Executive Team

As President and Chief Executive Officer of Community Memorial Healthcare, Mick Zdeblick leads the organization's vision, strategy, and operations in service of its mission to provide exceptional healthcare to the communities of Ventura County. He is committed to fostering a culture of collaboration, innovation, and accountability, bringing together physicians, employees, volunteers, and community partners to strengthen Community Memorial's impact and ensure its long-term success.

Known for his approachable leadership style and commitment to open communication, Mick believes the strongest healthcare organizations are built on trust, engagement, and a shared sense of purpose. He works closely with teams across the health system to advance strategic priorities, enhance the patient experience, support workforce development, and drive continuous improvement in quality and safety, including Community Memorial's focus on achieving top-decile performance in reducing hospital-acquired infections.

Prior to joining Community Memorial Healthcare, Mick served as Chief Executive Officer of Asante Rogue Regional Medical Center, the flagship hospital for the Asante Health System. During his tenure, he helped lead a major facility renovation and expansion initiative while maintaining organizational performance through the unprecedented challenges of the COVID-19 pandemic. Earlier in his career, he held senior leadership positions at El Camino Hospital and Rush University Medical Center, where he helped oversee significant operational, strategic, and campus transformation initiatives.

Mick earned a Bachelor of Business Administration from Marquette University and a Master of Management from Northwestern University's Kellogg School of Management. He is passionate about creating healthcare organizations where people feel empowered to contribute, grow, and make a meaningful difference in the lives of others.

​As Chief Financial Officer and Senior Vice President of Finance for Community Memorial Healthcare, Jim Corwin provides strategic leadership for the organization's financial operations and long-term fiscal stewardship. He oversees finance, revenue cycle, health information management, utilization review and case management, and materials management, helping ensure Community Memorial remains well-positioned to invest in its people, services, facilities, and future growth.

Jim brings a practical and mission-driven approach to financial leadership, recognizing that strong financial performance enables Community Memorial to fulfill its commitment to exceptional patient care and community service. He works closely with leaders across the health system to support strategic decision-making, operational excellence, and long-term sustainability while helping position the organization for future opportunities and growth.

With a healthcare career spanning more than three decades, including service as a Chief Financial Officer since 1997, Jim has held senior financial leadership roles across both nonprofit and for-profit healthcare organizations. Prior to joining Community Memorial in 2020, he served as State Chief Financial Officer for Providence’s Physician Division throughout California and prior to that held CFO positions with Tenet Healthcare, overseeing hospitals in Los Angeles and Riverside Counties. Throughout his career, he has developed expertise in mergers and acquisitions, physician enterprise operations, financial strategy, and organizational growth transformation.

Jim earned his degree from the University of Southern California's School of Business. Throughout his career, he has been recognized for his leadership and contributions to healthcare finance, including honors from the San Fernando Valley Business Journal (2010), Los Angeles Business Journal (2012), and Pacific Coast Business Times (2021 & 2022). He also served for four years on the Gold Coast Health Plan Board of Directors. A lifelong musician, Jim remains actively involved in the music community and previously served on the Board of the Songwriters Hall of Fame from 2007 to 2017.

​ ​​​As Hospital Chief Financial Officer at Community Memorial, Tyler Woolsey plays a key role in managing financial operations and helping position the health system to achieve its strategic objectives. He works closely with leaders across the organization to translate complex financial data into actionable insights that support operational excellence, informed decision-making, and long-term sustainability.

Tyler brings a collaborative and analytical approach to healthcare finance, helping align financial performance with organizational priorities and growth opportunities. His work supports Community Memorial's ability to invest in its people, facilities, services, and commitment to providing exceptional care to the communities it serves.

With more than 15 years of experience in healthcare finance and analytics, Tyler has developed expertise in financial operations, healthcare economics, and performance improvement. Prior to joining Community Memorial, he spent nearly a decade with Providence St. Joseph Health, last serving as CFO, Financial Operations for their Ambulatory Division (Providence Clinical Network).

Tyler earned a Bachelor of Science degree from Sonoma State University and a Master of Healthcare Administration with a focus on finance and operations from the University of Southern California. He also holds the Certified Healthcare Financial Professional (CHFP) designation through the Healthcare Financial Management Association (HFMA) as well as advanced certifications in Lean Six Sigma and Revenue Cycle Management.

