John Muir Health Executive and Leadership Team

Richard Chang, the President & Chief Executive Officer at John Muir Health, directs the overarching strategic vision for the entire health care organization. Overseeing the expansion of high-risk obstetrics and neurosciences, the President & Chief Executive Officer ensures that clinical excellence remains the primary focus across all regional facilities. This leadership role involves constant collaboration with the Board to align long-term growth with the evolving needs of the California patient population. By prioritizing advanced robotic surgery and trauma care, Richard Chang drives the organization toward superior medical outcomes. The President & Chief Executive Officer maintains rigorous standards for quality, ensuring that every department functions with maximum efficiency. Through this dedicated approach, the organization secures its position as a leader in complex medical services, consistently delivering high-value care to the communities served.

Joseph Horton, the President & Chief Executive Officer at John Muir Health, manages the operational infrastructure supporting cardiac and cancer care programs. Focusing on the integration of specialized surgical services, the President & Chief Executive Officer optimizes resource allocation to enhance patient access to life-saving treatments. This role requires deep engagement with clinical department heads to streamline workflows in orthopedics and general surgery. By fostering a culture of continuous improvement, Joseph Horton elevates the standard of care provided throughout the network. The President & Chief Executive Officer monitors performance metrics to ensure that every facility meets the highest benchmarks for safety and efficacy. Through strategic oversight of these critical service lines, the President & Chief Executive Officer strengthens the organization's reputation for clinical excellence and operational reliability within the competitive health care landscape.

Grace Caliendo, the President & Chief Executive Officer at John Muir Health, leads the development of advanced endoscopic and weight-loss surgery initiatives. By architecting partnerships with medical specialists, the President & Chief Executive Officer expands the reach of specialized surgical programs across the regional footprint. This leadership position involves evaluating new medical technologies to ensure the organization remains at the forefront of surgical innovation. Grace Caliendo coordinates with administrative teams to refine patient care pathways, ensuring seamless transitions from diagnosis to recovery. The President & Chief Executive Officer drives initiatives that improve patient satisfaction and clinical outcomes in high-acuity settings. Through meticulous planning and execution, the President & Chief Executive Officer ensures that the organization maintains its commitment to providing comprehensive, high-quality health care services to the diverse population of California.

Ravi Hundal, the Chief Financial Officer & Executive VP, Clinical Integration & Population Health at John Muir Health, directs the financial strategy and population health initiatives. Overseeing the fiscal health of the organization, the Chief Financial Officer & Executive VP, Clinical Integration & Population Health ensures that investments in cancer care and neurosciences align with long-term sustainability goals. This role involves integrating clinical services to improve health outcomes for the broader population. Ravi Hundal manages capital allocation to support the expansion of advanced surgical technologies. By analyzing financial data and clinical performance, the Chief Financial Officer & Executive VP, Clinical Integration & Population Health identifies opportunities for cost-effective care delivery. The Chief Financial Officer & Executive VP, Clinical Integration & Population Health collaborates with the leadership team to ensure that financial resources support the organization's commitment to excellence in patient care.

Tanya Threewitt, the Chief Operating Officer at John Muir Health, manages the daily operational functions of the hospital network. Overseeing the logistics of trauma surgery and general surgery departments, the Chief Operating Officer ensures that resources are deployed effectively to meet patient demand. This role involves streamlining administrative processes to reduce wait times and improve the overall flow of care. Tanya Threewitt coordinates with clinical leadership to maintain high standards in orthopedics and cardiac care units. By optimizing supply chain management and facility utilization, the Chief Operating Officer drives significant improvements in operational efficiency. The Chief Operating Officer monitors performance across all campuses to ensure consistent service delivery. Through this focus on operational excellence, the Chief Operating Officer supports the organization's mission to provide comprehensive, high-quality health care services to the community.

Michael Baker, the President at John Muir Health, directs the strategic growth and development of specific service lines within the organization. Overseeing the expansion of weight-loss surgery and other specialized programs, the President ensures that these services meet the growing needs of the community. This role involves identifying new market opportunities and building relationships with key stakeholders to support the organization's mission. Michael Baker coordinates with other executives to ensure that the growth of these service lines aligns with the overall strategic plan. By focusing on operational excellence and patient-centered care, the President drives the success of these specialized departments. The President monitors the performance of these programs to ensure they contribute positively to the organization's reputation and financial health. Through this leadership, Michael Baker strengthens the organization's ability to provide comprehensive and innovative health care services.

Sanjib Dutt, the Chief Information Officer at John Muir Health, directs the digital transformation of the entire health care network. Overseeing the implementation of secure electronic health records and advanced data analytics, the Chief Information Officer ensures that clinical teams possess the tools necessary for precise patient care. This role involves protecting sensitive medical information while facilitating seamless communication between departments. Sanjib Dutt architects scalable technology solutions that support complex services like neurosurgery and cardiac care. By optimizing the digital infrastructure, the Chief Information Officer improves operational efficiency and supports data-driven decision-making across the organization. The Chief Information Officer collaborates with other executives to integrate new software platforms that enhance the patient experience. Through this technical leadership, the Chief Information Officer secures the organization's digital future and supports the delivery of high-quality medical services.

Irving Pike, the Senior Vice President and Chief Marketing Officer at John Muir Health, directs the brand strategy and community outreach efforts. Overseeing the communication of the organization's expertise in neurosurgery and orthopedics, the Senior Vice President and Chief Marketing Officer ensures that the public understands the value of the services provided. This role involves developing campaigns that highlight the commitment to high-risk obstetrics and cardiac care. Irving Pike manages the reputation of the organization across the California market. By leveraging data-driven insights, the Senior Vice President and Chief Marketing Officer crafts messaging that resonates with patients and referring physicians. The Senior Vice President and Chief Marketing Officer collaborates with clinical leaders to showcase the latest advancements in robotic surgery. Through this strategic marketing approach, the Senior Vice President and Chief Marketing Officer strengthens the organization's market position and community trust.

Sunil Gandhi, the Chief of Staff, Walnut Creek Campus at John Muir Health, directs the administrative and clinical coordination at the primary facility. Overseeing the daily operations of the Walnut Creek campus, the Chief of Staff, Walnut Creek Campus ensures that all departments, including trauma surgery and general surgery, function in harmony. This role involves facilitating communication between medical staff and executive leadership to resolve operational challenges. Sunil Gandhi monitors the quality of care provided to patients, ensuring that the campus meets the highest standards of the organization. By fostering a collaborative environment, the Chief of Staff, Walnut Creek Campus supports the professional development of the medical team. The Chief of Staff, Walnut Creek Campus plays a vital role in maintaining the operational excellence of the flagship location, directly impacting the overall success of the health care organization.

Russell Rodriguez, the Senior Vice President and Chief Medical Officer (Chief Marketing Officer) at John Muir Health, directs the clinical quality and medical standards across the network. Overseeing the performance of the surgical teams, the Senior Vice President and Chief Medical Officer (Chief Marketing Officer) ensures that all procedures, including advanced endoscopic and robotic surgery, adhere to evidence-based protocols. This role involves mentoring medical staff and promoting a culture of safety and excellence. Russell Rodriguez collaborates with the marketing team to communicate the clinical achievements of the organization to the public. By bridging the gap between medical practice and public perception, the Senior Vice President and Chief Medical Officer (Chief Marketing Officer) enhances the reputation of the health care services. The Senior Vice President and Chief Medical Officer (Chief Marketing Officer) drives initiatives that improve patient outcomes and maintain the organization's status as a leader in medical care.