Alameda Health System Executive and Leadership Team

September, 2026

Leadership Overview

Alameda Health System has 7 executives leading key functions including human resources, technology, administration, medical oversight, and nursing operations.

Committed to public health excellence, Alameda Health System delivers comprehensive medical care and professional training across a robust network of hospitals and community wellness centers throughout California.

Leadership Roles at Alameda Health System

  • Executive Assistant To the Chief Human Resources Officer - Krista Yoshino
  • Vice President & Chief Technology Officer - Michael Capili
  • Chief Administrative Officer - Patricia Espeseth
  • Chief Medical Officer - Stephen Chen
  • Associate Chief Medical Officer - Porshia Mack
  • Chief Administrative Officer (CAO) & Nursing Chief Associate & Officer - Terrance Shaw
  • Chief Administrative Officer, Post-Acute Services - Richard Espinoza
  • Krista Yoshino - Executive Assistant To the Chief Human Resources Officer

    Krista Yoshino, the Executive Assistant To the Chief Human Resources Officer at Alameda Health System, manages complex administrative workflows supporting the human capital strategy. Yoshino coordinates executive communications, optimizes scheduling for the human resources department, and facilitates internal alignment across the nine facilities. By streamlining daily operations, the Executive Assistant To the Chief Human Resources Officer ensures the leadership team maintains focus on workforce development and talent retention initiatives. Krista Yoshino provides critical support for organizational projects, including policy implementation and staff engagement programs. This role requires precise attention to detail while managing sensitive personnel data and high-level correspondence. Through effective coordination, the Executive Assistant To the Chief Human Resources Officer enables the human resources division to execute strategic goals efficiently. Yoshino maintains operational continuity, allowing the department to address the evolving needs of the public health workforce across the entire regional network.

    Michael Capili - Vice President & Chief Technology Officer

    Michael Capili, the Vice President & Chief Technology Officer at Alameda Health System, architects the digital infrastructure supporting clinical and administrative operations. Capili directs the implementation of advanced health information systems, ensuring secure data management across all five hospitals and wellness centers. By modernizing technological frameworks, the Vice President & Chief Technology Officer enhances diagnostic capabilities and patient record accessibility. Michael Capili oversees cybersecurity protocols, protecting sensitive medical information while maintaining system uptime for critical care environments. This leadership role involves collaborating with clinical teams to integrate innovative software solutions that improve patient outcomes. Through strategic investment in digital tools, the Vice President & Chief Technology Officer drives operational efficiency across the entire organization. Capili manages large-scale technology projects, ensuring the health system remains at the forefront of medical innovation while supporting the broader mission of providing accessible, high-quality public health services.
    Michael Capili

    Patricia Espeseth - Chief Administrative Officer

    Patricia Espeseth, the Chief Administrative Officer at Alameda Health System, manages the daily operational functions of the hospital network. Espeseth oversees facility management, supply chain logistics, and administrative policy execution to ensure seamless service delivery. By optimizing resource allocation, the Chief Administrative Officer supports the financial and operational health of the organization. Patricia Espeseth coordinates with department heads to streamline workflows, reducing bottlenecks in patient intake and administrative processing. This leadership role involves maintaining compliance with public health regulations while fostering an environment conducive to medical training and patient care. Through rigorous oversight of operational metrics, the Chief Administrative Officer drives efficiency and cost-effectiveness across the nine facilities. Espeseth ensures that administrative systems align with the broader mission of providing equitable care, ultimately strengthening the infrastructure required to support the diverse medical needs of the community served by the health system.
    Patricia Espeseth

    Stephen Chen - Chief Medical Officer

    Stephen Chen, the Chief Medical Officer at Alameda Health System, directs clinical strategy and medical standards across the entire provider network. Chen oversees physician performance, quality of care initiatives, and patient safety protocols to ensure excellence in medical outcomes. By establishing evidence-based clinical guidelines, the Chief Medical Officer maintains high standards of practice within the five hospitals and wellness centers. Stephen Chen collaborates with the board and executive leadership to align medical services with the public health mission. This role involves managing clinical staff recruitment, professional development, and the integration of medical training programs. Through continuous monitoring of clinical performance data, the Chief Medical Officer drives improvements in patient care quality and operational safety. Chen ensures that the medical staff remains prepared to address complex health challenges, ultimately supporting the organization's commitment to providing high-quality, accessible care to the diverse population throughout the region.

    Porshia Mack - Associate Chief Medical Officer

    Porshia Mack, the Associate Chief Medical Officer at Alameda Health System, focuses on clinical process improvement and patient experience initiatives. Mack manages specific medical departments, ensuring that clinical workflows remain efficient and patient-centered. By analyzing clinical outcomes, the Associate Chief Medical Officer identifies opportunities for service optimization and quality enhancement. Porshia Mack works closely with the Chief Medical Officer to implement standardized care protocols across the network of community-based wellness centers. This leadership role involves mentoring clinical staff and fostering a culture of continuous improvement in medical service delivery. Through targeted interventions, the Associate Chief Medical Officer addresses gaps in care and enhances the overall effectiveness of the health system. Mack supports the organization's mission by ensuring that clinical operations remain responsive to community needs, ultimately contributing to better health outcomes and increased patient satisfaction across the entire regional medical network.

    Terrance Shaw - Chief Administrative Officer (CAO) & Nursing Chief Associate & Officer

    Terrance Shaw, the Chief Administrative Officer (CAO) & Nursing Chief Associate & Officer at Alameda Health System, manages the integration of nursing operations with broader administrative functions. Shaw oversees nursing staff deployment, clinical resource management, and the implementation of nursing excellence standards. By aligning nursing practices with administrative goals, the Chief Administrative Officer (CAO) & Nursing Chief Associate & Officer ensures that patient care teams have the necessary support to deliver high-quality services. Terrance Shaw coordinates with hospital leadership to optimize staffing levels and improve nursing retention across the five hospitals. This role involves developing strategies to enhance the professional environment for nurses while maintaining operational efficiency. Through rigorous oversight of nursing performance metrics, the Chief Administrative Officer (CAO) & Nursing Chief Associate & Officer drives improvements in patient care delivery. Shaw ensures that nursing operations remain central to the organization's mission of providing comprehensive, compassionate public health care.

    Richard Espinoza - Chief Administrative Officer, Post-Acute Services

    Richard Espinoza, the Chief Administrative Officer, Post-Acute Services at Alameda Health System, directs the strategy and operations for long-term care and rehabilitation facilities. Espinoza oversees the transition of patients from acute hospital settings to post-acute care, ensuring continuity of treatment and recovery. By managing the administrative requirements of these specialized facilities, the Chief Administrative Officer, Post-Acute Services optimizes patient throughput and resource utilization. Richard Espinoza coordinates with clinical teams to maintain high standards of care in rehabilitation and long-term support environments. This leadership role involves navigating complex regulatory landscapes and ensuring that post-acute services align with the broader health system mission. Through effective management of these critical services, the Chief Administrative Officer, Post-Acute Services improves long-term patient outcomes and supports the overall efficiency of the health network. Espinoza ensures that post-acute care remains a vital, integrated component of the organization's comprehensive public health strategy.
    Richard Espinoza

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    Frequently Asked Questions Regarding Alameda Health System Top Executives and Leadership Team

    Who leads Alameda Health System?
    Alameda Health System is led by Krista Yoshino (Executive Assistant To the Chief Human Resources Officer), along with executives such as Michael Capili (Vice President & Chief Technology Officer) and Patricia Espeseth (Chief Administrative Officer).
    Who is part of Alameda Health System’s executive team?
    The executive team of Alameda Health System includes leaders such as Krista Yoshino (Executive Assistant To the Chief Human Resources Officer), Michael Capili (Vice President & Chief Technology Officer), Patricia Espeseth (Chief Administrative Officer) and other senior executives.
    How many executives does Alameda Health System have?
    Alameda Health System has 7 executives leading key business areas.
    What roles are included in Alameda Health System’s leadership team?
    The leadership team of Alameda Health System includes roles such as Executive Assistant To the Chief Human Resources Officer, Vice President & Chief Technology Officer, Chief Administrative Officer, Chief Medical Officer, Associate Chief Medical Officer.