Asante Executive and Leadership Team

June, 2026

Leadership Overview

Asante has 10 executives leading key functions including strategy, operations, and clinical services.

Driven by a commitment to community health, Asante provides comprehensive medical care across Southern Oregon and Northern California, focusing on accessible, high-quality healthcare services.

Leadership Roles at Asante

  • Chief Executive Officer - Michael Zdeblick
  • President & Chief Executive Officer - Thomas Gessel
  • MD and Chief Executive Officer - Larry Whyte
  • Senior Vice President & Chief Financial Officer - Heather Rowenhorst
  • Medical Director & Chief of Staff - Daniel Moline
  • Senior Vice President Chief Human Resources Officer - Margaret Luna
  • Medical Director & Chief of Staff - Jonathan Gell
  • Senior Vice President and Chief Information Officer - David Kinyon
  • Chief Medical Officer - Jamie Grebosky
  • Chief Operations Officer - Wilson Wizimane
  • Michael Zdeblick - Chief Executive Officer

    Michael Zdeblick, the Chief Executive Officer at Asante, directs the organization's overarching strategic vision and operational framework. Zdeblick guides Asante's mission to deliver comprehensive medical care across a nine-county region, encompassing Southern Oregon and Northern California. This leadership involves ensuring the integration and efficient functioning of all Asante entities, including Asante Ashland Community Hospital, Asante Physician Partners, Asante Rogue Regional Medical Center, and Asante Three Rivers Medical Center. The Chief Executive Officer's purview extends to fostering strong community relationships and upholding the not-for-profit governance structure. Michael Zdeblick's strategic direction is critical for navigating the evolving healthcare landscape and maintaining high standards of patient care throughout the extensive service area. This executive role demands a deep understanding of healthcare economics, regulatory compliance, and community needs to sustain and grow Asante's vital services.

    Thomas Gessel - President & Chief Executive Officer

    Thomas Gessel, the President & Chief Executive Officer at Asante, spearheads the strategic direction and executive leadership for the comprehensive medical care provider. Gessel's responsibilities encompass driving the organization's mission across Southern Oregon and Northern California, ensuring the seamless operation of its diverse healthcare facilities. This includes Asante Ashland Community Hospital, Asante Physician Partners, Asante Rogue Regional Medical Center, and Asante Three Rivers Medical Center. The President & Chief Executive Officer role involves cultivating a culture of excellence, overseeing financial health, and championing initiatives that enhance patient outcomes and community well-being. Thomas Gessel's leadership is pivotal in maintaining Asante's position as a cornerstone of local healthcare, navigating complex healthcare policies, and fostering innovation within the not-for-profit framework. Gessel's executive oversight ensures robust governance and strategic growth across all Asante's service lines.
    Thomas Gessel

    Larry Whyte - MD and Chief Executive Officer

    Larry Whyte, the MD and Chief Executive Officer at Asante, provides critical clinical and executive leadership to the organization's extensive healthcare network. Whyte's dual role as a medical doctor and chief executive ensures a deep understanding of patient care alongside strategic business operations. This leadership is essential for guiding Asante's mission to deliver comprehensive medical services throughout Southern Oregon and Northern California. The MD and Chief Executive Officer oversees the integration of clinical best practices with the operational demands of facilities like Asante Rogue Regional Medical Center and Asante Three Rivers Medical Center. Larry Whyte's focus includes enhancing the quality of care, driving clinical innovation, and ensuring the organization's not-for-profit status aligns with community health needs. Whyte's executive decisions directly impact patient outcomes and the overall efficiency of Asante's nine-county service area.

    Heather Rowenhorst - Senior Vice President & Chief Financial Officer

    Heather Rowenhorst, the Senior Vice President & Chief Financial Officer at Asante, directs the financial strategy and fiscal operations for the not-for-profit healthcare organization. Rowenhorst's executive leadership is essential for ensuring the financial sustainability and responsible management of Asante's resources across its nine-county service area. This includes overseeing budgeting, financial planning, revenue cycle management, and investment strategies for facilities like Asante Rogue Regional Medical Center. Heather Rowenhorst's responsibilities encompass maintaining strong financial controls, optimizing financial performance, and ensuring compliance with all relevant healthcare financial regulations. The Senior Vice President & Chief Financial Officer plays a critical role in supporting Asante's mission by allocating resources effectively to enhance patient care and expand services throughout Southern Oregon and Northern California. Rowenhorst's financial acumen is vital for long-term organizational health.

    Daniel Moline - Medical Director & Chief of Staff

    Daniel Moline, the Medical Director & Chief of Staff at Asante, provides essential clinical leadership and operational oversight for medical staff activities. Moline's role ensures the highest standards of patient care are maintained across Asante's facilities, including Asante Rogue Regional Medical Center and Asante Three Rivers Medical Center. This executive function involves collaborating with hospital administration to align clinical protocols with the organization's broader strategic goals. Daniel Moline's responsibilities include advocating for physician needs, managing medical staff credentialing, and fostering a culture of continuous improvement in clinical services. The Medical Director & Chief of Staff plays a crucial part in translating the organization's mission into tangible patient care experiences throughout Southern Oregon and Northern California. Moline's expertise bridges clinical practice and administrative management, vital for a comprehensive healthcare system.

