice Chief of Staff - Douglas Finch
  • Chief of Staff Elect - Robert Joy
  • Chief Human Resources Officer & Shareholder - Joanna Davis
  • Chief Human Resources Officer & Shareholder - Letícia Alfon
  • Vice President & Chief Human Resources Officer - Deb Solomon
  • G.B. Serrill - Chief Executive Officer

    G.B. Serrill, the Chief Executive Officer at Ellis Medicine, directs the overall strategic vision and operational execution for the healthcare system. Serrill guides Ellis Medicine's mission to provide comprehensive inpatient and outpatient services, including specialized care in cardiac, cancer, emergency, neuroscience, and women's health. This leadership role involves fostering a culture of excellence and innovation across all departments, ensuring the delivery of high-quality patient care. Serrill oversees the integration of teaching initiatives within the hospital's framework, enhancing medical education and research. The Chief Executive Officer drives financial sustainability and long-term growth, aligning operational strategies with the evolving needs of the community served by Ellis Medicine. G.B. Serrill ensures the organization maintains its commitment to patient well-being and community health.

    Virginia Rust - Executive Administrator To the President and Chief Executive Officer and Board of Trustees

    Virginia Rust, the Executive Administrator To the President and Chief Executive Officer and Board of Trustees at Ellis Medicine, provides critical administrative support to the highest levels of leadership. Rust manages complex scheduling, facilitates communication, and organizes essential documentation for the President, Chief Executive Officer, and the Board of Trustees. This role is pivotal in ensuring the smooth functioning of executive operations and board governance. Virginia Rust coordinates meetings, prepares agendas, and disseminates information, enabling efficient decision-making processes. The Executive Administrator To the President and Chief Executive Officer and Board of Trustees supports strategic initiatives by maintaining organized records and facilitating seamless workflow between executive leadership and various hospital departments. Rust's meticulous attention to detail ensures operational continuity and supports the strategic objectives of Ellis Medicine.

    Danidl Rinaldi - Chief Financial Officer

    Danidl Rinaldi, the Chief Financial Officer at Ellis Medicine, manages the organization's financial health and strategic fiscal planning. Rinaldi oversees all financial operations, including budgeting, accounting, revenue cycle management, and financial reporting for the teaching healthcare system. This leadership position is crucial for ensuring the financial viability of Ellis Medicine's extensive inpatient and outpatient services, encompassing cardiac, cancer, emergency, neuroscience, and women's services. Danidl Rinaldi develops financial strategies to support operational growth and maintain the quality of care provided. The Chief Financial Officer works closely with other executives to allocate resources effectively and optimize financial performance across all departments. Rinaldi's expertise ensures Ellis Medicine can continue its mission of providing advanced medical care and education.

    Marc Mesick - Vice President - Finance and Chief Financial Officer

    Marc Mesick, the Vice President - Finance and Chief Financial Officer at Ellis Medicine, manages the financial operations and fiscal strategy for the healthcare system. Mesick oversees budgeting, financial analysis, revenue cycle management, and ensures the financial integrity of Ellis Medicine's extensive inpatient and outpatient services, including cancer and women's services. This dual role is critical for maintaining the financial health and sustainability of the teaching hospital. Marc Mesick works closely with the executive team to optimize financial performance and support strategic growth initiatives. The Vice President - Finance and Chief Financial Officer ensures compliance with financial regulations and drives efficiency in financial processes. Mesick's expertise is fundamental to Ellis Medicine's ability to provide advanced medical care and education.

    Kelley Amin - Chief Information Officer

    Kelley Amin, the Chief Information Officer at Ellis Medicine, directs the strategic implementation and management of information technology systems across the healthcare network. Amin is responsible for overseeing all aspects of IT infrastructure, electronic health records, cybersecurity, and digital transformation initiatives. This role is essential for supporting Ellis Medicine's comprehensive inpatient and outpatient services, including specialized care areas like cardiac, cancer, and neuroscience. Kelley Amin ensures that technology solutions enhance patient care delivery, improve operational efficiency, and support the teaching and research functions of the hospital. The Chief Information Officer collaborates with leadership to leverage data analytics for informed decision-making and strategic planning. Amin's focus is on maintaining secure, reliable, and advanced technological capabilities to meet the evolving needs of Ellis Medicine and its patients.