​As the Designated Institutional Official for Community Memorial Healthcare, Dr. Deborah “Debby” Carlson provides executive leadership for the organization's Graduate Medical Education programs, helping shape the next generation of physicians. Driven by a passion for physician education, patient satisfaction, and continuous learning, she is committed to creating an environment where residents, faculty, and learners can thrive while advancing exceptional patient care.

Dr. Carlson works closely with physicians, educators, residents, and organizational leaders to strengthen medical education and support the continued growth of Community Memorial's Graduate Medical Education programs. She believes in leading by example and empowering residents to take ownership of their patients and their education, helping prepare future physicians for successful and independent practice.

With a career spanning more than 25 years in internal medicine, Dr. Carlson served as Program Director of Community Memorial's Internal Medicine Residency Program from 2013 to 2023. During her tenure, she helped build the program from the ground up and guided its successful growth, training many physicians who now practice throughout the community. As Designated Institutional Official, she is especially proud of advancing transparency and accountability across Graduate Medical Education, strengthening collaboration among Program Directors through regular leadership retreats, expanding point-of-care ultrasound (POCUS) training, and supporting resident retention within the community.

A Southern California native, Dr. Carlson graduated from Tufts University and the University of Southern California Keck School of Medicine. She remains board-certified in internal medicine and continues her clinical work as a hospitalist.

As Chief Nursing Officer and Vice President of Patient Care Services for Community Memorial Healthcare, Diane Drexler provides executive leadership for nursing practice, patient care, and clinical operations across the health system. Guided by a patient-first philosophy, she believes nursing leadership plays a vital role in advocating for both patients and staff while creating an environment where clinical teams are empowered to deliver their very best every day.

Diane partners with physicians, nurses, and clinical leaders throughout the organization to advance quality, patient safety, workforce development, and the overall patient experience. Her leadership has helped guide Community Memorial through periods of growth and change, including the challenges of the COVID-19 pandemic, while maintaining a steadfast commitment to clinical excellence and compassionate care. She is especially proud of the organization's pandemic response and its efforts to strengthen workforce development through partnerships with local academic institutions.

With more than three decades of healthcare leadership experience, Diane has held executive nursing roles in California and Arizona, including positions at Yavapai Regional Medical Center, Cancer Treatment Centers of America, and Banner Estrella Medical Center. Throughout her career, she has championed nursing excellence, implemented innovative care models, strengthened workforce engagement, and led initiatives designed to improve quality, patient outcomes, and operational performance. At Community Memorial, her work has contributed to sustained reductions in traveler and outside agency utilization, reductions in healthcare-associated infections, and improved patient throughput.

Diane earned a Bachelor of Science in Nursing from the University of New Mexico and both a Doctor of Nursing Practice and Master of Business Administration from Arizona State University. She is a Fellow of the American College of Healthcare Executives and a Robert Wood Johnson Executive Nurse Fellow alumna.

As Chief Administrative Officer of Community Memorial Hospital – Ojai and Vice President, Community Memorial Healthcare, Haady Lashkari provides leadership for hospital operations, strategic growth, and community engagement across the Ojai Valley. Guided by a deep sense of service, integrity, and respect for others, he believes strong relationships and collaboration are essential to serving patients, employees, physicians, and the community well.

A Ventura County native, Haady is passionate about ensuring local access to high-quality healthcare while maintaining the strong community connections that define Community Memorial. He is excited about the opportunity to help shape the future of healthcare by expanding access, embracing new models of care, and strengthening the relationships and trust that remain at the heart of community-based healthcare.

Haady's career at Community Memorial spans more than two decades. He joined the organization in 2001 as an Administrative Intern and advanced through progressively senior leadership roles before being named Chief Administrative Officer of Community Memorial Hospital – Ojai in 2011. Throughout his tenure, he has played an integral role in the expansion of Community Memorial's ambulatory health centers, the licensing and opening of the Ocean Tower, and the development of the Continuing Care Center, helping strengthen access to care across the region.