    Margaret Luna - Senior Vice President Chief Human Resources Officer

    Margaret Luna, the Senior Vice President Chief Human Resources Officer at Asante, directs all human capital strategies and initiatives for the not-for-profit healthcare organization. Luna's executive purview encompasses talent acquisition, employee relations, compensation and benefits, and organizational development across Asante's extensive network in Southern Oregon and Northern California. This critical role ensures that Asante attracts, retains, and develops a skilled workforce capable of delivering comprehensive medical care. Margaret Luna's leadership is instrumental in fostering a positive and productive work environment that supports the organization's mission and values. The Senior Vice President Chief Human Resources Officer collaborates closely with other executive leaders to align HR strategies with Asante's operational and strategic objectives, including those at Asante Rogue Regional Medical Center and Asante Three Rivers Medical Center. Luna's expertise is vital for managing a large healthcare workforce effectively.

    Jonathan Gell - Medical Director & Chief of Staff

    Jonathan Gell, the Medical Director & Chief of Staff at Asante, leads the medical staff in upholding clinical excellence and operational efficiency across the healthcare system. Gell's executive responsibilities involve ensuring adherence to the highest standards of patient care and safety throughout Asante's nine-county service area. This role requires close collaboration with hospital leadership to implement effective medical policies and procedures at facilities such as Asante Rogue Regional Medical Center. Jonathan Gell's focus includes physician engagement, quality improvement initiatives, and the strategic development of clinical services to meet community needs in Southern Oregon and Northern California. The Medical Director & Chief of Staff acts as a key liaison between the medical community and the organization's administrative functions, driving clinical strategy and operational alignment. Gell's leadership ensures the medical team is well-supported and aligned with Asante's mission.

    David Kinyon - Senior Vice President and Chief Information Officer

    David Kinyon, the Senior Vice President and Chief Information Officer at Asante, architects and oversees the organization's entire information technology infrastructure and digital strategy. Kinyon's executive leadership is crucial for implementing and managing advanced technological solutions that support comprehensive medical care delivery across Southern Oregon and Northern California. This includes ensuring the security, reliability, and interoperability of electronic health records, data management systems, and communication networks for all Asante facilities. David Kinyon's responsibilities extend to driving digital transformation initiatives that enhance patient engagement, streamline clinical workflows, and improve operational efficiency. The Senior Vice President and Chief Information Officer plays a pivotal role in leveraging technology to advance Asante's mission and maintain its competitive edge in the healthcare sector. Kinyon's strategic vision ensures Asante remains at the forefront of health IT innovation.

    Jamie Grebosky - Chief Medical Officer

    Jamie Grebosky, the Chief Medical Officer at Asante, provides essential clinical leadership and strategic direction for medical affairs across the organization. Grebosky's executive role focuses on ensuring the highest quality of patient care and clinical outcomes throughout Asante's extensive network in Southern Oregon and Northern California. This involves overseeing medical staff performance, implementing evidence-based practices, and driving initiatives that enhance patient safety and satisfaction. Jamie Grebosky collaborates closely with hospital administrators and department heads to align clinical operations with Asante's overarching mission and strategic goals. The Chief Medical Officer is instrumental in fostering a culture of medical excellence and continuous improvement within all Asante facilities, including Asante Rogue Regional Medical Center. Grebosky's clinical expertise guides the organization's approach to healthcare delivery and innovation.

    Wilson Wizimane - Chief Operations Officer

    Wilson Wizimane, the Chief Operations Officer at Asante, directs the day-to-day operational efficiency and strategic execution across the healthcare system's facilities. Wizimane's executive leadership is critical for optimizing resource allocation, streamlining workflows, and ensuring the seamless delivery of comprehensive medical care throughout Southern Oregon and Northern California. This role involves overseeing the operational integration of Asante Ashland Community Hospital, Asante Physician Partners, Asante Rogue Regional Medical Center, and Asante Three Rivers Medical Center. Wilson Wizimane's responsibilities include implementing operational improvements, managing facility services, and ensuring adherence to regulatory standards. The Chief Operations Officer plays a vital part in translating Asante's mission into effective, high-quality patient care experiences by enhancing operational performance and driving strategic initiatives. Wizimane's focus is on maximizing efficiency and effectiveness across all operational domains.

    Explore Leadership Teams in Hospitals & Physicians Clinics

    Frequently Asked Questions Regarding Asante Top Executives and Leadership Team

    Who leads Asante?
    Asante is led by Michael Zdeblick (Chief Executive Officer), along with executives such as Thomas Gessel (President & Chief Executive Officer) and Larry Whyte (MD and Chief Executive Officer).
    Who is part of Asante’s executive team?
    The executive team of Asante includes leaders such as Michael Zdeblick (Chief Executive Officer), Thomas Gessel (President & Chief Executive Officer), Larry Whyte (MD and Chief Executive Officer) and other senior executives.
    How many executives does Asante have?
    Asante has 10 executives leading key business areas.
    What roles are included in Asante’s leadership team?
    The leadership team of Asante includes roles such as Chief Executive Officer, President & Chief Executive Officer, MD and Chief Executive Officer, Senior Vice President & Chief Financial Officer, Medical Director & Chief of Staff.