    Douglas Finch - Vice Chief of Staff

    Douglas Finch, the Vice Chief of Staff at Ellis Medicine, supports the Chief of Staff in overseeing the medical staff and ensuring the highest standards of clinical practice. Finch collaborates on initiatives related to physician credentialing, peer review, and the implementation of clinical protocols across all service lines, including cardiac, cancer, and emergency care. This position plays a vital role in maintaining the quality and safety of patient care within the teaching healthcare system. Douglas Finch contributes to the strategic direction of medical affairs, working to enhance physician engagement and professional development. The Vice Chief of Staff assists in managing relationships with medical staff members and addressing clinical operational challenges. Finch's leadership supports Ellis Medicine's commitment to excellence in patient treatment and medical education.

    Robert Joy - Chief of Staff Elect

    Robert Joy, the Chief of Staff Elect at Ellis Medicine, prepares to lead the medical staff and contribute to the strategic direction of clinical operations. Joy works closely with current leadership to understand and prepare for responsibilities in physician oversight, quality improvement initiatives, and the advancement of medical education programs. This role is integral to ensuring continuity and excellence in patient care across Ellis Medicine's extensive services, including neuroscience and women's health. Robert Joy gains insights into managing clinical departments and fostering collaboration among physicians and healthcare professionals. The Chief of Staff Elect supports the integration of new medical technologies and best practices. Joy's preparation is key to upholding Ellis Medicine's commitment to providing advanced, compassionate healthcare.

    Joanna Davis - Chief Human Resources Officer & Shareholder

    Joanna Davis, the Chief Human Resources Officer & Shareholder at Ellis Medicine, directs all human capital strategies and workforce development initiatives. Davis oversees talent acquisition, employee relations, compensation and benefits, and organizational development to support the healthcare system's mission. This leadership position is critical for attracting and retaining skilled medical professionals across all service lines, including cardiac, cancer, and emergency care. Joanna Davis ensures compliance with labor laws and promotes a positive and productive work environment. The Chief Human Resources Officer & Shareholder collaborates with executive leadership to align HR strategies with the overall business objectives of Ellis Medicine. Davis's expertise is vital for fostering a culture of engagement and supporting the growth of the teaching healthcare system.

    Letícia Alfon - Chief Human Resources Officer & Shareholder

    Letícia Alfon, the Chief Human Resources Officer & Shareholder at Ellis Medicine, spearheads comprehensive human resources functions and strategic workforce planning. Alfon manages talent management, employee engagement programs, and the development of policies that support Ellis Medicine's commitment to its staff and patients. This role is essential for cultivating a skilled and motivated workforce across all inpatient and outpatient services, including neuroscience and women's health. Letícia Alfon ensures that HR practices align with the organization's values and contribute to operational excellence. The Chief Human Resources Officer & Shareholder works to enhance employee well-being and professional growth, fostering a supportive environment. Alfon's leadership is instrumental in building a robust and dedicated team at Ellis Medicine.

    Deb Solomon - Vice President & Chief Human Resources Officer

    Deb Solomon, the Vice President & Chief Human Resources Officer at Ellis Medicine, oversees critical human resources operations and strategic workforce management. Solomon directs initiatives focused on talent acquisition, employee development, and fostering a positive organizational culture across the healthcare system. This position is key to supporting Ellis Medicine's extensive range of services, from cardiac care to emergency services, by ensuring a highly competent and engaged workforce. Deb Solomon collaborates with executive leadership to implement HR policies that enhance operational efficiency and employee satisfaction. The Vice President & Chief Human Resources Officer plays a vital role in talent retention and succession planning. Solomon's leadership ensures Ellis Medicine maintains a strong and dedicated team committed to patient care.

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    Frequently Asked Questions Regarding Ellis Medicine Top Executives and Leadership Team

    Who leads Ellis Medicine?
    Ellis Medicine is led by G.B. Serrill (Chief Executive Officer), along with executives such as Virginia Rust (Executive Administrator To the President and Chief Executive Officer and Board of Trustees) and Danidl Rinaldi (Chief Financial Officer).
    Who is part of Ellis Medicine’s executive team?
    The executive team of Ellis Medicine includes leaders such as G.B. Serrill (Chief Executive Officer), Virginia Rust (Executive Administrator To the President and Chief Executive Officer and Board of Trustees), Danidl Rinaldi (Chief Financial Officer) and other senior executives.
    How many executives does Ellis Medicine have?
    Ellis Medicine has 10 executives leading key business areas.
    What roles are included in Ellis Medicine’s leadership team?
    The leadership team of Ellis Medicine includes roles such as Chief Executive Officer, Executive Administrator To the President and Chief Executive Officer and Board of Trustees, Chief Financial Officer, Vice President - Finance and Chief Financial Officer, Chief Information Officer.