Executive Team

Mick Zdeblick

President & CEO

Mick Zdeblick brings an impressive track record of healthcare systems management to his position as President & Chief Executive Officer at Community Memorial Healthcare. Over the course of his career Zdeblick has earned a reputation as a supportive and dynamic leader who is always open to new ideas. He is known for his ability to foster communication and collaboration between the hospital staff, the administration, and the community at large.

Prior to his position at Community Memorial Healthcare, Zdeblick served as CEO of Asante Rogue Regional Medical Center (ARRMC), the flagship hospital for Asante Health System, a position he held for five years. His tenure at ARRMC was exceptionally challenging. Zdeblick was involved in developing and executing the master plan for ARRMC’s $500 million facility renovation and expansion, all the while sustaining system profitability despite the financial challenges posed by the pandemic.

Community Memorial Healthcare is not the first nonprofit healthcare system Zdeblick has managed. His diverse professional experience includes a stint as Chief Operating Officer at El Camino Hospital in Mountain View, CA. Other career highlights include serving as Vice President of Campus Transformation and Vice President of Hospital Operations at Rush University Medical Center in Chicago, IL. Zdeblick received his Bachelor of Business Administration degree from Marquette University in Milwaukee, WI, and his Master of Management degree from the J.L. Kellogg Graduate School of Management at Northwestern University.

Adam Thunell

Chief Operating Officer & Senior Vice President, Operations

As Chief Operating Officer & Senior Vice President for Community Memorial Healthcare, Adam's responsibilities include system operations for all hospitals and ambulatory settings, physician relations, long-term strategic planning, and community interaction. He also provides oversight for the health system’s building, remodeling, and modernization projects. Prior to joining Community Memorial, Adam held various leadership roles at Cottage Health in Santa Barbara, California and with Fairview Health Services in Minneapolis, Minnesota.

Having graduated from Brigham Young University with a BS in Business Management, Adam earned his MHA in hospital administration at the University of Minnesota. He is a Fellow in the American College of Healthcare Executives (ACHE), and is actively involved in a variety of local and national boards including Livingston Memorial Visiting Nurse Association, CAPTIS (a national purchasing coalition), and Casa Pacifica Centers for Children and Families. He is a past Board Chair of the United Way of Ventura County and the Ventura County Council of the Boy Scouts of America and member of the Healthcare Executives of Southern California. Adam is passionate about providing seamless access to excellent healthcare that heals and comforts, and is committed to promoting healthy behaviors and lifestyles within the community and organizations he serves.

Anthony Russell, MD

Chief Administrative Officer, Ambulatory Medicine

As Chief Administrative Officer of Ambulatory Medicine at Community Memorial Healthcare, Dr. Anthony Russell is responsible for all aspects of clinical operations for nineteen of our Ambulatory Medicine outpatient facilities, including Outpatient Departments, Health Centers, and MSO practices.

Dr. Russell came to Community Memorial Healthcare from UCSF Benioff Children's Physicians, where he was Executive Medical Director. He also served as Medical Director of Clinical Informatics for Sutter Physician Services, where he spearheaded the adoption of the Epic electronic medical records system across Sutter Health’s California footprint.

In addition to his responsibilities with Community Memorial Healthcare, Dr. Russell is a business-savvy entrepreneur and a partner in wellness businesses across multiple countries. He has extensive board governance experience and participates on the Ventura County Medical Association Board and advises corporate boards. He also led as the Executive Director responsible for the Accountable Care Alliance of Ventura, a local Medicare Shared Savings Program (ACO) and is the executive sponsor for our Caravan Health’s ACO partnership.

A graduate of the Medical University of South Carolina, Dr. Russell is board certified in Pediatrics and Clinical Informatics. He received his MPH from Johns Hopkins and his MBA from University of Massachusetts, Amherst. In the past, Dr. Russell completed certifications as an Epic Physician Builder, Certified Physician Executive (CPE), and Certification in Medical Quality (CMQ).

Maureen Archambault

Chief Quality & Risk Officer

Maureen Archambault first joined Community Memorial in 2019 as Director of Management and Patient Safety. She has more than 30 years of experience across all segments of healthcare, including risk financing, claims management, patient safety, quality, and enterprise risk management. Maureen has spearheaded much positive change in our organization, such as the development and implementation of our STAR event reporting system, our Just Culture policy and process, and our Communication and Optimal Resolution (CANDOR) program.

