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Senior Leadership

Richard W. Petersen, FACHE

President of MaineHealth & Chief Executive Officer of Maine Medical Center

Rich Petersen is President of MaineHealth and Chief Executive Officer of Maine Medical Center (MMC). Prior to his appointment, Rich served as President and CEO of MMC and prior to that as Executive Vice President and Chief Operating Officer at MMC for nine years. Before joining Maine Medical Center, Rich served as Senior Vice President for Kaleida Health Systems located in Buffalo, New York, a 1,600-bed system with a $1 billion annual budget. Rich currently serves as a board member for The Foundation for Maine's Community Colleges and The John T. Gorman Foundation. Rich is also a Corporator of MaineHealth and a fellow in the American College of Healthcare Executives.


Jeffrey D. Sanders

President of Maine Medical Center

Jeff Sanders was named President of Maine Medical Center in 2018. Prior to that, he served as Executive Vice President and Chief Operating Officer, responsible for day-to-day operations of the hospital. In that role, he served as a key strategic advisor to the President and CEO, other senior executives, and physician leaders. Jeff plays a critical role in the effective collaboration and integration with physicians, developing strong relationships and initiatives aimed at strengthening market presence and integrating services and practice sites. Before joining MMC, Jeff was the operating officer at Intermountain Medical Center in Murray, Utah, where he oversaw cardiovascular services, imaging services, sleep services, hyperbaric medicine, surgical services, transplant services, and medical research. Prior to his role at the flagship of Intermountain Healthcare, he was at McKay-Dee Hospital in Ogden, Utah, in charge of a number of programs including surgery, critical care, rehabilitation, laboratory services, information systems, and behavioral medicine. Jeff also played a key role in Intermountain Healthcare's partnership with GE Healthcare, leading numerous projects as part of the development of an integrated electronic medical record.


Jennifer McCarthy

Chief Operating Officer

Jennifer McCarthy is Maine Medical Center's Chief Operating Officer, responsible for day-to-day operations of the hospital. She serves as a key strategic advisor to the President, other senior executives, and physician leaders.

Jennifer oversees Maine Medical Center’s Facilities, Human Resources, Imaging Services, Patient Care Services and Patient Care Support Services, and Service Line operations. She plays a critical role in the effective collaboration and integration with physicians, developing strong relationships and initiatives aimed at strengthening market presence and integrating services and practice sites.

She brings more than 20 years of health care experience to Maine Medical Center. Previously, Jennifer served as Chief Operating Officer of Dr. P. Phillips Hospital (Orlando Health) in Orlando, Fla., and before that as Vice President of Operations at Palm Bay Hospital (Health First) in Melbourne, Fla.

She is board-certified in healthcare management as a fellow of the American College of Health Care Executives (FACHE). She holds a master’s degree in business administration from the Florida Institute of Technology in Melbourne, Fla., and a bachelor’s degree in organizational development from Rollins College in Winter Park, Fla.


Lugene “Lou” Inzana, MBA, CPA

Chief Financial Officer and MaineHealth Associate Chief Financial Officer

Lugene “Lou” Inzana serves as Maine Medical Center’s Chief Financial Officer and as Associate Chief Financial Officer for MaineHealth. In his roles, Lou provides leadership and financial oversight of Maine Medical Center and financial support services for the other members of MaineHealth.

Lou is a seasoned health care finance expert with nearly 30 years of progressive leadership experience at organizations throughout the Northeast. He serves as a key strategic and financial advisor to the President and Chief Executive Officer of MMC, providing the analytical framework and business judgment necessary to evaluate alternative initiatives and help drive operating and financial performance. He has responsibility for budget and reimbursement, financial reporting, supply chain, financial planning, and revenue cycle management.
Prior to joining Maine Medical Center in 2014, Lou was most recently Vice President of Finance and Support Services/Chief Financial Officer at Lawrence + Memorial Corporation/Hospital in New London, Conn. Over the course of his career, Lou has carved out a reputation as a strong leader with high integrity, top-flight communication skills, and a passion for health care.

Lou holds both a B.A. in Accounting and an MBA in Finance from St. Bonaventure (N.Y.) University. He is also a Certified Public Accountant, a Fellow of the Healthcare Financial Management Association, and a member of the American College of Healthcare Executives. In addition to his professional endeavors, Lou has been an active volunteer for many years, serving on a wide range of boards and committees for organizations that promote stronger communities.


Maureen Van Benthuysen

Chief Administrative Officer Services Lines

Maureen Van Benthuysen serves as Maine Medical Center’s Chief Administrative Officer of Service Lines. