Summit Healthcare Executive and Leadership Team

August, 2026

Leadership Overview

Summit Healthcare has 10 executives leading key functions including strategy, technology, finance, clinical governance, human resources, medical operations, and compliance.

Committed to regional health excellence, Summit Healthcare delivers comprehensive medical services to the Arizona White Mountains through advanced diagnostic, surgical, and emergency care solutions.

Leadership Roles at Summit Healthcare

  • Chief Executive Officer - Jack Koshkerman
  • Chief Financial Officer - David Rothenberger
  • President of Summit Healthcare Advanced Practice Providers Group - Quezia Hall
  • Chief Information Officer - Jay Larson
  • Vice Chief of Staff - Ian Brimhall
  • Chief of Staff & Board Member - Chad Brimhall
  • Chief Human Resources Officer - Connie Kakavas
  • Chief Medical Officer - Jeffrey Northup
  • Chief Operations Officer - Jonathan Fish
  • Director, Compliance - Laura Nicks
  • Jack Koshkerman - Chief Executive Officer

    Jack Koshkerman, the Chief Executive Officer at Summit Healthcare, directs the overarching strategic vision for the hospital system. Koshkerman manages the integration of cancer care, cardiac services, and general surgery to ensure high-quality patient outcomes across the Arizona White Mountains. By aligning departmental goals with the broader mission of community health, the Chief Executive Officer fosters a culture of operational excellence and fiscal responsibility. Jack Koshkerman maintains constant communication with the Board to refine long-term growth initiatives and service expansion. This leadership role requires balancing complex regulatory requirements with the immediate needs of the local population. Through rigorous oversight of hospital performance metrics, the Chief Executive Officer drives continuous improvement in clinical delivery. Koshkerman ensures that all facilities maintain the highest standards of care, ultimately securing the reputation of the organization as a primary healthcare provider for the region.

    David Rothenberger - Chief Financial Officer

    David Rothenberger, the Chief Financial Officer at Summit Healthcare, manages the fiscal health and resource allocation for the entire hospital system. Rothenberger oversees the budgeting process for cancer care, cardiac services, and diagnostic imaging to ensure long-term sustainability. By analyzing revenue cycles and operational costs, the Chief Financial Officer identifies opportunities for financial optimization within the Arizona White Mountains market. David Rothenberger collaborates with other C-suite leaders to align capital investments with the strategic goals of the organization. This leadership position involves rigorous financial reporting and the management of complex insurance reimbursement structures. Through careful monitoring of economic trends, the Chief Financial Officer secures the necessary funding for facility upgrades and medical equipment procurement. Rothenberger maintains the financial integrity of the institution, ensuring that resources remain available to support the diverse healthcare needs of the local community.

    Quezia Hall - President of Summit Healthcare Advanced Practice Providers Group

    Quezia Hall, the President of Summit Healthcare Advanced Practice Providers Group at Summit Healthcare, leads the integration of nurse practitioners and physician assistants into the clinical care model. Hall manages the scope of practice and professional development for advanced practice providers to ensure high-quality care in the Arizona White Mountains. By aligning the group's activities with the hospital's broader medical strategy, the President of Summit Healthcare Advanced Practice Providers Group enhances access to primary and specialized services. Quezia Hall collaborates with the Chief Medical Officer to optimize the utilization of mid-level providers in emergency and surgical settings. This role involves establishing clinical standards and performance benchmarks for the group. Through the effective management of these providers, the President of Summit Healthcare Advanced Practice Providers Group drives improvements in patient throughput and care continuity. Hall ensures that the team remains a vital component of the hospital's clinical success.
    Quezia Hall

    Jay Larson - Chief Information Officer

    Jay Larson, the Chief Information Officer at Summit Healthcare, architects the digital infrastructure necessary for modern hospital operations. Larson manages the secure implementation of electronic health records and diagnostic imaging systems to support clinical staff in the Arizona White Mountains. By optimizing data flow between emergency services and specialized care units, the Chief Information Officer enhances the speed and accuracy of patient treatment. Jay Larson coordinates with the executive team to deploy advanced cybersecurity measures that protect sensitive medical information. This role involves evaluating new health technologies to improve operational efficiency and patient engagement. Through the strategic deployment of network resources, the Chief Information Officer ensures that all hospital departments remain connected and functional. Larson drives the digital transformation of the facility, providing the technological foundation required for high-quality care delivery across the entire regional network.
    Jay Larson

    Ian Brimhall - Vice Chief of Staff

    Ian Brimhall, the Vice Chief of Staff at Summit Healthcare, supports the clinical leadership team in maintaining high standards of medical practice. Brimhall coordinates physician schedules and peer review processes to ensure consistent care quality across all departments. By facilitating communication between the medical staff and hospital administration, the Vice Chief of Staff promotes a collaborative environment focused on patient safety. Ian Brimhall assists in the development of clinical protocols for emergency services and wound care within the Arizona White Mountains. This role involves addressing complex medical staff issues and ensuring compliance with hospital bylaws. Through active participation in governance committees, the Vice Chief of Staff contributes to the strategic planning of clinical service lines. Brimhall ensures that the medical team remains aligned with the mission of the organization, ultimately fostering a culture of excellence in every patient interaction.