Prior to joining Community Memorial Healthcare, Maureen was Chief Risk Officer for a 20-hospital healthcare system spanning six states. She has also served as Managing Director of Healthcare Practice for a national insurance brokerage and as Vice President Medical Management Services for another health system, overseeing Quality, Risk Management, Infection Prevention, Case Management, Medical Staff Services and Medical Records.

Maureen graduated from Mount Saint Mary’s University in Los Angeles with a bachelor’s degree in Nursing. She went on to earn a master’s degree in Business Administration from California Lutheran University. Maureen is a Certified Professional in Healthcare Risk Management. She also has Fellow designations from the American Society for Healthcare Risk Management and the HRET Patient Safety Leadership. Maureen serves on the boards of directors for Mount Saint Mary’s University and the Partners in Care Foundation.

Diane Drexler

Chief Nursing Officer & Vice President, Patient Care Services

Diane Drexler sets the vision for nursing and patient care at Community Memorial Hospital in Ojai and Ventura, the Community Memorial Health Centers. Her steady leadership helped our organization weather the most challenging parts of the pandemic and protect the safety of the community we serve. Diane developed and implemented COVID-19 procedures for two acute care facilities, managed pandemic staffing challenges, and created the Winter Surge Plan for both Community Memorial Hospital campuses and the Community Memorial Continuing Care Center.

Diane has been an accomplished healthcare executive and nursing leader in California and Arizona for more than three decades, including stints as Chief Nursing Officer for Yavapai Regional Medical Center (YRMC) in Prescott, Arizona. Vice President of Patient Care Services for Cancer Treatment Centers of America and Chief Nursing Officer for Banner Estrella Medical Center in Phoenix Arizona. During these years of operational leadership she has implemented shared governance models, implemented multiple new EMRs, spearheaded new program development, reduced RN turnover, overseen service excellence improvements and has been a strong advocate

Diane received her Bachelor of Science Degree in Nursing from the University of New Mexico in Albuquerque, New Mexico. She also earned a Doctorate in Nursing Practice and an MBA, both from Arizona State University in Phoenix Arizona. Dr. Drexler is a Robert Wood Johnson Executive Nurse Fellow Alumnae (2007-2010). She was selected to attend the Johnson & Johnson Wharton Fellows Nurse Executive Leadership Program 2006 at the University of Pennsylvania’s Aresty Institute of Executive Education. Dr. Drexler is a current Fellow of the American College of Healthcare Executives.

Haady Lashkari

Chief Administrative Officer, Community Memorial Hospital – Ojai

Ventura native, Haady Lashkari, joined Community Memorial Healthcare in October of 2001 as an Administrative Intern. Over the years Haady was promoted into several roles including Assistant Administrator, and Assistant Vice President before moving into his current role as Chief Administrative Officer for Community Memorial Hospital – Ojai in January 2011.

Since then, Haady has helped take the Ojai Hospital to new heights. He played an instrumental role in the renovations of the hospital and the building of the innovative Continuing Care Center. He was also significantly involved in the facility master plan of the new Ocean Tower at Community Memorial Hospital – Ventura and acted as a community liaison during the approval process for the city.

In addition to providing oversight for Ojai Hospital, Haady supports the ongoing expansion of ambulatory clinic sites by identifying new locations and supervising their development. He is most proud of being instrumental in facilitating more collaboration among physicians and bringing them together for a single standard of care within the system.

Over the years, Haady has chaired many events and participated on several Boards. Currently he serves as a member of the Ojai Hospital Foundation Board (formerly known as Ojai Valley Community Hospital Foundation) and Board President of the Monica Ros Board of Trustees.

Haady, a Fellow of the American College of Healthcare Executives, graduated from the University of California, Santa Barbara, with degrees in Sociology and Communications and has a Master’s degree in Public Administration from California State University Northridge.

Jamie Maites

Chief Marketing & Development Officer

As Community Memorial Healthcare’s Chief Marketing & Development Officer, Jamie Maites oversees brand strategy, marketing and advertising, and all internal and external communications. She also provides oversight for two philanthropic foundations that support Community Memorial hospitals in Ventura and Ojai. As our healthcare network continues to expand and evolve, she looks forward to sharing details about programs, acquisitions, and opportunities with the community.