In addition to his leadership responsibilities at Ojai Hospital, Haady supports strategic ambulatory growth initiatives throughout the organization. He remains actively involved in the community through the Rotary Club of Ojai and previously served on the Rotary Club of Ojai Education Foundation and the Monica Ros School Board of Trustees, including two years as Board President.

Haady is a Fellow of the American College of Healthcare Executives. He earned bachelor's degrees in Sociology and Communications from the University of California, Santa Barbara, and a Master of Public Administration from California State University, Northridge.

As Chief Marketing & Development Officer for Community Memorial Healthcare, Jamie Maites leads the organization's marketing, communications, philanthropy, and community engagement strategy. She works to strengthen Community Memorial's reputation, advance strategic growth initiatives, inspire philanthropy, and deepen relationships with patients, physicians, donors, employees, and community partners.

Jamie's work helps connect Community Memorial's priorities with the needs of the communities it serves, shaping initiatives that build trust, support long-term sustainability, and strengthen engagement across the organization. She also provides executive sponsorship for several mission-driven programs and advisory groups that advance community health, volunteer engagement, philanthropic support, and the patient and family experience.

Prior to joining Community Memorial in 2022, Jamie served as Vice President of Marketing & Communications at MarinHealth, an independent healthcare system comprised of a community hospital, outpatient clinics, and an affiliated foundation. During her tenure, she led a comprehensive brand transformation that unified the hospital, medical network, and foundation under a single enterprise identity. She also helped lead the successful passage of a $394 million bond initiative and supported the communications and community engagement efforts surrounding the opening of MarinHealth's new hospital facility.

Earlier in her career, Jamie held progressive marketing and communications leadership roles at El Camino Hospital. She brings more than 20 years of healthcare leadership experience and is passionate about strengthening nonprofit healthcare organizations through strategic communications, philanthropy, and community engagement. Jamie earned a Bachelor of Arts in Business Management Economics from the University of California, Santa Cruz, and also studied at the University of Melbourne through the University of California Education Abroad Program.

As Chief Human Resources Officer for Community Memorial Healthcare, Kari McPherson leads the organization's people and culture strategy with a simple belief: when employees feel valued, supported, and connected, they are better able to provide exceptional care to others.

She is responsible for workforce strategy, employee engagement, talent development, and creating an environment where individuals and teams can thrive.

Throughout her career, Kari has championed a culture that prioritizes trust, collaboration, and professional growth. She collaborates with leaders across the organization to strengthen employee experiences, support workforce development, and ensure Community Memorial remains an employer of choice in the communities it serves. Among her accomplishments, Kari led the launch of Community Memorial's employee wellness strategy, helping promote resilience, wellbeing, and burnout prevention across the workforce.

Kari's connection to Community Memorial runs deep. She joined Community Memorial Healthcare in 2008 and has grown her career alongside the organization, progressing through increasingly senior Human Resources leadership roles before becoming Chief Human Resources Officer. Her own experience advancing within Community Memorial reinforces her commitment to creating opportunities for employees to develop, grow, and build meaningful careers within the organization.

For Kari, Human Resources is ultimately about people. A relationship-driven leader, she believes that listening to employees, supporting their wellbeing, and creating meaningful opportunities for growth are essential to both an exceptional employee experience and exceptional patient care.

Kari brings more than 25 years of Human Resources experience to her role. A certified Human Resources Manager, she holds a Bachelor of Science in Business Administration from the University of Phoenix.

As Chief Information Officer, Keith MCWilliams is responsible for all health information technology at Community Memorial Healthcare. He spearheads the ongoing development of an innovative, robust, and secure information technology environment to enhance the care and experience of our patients.

Keith has 15 years of health information technology experience. He began his career at Community Memorial Healthcare as a Night Shift Computer Operator and has worked nearly every position in the Information Systems department over his tenure.

Keith holds a dual bachelor’s degree in Business Management & Psychology from Rensselaer Polytechnic Institute, an MBA from Frostburg State University, and Project Management Professional certification from the Project Management Institute.

Dr. Iwanczyk completed his residency in internal medicine at the UCLA San Fernando Valley Program, and then a fellowship in geriatric medicine at UCLA. He has worked as a hospitalist and geriatrician primarily at Community Memorial Healthcare since 2004. He was the Chief Hospitalist of the inpatient program for 8 years. His interest in Information Technology manifested in work with the Community Memorial IT department on various projects and he spearheaded the build and maintenance of the CPOE system. His interests include improving provider experience with computerized medical records. He enjoys surfing and lives with his wife, son, and two dogs in Somis.

As Chief Administrative Officer & Vice President of Ambulatory Medicine for Community Memorial Healthcare, Kristine Supple provides executive leadership for ambulatory operations, population health initiatives, and strategies that improve access to care across the communities Community Memorial serves. She is committed to advancing innovative care models that enhance patient outcomes, improve care coordination, and support an exceptional patient experience.

Kristine's leadership philosophy is grounded in service, transparency, collaboration, and innovation. She believes the best solutions emerge when physicians, clinicians, operational leaders, and frontline teams work together toward a shared purpose. Focused on continuous improvement, she works to create an environment where people feel empowered to bring forward ideas, challenge traditional thinking, and improve outcomes for patients and the community.

Since joining Community Memorial, Kristine has helped position Ambulatory Medicine as a strategic growth engine for the health system. She has supported the expansion of access to care, strengthened physician partnerships, advanced population health capabilities, and helped develop a long-term vision for ambulatory medicine that aligns clinical excellence with community needs. She is particularly proud of the work underway to expand Community Memorial's ambulatory footprint, accelerate digital transformation, and build innovative models that support the future of value-based care.

With more than 30 years of healthcare experience, Kristine brings a distinctive combination of clinical expertise and executive leadership to her role. Her background includes direct patient care, population health, service line strategy, and healthcare operations, with a longstanding focus on expanding access to care for underserved populations. She is passionate about helping shape the future of healthcare delivery through innovation, digital health, physician partnerships, and community collaboration. Kristine earned a Master of Public Health with a concentration in healthcare administration from Yale University and a Physician Assistant degree from George Washington University.

Office of the Chief Medical Officer

Lamar Bushnell, MD

As Co-Chief Medical Officer for Community Memorial Healthcare, Dr. Lamar Bushnell provides clinical leadership and strategic direction in support of the organization's mission to deliver exceptional care to the communities it serves. A practicing cardiovascular and thoracic surgeon for more than 30 years, he brings a physician's perspective to leadership and is committed to fostering collaboration among physicians, advanced practice providers, nurses, and healthcare teams.

Dr. Bushnell believes that strong relationships, open communication, and shared accountability are essential to advancing quality patient care. His leadership focuses on supporting clinical teams, strengthening physician engagement, and helping create an environment where caregivers have the resources they need to succeed. He is particularly passionate about building partnerships that improve outcomes while allowing physicians to remain focused on what matters most: their patients.

Throughout his leadership tenure, Dr. Bushnell has helped advance quality and safety initiatives across the health system, including the development of physician-nursing dyad leadership teams, implementation of Balanced Scorecard quality initiatives, and efforts to reduce hospital-acquired infections. Looking ahead, he is excited about Community Memorial's continued investment in innovation and advanced care close to home, including opportunities to expand access to leading-edge technologies, specialty programs, and value-based care that benefits the communities it serves.

A California native, Dr. Bushnell earned a Bachelor of Arts in Biology from the University of Utah, where he also completed graduate work in genetic engineering, medical school, and his general surgery residency. He completed a fellowship in cardiothoracic surgery at the University of Iowa and has served in numerous leadership roles at Community Memorial, including Chair of the Department of Surgery, Chief of the Medical Staff, Board Trustee, and Director of Cardiac Surgery.

Robert Streeter, MD

Dr. Robert Streeter joined the Office of the CMO in November 2024. Dr. Streeter has been practicing Family Medicine for over 30 years. After serving in the United States Air Force, he joined the faculty group of a UC Davis affiliated Family Medicine Residency in Merced, California. He went on to practice in Merced for 23 years. Dr. Streeter transitioned his practice to Ventura County in 2017. He enjoys seeing patients of all ages, with a focus on prevention and management of chronic diseases. Dr. Streeter has been married for nearly 35 years, has two adult children, and recently became a grandparent for the first time.