    Chad Brimhall - Chief of Staff & Board Member

    Chad Brimhall, the Chief of Staff & Board Member at Summit Healthcare, bridges the gap between clinical operations and corporate governance. Brimhall represents the medical staff perspective during board meetings to ensure that strategic decisions reflect the realities of patient care in the Arizona White Mountains. By overseeing the credentialing and performance standards of the physician group, the Chief of Staff & Board Member maintains the integrity of the hospital's clinical services. Chad Brimhall collaborates with executive leadership to define the long-term direction of the organization. This dual role requires balancing administrative duties with the need for high-quality medical outcomes. Through the implementation of rigorous governance policies, the Chief of Staff & Board Member ensures that all hospital activities align with regulatory requirements. Brimhall drives the development of clinical initiatives that improve the overall health impact of the facility on the local population.

    Connie Kakavas - Chief Human Resources Officer

    Connie Kakavas, the Chief Human Resources Officer at Summit Healthcare, directs the talent acquisition and workforce development strategies for the hospital. Kakavas manages the recruitment of specialized medical professionals to support cancer care, cardiac services, and general surgery in the Arizona White Mountains. By fostering a positive workplace culture, the Chief Human Resources Officer ensures high retention rates among clinical and administrative staff. Connie Kakavas oversees employee benefits, training programs, and labor relations to maintain operational stability. This role involves aligning human capital strategies with the broader mission of the organization to provide exceptional patient care. Through the implementation of performance management systems, the Chief Human Resources Officer drives professional growth and accountability across all departments. Kakavas ensures that the workforce remains equipped to handle the evolving demands of the healthcare industry, ultimately supporting the long-term success of the hospital system.
    Connie Kakavas

    Jeffrey Northup - Chief Medical Officer

    Jeffrey Northup, the Chief Medical Officer at Summit Healthcare, oversees the clinical quality and medical standards across all hospital departments. Northup manages the implementation of evidence-based practices in cancer care, cardiac services, and emergency medicine to ensure superior patient outcomes in the Arizona White Mountains. By leading the medical staff, the Chief Medical Officer drives initiatives that improve clinical efficiency and patient safety. Jeffrey Northup collaborates with the executive team to integrate new medical technologies and treatment protocols into daily operations. This role involves monitoring clinical performance metrics and addressing any gaps in care delivery. Through the development of physician leadership programs, the Chief Medical Officer fosters a culture of continuous learning and excellence. Northup ensures that the hospital remains at the forefront of medical innovation, providing the community with access to high-quality, reliable healthcare services.

    Jonathan Fish - Chief Operations Officer

    Jonathan Fish, the Chief Operations Officer at Summit Healthcare, manages the daily logistical and administrative functions of the hospital system. Fish oversees the efficient operation of diagnostic imaging, home health, and emergency services to ensure seamless patient flow in the Arizona White Mountains. By optimizing facility utilization and supply chain management, the Chief Operations Officer reduces operational waste and improves service delivery. Jonathan Fish coordinates with department heads to implement process improvements that enhance the overall patient experience. This role involves managing the physical infrastructure and ensuring that all hospital facilities meet safety and regulatory standards. Through the strategic oversight of operational workflows, the Chief Operations Officer drives productivity and cost-effectiveness. Fish ensures that the hospital remains fully functional and responsive to the needs of the community, providing a stable environment for both patients and medical staff.

    Laura Nicks - Director, Compliance

    Laura Nicks, the Director, Compliance at Summit Healthcare, manages the regulatory adherence and risk management programs for the hospital. Nicks oversees the implementation of policies that ensure compliance with state and federal healthcare laws across all service lines in the Arizona White Mountains. By conducting regular audits and training sessions, the Director, Compliance mitigates legal risks and promotes ethical conduct throughout the organization. Laura Nicks collaborates with the executive team to address regulatory changes and maintain the hospital's accreditation status. This role involves investigating potential compliance issues and developing corrective action plans to prevent future occurrences. Through the rigorous monitoring of hospital operations, the Director, Compliance ensures that all clinical and administrative activities meet the highest standards of integrity. Nicks drives the culture of accountability, protecting the reputation of the institution while supporting the delivery of safe and compliant patient care.

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    Frequently Asked Questions Regarding Summit Healthcare Top Executives and Leadership Team

    Who leads Summit Healthcare?
    Summit Healthcare is led by Jack Koshkerman (Chief Executive Officer), along with executives such as David Rothenberger (Chief Financial Officer) and Quezia Hall (President of Summit Healthcare Advanced Practice Providers Group).
    Who is part of Summit Healthcare’s executive team?
    The executive team of Summit Healthcare includes leaders such as Jack Koshkerman (Chief Executive Officer), David Rothenberger (Chief Financial Officer), Quezia Hall (President of Summit Healthcare Advanced Practice Providers Group) and other senior executives.
    How many executives does Summit Healthcare have?
    Summit Healthcare has 10 executives leading key business areas.
    What roles are included in Summit Healthcare’s leadership team?
    The leadership team of Summit Healthcare includes roles such as Chief Executive Officer, Chief Financial Officer, President of Summit Healthcare Advanced Practice Providers Group, Chief Information Officer, Vice Chief of Staff.