Previously, Jamie served as Vice President of Marketing & Communications at MarinHealth in the San Francisco Bay area. She first joined that organization in 2010 as Director of Communications. During her tenure, what started out as a beloved community hospital grew into a robust healthcare network. Jamie’s accomplishments at MarinHealth include leading marketing efforts to pass a $394 million bond initiative for a new hospital building, and rebranding the hospital as the hub of a rapidly growing medical network spanning three counties. She also spearheaded the development of new digital platforms, including an enterprise website, hospital intranet, and CRM platform, as well as five social media platforms.

During the pandemic, Jamie’s expertise was invaluable in keeping the community informed about changing policies, testing, treatment, and other COVID-19 related matters.

Prior to her stint at MarinHealth, Jamie was at El Camino Hospital in Mountain View, California, where she worked her way up from Marketing Coordinator to Marketing Manager.

Jamie earned her BA in Business Management Economics from the University of California, Santa Cruz. In addition, she took part in the University of California Education Abroad program at the Faculty of Economics and Commerce in Melbourne, Australia.

Jim Corwin

Chief Financial Officer

Jim Corwin has served as Chief Financial Officer (CFO) since October of 2020. In addition to managing all financial areas at Community Memorial Healthcare, he also oversees our revenue cycle, health information management, utilization review/case management, and materials management.

Jim has a 30-year history in for-profit and not-for-profit healthcare, including 25 years as a CFO. Prior to joining Community Memorial, he served as regional CFO for Providence Health Systems California Region for 16 years with 12 years over their physician division and 4 years as the region’s hospital division CFO of Shared Services. Before his tenure at Providence, Jim spent 12 years with Tenet Healthcare as CFO for multiple hospitals in the Los Angeles and Riverside County Areas.

Jim graduated from the University of Southern California’s School of Business in 1988. He was selected by the San Fernando Valley Business Journal top healthcare CFO of the Year in 2010 and nominated for LA Business Journal top CFO in 2012. In 2021 and 2022, Pacific Business Times selected Jim as one of the top CFOs in Ventura/Santa Barbara County. Jim is a former musician and played in the LA area from 1979 to 1986. He also served as a member of the Songwriters Hall of Fame Board from 2007 to 2017.

Kari Osborn-McPherson

Chief Human Resources Officer

As Chief Human Resources Officer for Community Memorial Healthcare, Kari Osborn-McPherson’s focus is on employee relations, satisfaction, and compensation. A true “people person,” she believes in the value of building relationships, anticipating the needs of employees, and making every member of our team feel heard and understood. During the pandemic, Kari filled the critical role of coordinating our vaccine clinics to help keep our staff, providers, and the residents of Ventura County safe and well.

Kari’s 26 year career began in the payroll arena and quickly expanded to include Human Resources. She joined Community Memorial Healthcare in 2008 as Manager of Human Resources covering Community Memorial Hospital – Ojai (formerly Ojai Valley Community Hospital), the Continuing Care Center, and three of our Community Memorial Health Centers. In 2017, she was promoted to Director of Human Resources for all of Community Memorial Healthcare. Kari’s responsibilities continued to expand with her 2019 promotion to Vice President.

A certified human resources manager, Kari holds a BS in Business Administration from the University of Phoenix.

Keith MCWilliams

Chief Information Officer

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.

Lukasz Iwanczyk, MD

Chief Medical Information Officer

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.

Richard Reisman, MD

Vice President, Physician Affairs

A graduate of Duke University, Dr. Reisman obtained his medical degree from Emory School of Medicine, where he earned membership to the AOA Medical Honor Society. He went on to complete a residency in Obstetrics and Gynecology at the UCLA Center for the Health Sciences. Dr. Reisman is board-certified in Obstetrics and Gynecology.

Sam Small, DO

Chief of Medical Education & ACGME Designated Institutional Official

It is due to the vision and persistence of Dr. Samuel Small, our Chief of Medical Education & ACGME Designated Institutional Official that the Graduate Medical Education (GME) program came into being at Community Memorial Healthcare. Dr. Small oversees our faculty, residents, and seven academic teaching clinics. He has made the growth and development of an outstanding research department a priority, with more publications every year. Thanks to Dr. Small and his GME team of five Program Directors, an Administrative Director, a Director of Medical Education, a Director of GME Operations, and a Director of resident and medical student Well Being, Community Memorial Healthcare offers GME programs in Family Medicine, Internal Medicine, General Surgery, Orthopedic Surgery, and Psychiatry. We also host third-year medical students from Western University of Health Sciences for their entire year of clinical rotations. All our residency programs are fully accredited by the Accreditation Council for Graduate Medical Education (ACGME).

Dr. Small began practicing spine and orthopedic surgery at Community Memorial Hospital – Ventura in August of 1996. Having begun his medical career in 1980 at Community Memorial Hospital – Ojai (formerly Ojai Valley Community Hospital), where he practiced family, emergency, and addiction medicine for over a decade. In 1991, Dr. Small returned to graduate medical education, training as a resident in Orthopedic Surgery, and then completing a fellowship in Spine Surgery.

Dr. Small graduated Cum Lade from the University of Michigan in Ann Arbor with a Bachelor of Science degree. He earned his Doctor of Osteopathic Medicine degree from Midwestern University in Chicago. He completed his training in Family Medicine at what is now Henry Ford Health’s Macomb, Michigan Campus in 1980. In 1991 he returned to Graduate Medical Education at Henry Ford Health and completed a five year residency in Orthopedic Surgery.

He then completed a Spine Surgery Fellowship in the Department of Orthopedic Surgery at UCLA Medical Center in Westwood, California.

It was during his Spine Fellowship that he discovered his passion for teaching.

Office of the Chief Medical Officer

Lamar Bushnell, MD

Lamar Bushnell, MD has been providing cardiovascular and thoracic surgical care for patients in the Ventura County area for the past 28 years. He has served as Chair of the Community Memorial Surgery Department and Chief of the Medical Staff at Community Memorial Hospital. He has also served on the Community Memorial Healthcare Board of Trustees and the Board of the Ventura County Medical Society. In addition to his role as Co-Chief Medical Officer, Dr. Bushnell is also the Director of Cardiac Surgery.

A California native raised in the area that became Silicon Valley, Dr. Bushnell developed an interest in technology and innovation that has stayed with him throughout his medical career. He earned a Bachelor of Science in Biology at the University of Utah where he also did graduate work in the developing field of genetic engineering, completed medical school, and completed his general surgery residency. After a three-year fellowship in cardiothoracic surgery at the University of Iowa, he was pleased to return to California to apply his academic center training in a community hospital setting.

Recognizing the unique opportunity we have to live in such a beautiful area and have access to expert medical care in our community-owned health system, he is pleased to work with our accomplished and collaborative Executive Team to advance Community Memorial Healthcare into the future.

Deborah Carlson, MD

Dr. Debby Carlson joined the newly formed Office of the CMO in July 2023. She has practiced internal medicine within Community Memorial Healthcare for over 25 years. Her passions include physician education, patient quality of care, and customer experience.

Dr. Carlson served as the Community Memorial Healthcare Internal Medicine Residency Program Director from 2013-2023, having developed the program and guided it through its successful growth. Over the past decade, Dr. Carlson has taught many physicians who now practice in our community.

Dr. Carlson has been a long-time medical staff leader within Community Memorial, chairing committees and serving in various leadership roles for the medical staff. Her accomplishments include being an inaugural member of Community Memorial’s Palliative Care program, and establishing other influential medical staff committees such as the Inpatient Division, Diversity, Equity, and Inclusion committee, and the Employment of Metrics for the Promotion Of Wellness and Enhancement of Resilience (EMPOWER) committee. Dr. Carlson’s preferred approach to performance improvement is collaborative and patient-focused. Her work on Patient Engagement contributed to Community Memorial’s performance measures, scoring in the top decile in the nation.

While serving as Chief of the Medical Staff from 2021-2022, Dr. Carlson launched a monthly e-newsletter to inform the medical staff about the health system and decisions affecting the medical staff. She also initiated system reform to the medical staff’s self-disciplining process, increasing its objectiveness and effectiveness.

Dr. Carlson is a Southern California native. She attended Tufts University and then the University of Southern California Keck School of Medicine. Finally, she concluded her physician training with a residency and chief residency in internal medicine at the Los Angeles County-USC Medical Center. Today, Dr. Carlson remains board-certified in internal medicine and continues her clinical work as a hospitalist at Community Memorial Hospital - Ventura.

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.