Phoenix Children's Executive and Leadership Team

August, 2026

Leadership Overview

Phoenix Children's has 10 executives leading key functions including strategy, clinical operations, medical staff governance, and information technology.

Committed to advancing pediatric healthcare excellence, Phoenix Children's delivers comprehensive specialty services across inpatient, outpatient, and emergency settings to improve health outcomes for children throughout the region.

Leadership Roles at Phoenix Children's

  • President & Chief Executive Officer - John Nickens
  • Executive Vice President & Chief Operating Officer - Justin Bradshaw
  • Group Chief Operating Officer, Children's Medical (Phoenix) - Jared Muenzer
  • Residency House Staff President - Julia DeCelles-Zwerneman
  • President, Department of Medical Staff - Dustin Rayhorn
  • President - Doug Hobbs
  • Senior Vice President and Chief Information Officer - Brian Meyer
  • Chief Medical Officer - Blake Bulloch
  • Senior VP, Chief Strategy Officer - Stephanie Kearney
  • Do - Alana Horais
  • John Nickens - President & Chief Executive Officer

    John Nickens, the President & Chief Executive Officer at Phoenix Children's, directs the overarching strategic vision for this freestanding pediatric facility. Overseeing the entire hospital network, the President & Chief Executive Officer ensures alignment between clinical excellence and long-term institutional growth. This leadership role involves managing complex relationships with the Board and external stakeholders to secure the financial and operational future of the organization. By prioritizing high-quality patient care, John Nickens drives the expansion of specialty services across the Southwest. The President & Chief Executive Officer maintains a focus on innovation within inpatient and outpatient care models, ensuring that the hospital remains a leader in pediatric medicine. Through rigorous oversight of all departments, Nickens fosters a culture of safety and clinical advancement, ultimately strengthening the market position of the hospital within the competitive healthcare landscape.
    John Nickens

    Justin Bradshaw - Executive Vice President & Chief Operating Officer

    Justin Bradshaw, the Executive Vice President & Chief Operating Officer at Phoenix Children's, manages the daily operational efficiency of the hospital system. Overseeing the integration of inpatient, outpatient, and emergency services, the Executive Vice President & Chief Operating Officer optimizes resource allocation to support high-volume pediatric care. This role involves streamlining administrative workflows and clinical support systems to enhance the patient experience. By driving operational excellence across the organization, Justin Bradshaw ensures that the hospital meets the complex demands of trauma and urgent care delivery. The Executive Vice President & Chief Operating Officer collaborates with other C-suite leaders to implement scalable infrastructure that supports regional growth. Through meticulous management of hospital assets and personnel, Bradshaw secures the operational stability required to maintain the highest standards of pediatric medical service delivery.
    Justin Bradshaw

    Jared Muenzer - Group Chief Operating Officer, Children's Medical (Phoenix)

    Jared Muenzer, the Group Chief Operating Officer, Children's Medical (Phoenix) at Phoenix Children's, architects the operational framework for specialized medical services within the Phoenix metropolitan area. Overseeing the clinical delivery teams, the Group Chief Operating Officer, Children's Medical (Phoenix) ensures that pediatric specialty care remains accessible and efficient. This leadership role involves coordinating with medical staff to refine care pathways and improve patient throughput in high-acuity departments. By focusing on the specific needs of the local patient population, Jared Muenzer drives initiatives that enhance the quality of trauma and urgent care services. The Group Chief Operating Officer, Children's Medical (Phoenix) works closely with clinical leadership to align operational goals with the broader mission of the hospital. Through strategic management of medical resources, Muenzer supports the delivery of world-class pediatric care across the entire regional network.

    Julia DeCelles-Zwerneman - Residency House Staff President

    Julia DeCelles-Zwerneman, the Residency House Staff President at Phoenix Children's, represents the interests of the medical training cohort within the hospital. Overseeing the communication between residents and hospital administration, the Residency House Staff President ensures that educational and clinical needs are met during the training process. This role involves advocating for resources that support the professional growth of the next generation of pediatric specialists. By driving engagement within the residency programs, Julia DeCelles-Zwerneman contributes to the overall academic and clinical environment of the institution. The Residency House Staff President collaborates with department heads to refine training protocols and improve the quality of care provided by the house staff. Through active leadership, DeCelles-Zwerneman ensures that the hospital continues to attract and develop top-tier medical talent, supporting the long-term mission of pediatric excellence.

    Dustin Rayhorn - President, Department of Medical Staff

    Dustin Rayhorn, the President, Department of Medical Staff at Phoenix Children's, leads the governance and professional standards for the hospital's medical practitioners. Overseeing the credentialing and peer review processes, the President, Department of Medical Staff ensures that all physicians maintain the highest levels of clinical competence. This role involves facilitating communication between the medical staff and the hospital administration to ensure operational alignment. By driving initiatives that promote physician well-being and professional development, Dustin Rayhorn supports the delivery of high-quality pediatric care. The President, Department of Medical Staff works to foster a culture of collaboration and accountability across all specialty departments. Through the effective management of medical staff affairs, Rayhorn ensures that the hospital maintains a strong, cohesive team capable of addressing the diverse and complex needs of pediatric patients.

    Doug Hobbs - President

    Doug Hobbs, the President at Phoenix Children's, directs specific organizational units to ensure the seamless delivery of pediatric specialty services. Overseeing the strategic execution of departmental goals, the President ensures that resources are effectively utilized to support inpatient and outpatient care. This leadership role involves coordinating with cross-functional teams to optimize service delivery and improve patient outcomes. By driving operational improvements, Doug Hobbs supports the hospital's mission to provide comprehensive care to the pediatric population. The President works closely with other executive leaders to align departmental activities with the broader institutional strategy. Through the focused management of key operational areas, Hobbs ensures that the hospital maintains its position as a leader in pediatric healthcare, consistently delivering high-quality services to the community.

    Brian Meyer - Senior Vice President and Chief Information Officer

    Brian Meyer, the Senior Vice President and Chief Information Officer at Phoenix Children's, directs the digital transformation and technological infrastructure of the hospital. Overseeing the implementation of advanced health information systems, the Senior Vice President and Chief Information Officer ensures data security and interoperability across all clinical departments. This role involves managing the complex IT landscape that supports inpatient, outpatient, and emergency care delivery. By architecting scalable cloud and data solutions, Brian Meyer drives the integration of digital tools that improve diagnostic accuracy and patient monitoring. The Senior Vice President and Chief Information Officer collaborates with clinical leaders to leverage data analytics for better health outcomes. Through the strategic deployment of technology, Meyer ensures that the hospital maintains a robust digital foundation, supporting the overall mission of providing superior pediatric healthcare services throughout the region.
    Brian Meyer

    Blake Bulloch - Chief Medical Officer

    Blake Bulloch, the Chief Medical Officer at Phoenix Children's, oversees the clinical standards and medical staff performance across the entire hospital system. Directing the quality of care initiatives, the Chief Medical Officer ensures that all pediatric specialty services adhere to rigorous safety and efficacy protocols. This leadership role involves managing the professional development of medical staff and fostering a collaborative environment for clinical research and practice. By driving improvements in trauma and urgent care outcomes, Blake Bulloch ensures that the hospital remains at the forefront of pediatric medicine. The Chief Medical Officer works in tandem with executive leadership to align clinical strategy with the long-term goals of the organization. Through constant evaluation of medical practices, Bulloch maintains the high clinical reputation of the hospital, ensuring that every patient receives the most advanced care available.
    Blake Bulloch

    Stephanie Kearney - Senior VP, Chief Strategy Officer

    Stephanie Kearney, the Senior VP, Chief Strategy Officer at Phoenix Children's, architects the long-term growth and market positioning of the hospital. Overseeing the development of strategic partnerships and service expansion, the Senior VP, Chief Strategy Officer ensures that the organization remains competitive in the pediatric healthcare market. This role involves analyzing market trends and identifying opportunities for growth in inpatient, outpatient, and trauma care services. By driving strategic initiatives that align with the hospital's mission, Stephanie Kearney ensures that the institution continues to meet the evolving needs of the pediatric population. The Senior VP, Chief Strategy Officer collaborates with the executive team to secure the resources necessary for future development. Through the implementation of forward-thinking strategies, Kearney strengthens the hospital's regional impact and ensures long-term sustainability.
    Stephanie Kearney

    Alana Horais - Do

    Alana Horais, the Do at Phoenix Children's, manages specific clinical functions and medical oversight within the pediatric specialty departments. Overseeing the daily operations of medical teams, the Do ensures that patient care protocols are executed with precision and compassion. This leadership role involves coordinating with other medical professionals to maintain high standards in inpatient and outpatient settings. By driving clinical efficiency, Alana Horais supports the broader mission of the hospital to provide comprehensive pediatric services. The Do works to integrate evidence-based practices into the daily workflow, ensuring that the medical staff remains aligned with the latest advancements in pediatric healthcare. Through the diligent management of clinical resources, Horais contributes to the overall success of the hospital, ensuring that the facility continues to meet the complex health needs of the pediatric population.

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    Frequently Asked Questions Regarding Phoenix Children's Top Executives and Leadership Team

    Who leads Phoenix Children's?
    Phoenix Children's is led by John Nickens (President & Chief Executive Officer), along with executives such as Justin Bradshaw (Executive Vice President & Chief Operating Officer) and Jared Muenzer (Group Chief Operating Officer, Children's Medical (Phoenix)).
    Who is part of Phoenix Children's’s executive team?
    The executive team of Phoenix Children's includes leaders such as John Nickens (President & Chief Executive Officer), Justin Bradshaw (Executive Vice President & Chief Operating Officer), Jared Muenzer (Group Chief Operating Officer, Children's Medical (Phoenix)) and other senior executives.
    How many executives does Phoenix Children's have?
    Phoenix Children's has 10 executives leading key business areas.
    What roles are included in Phoenix Children's’s leadership team?
    The leadership team of Phoenix Children's includes roles such as President & Chief Executive Officer, Executive Vice President & Chief Operating Officer, Group Chief Operating Officer, Children's Medical (Phoenix), Residency House Staff President, President, Department of Medical Staff.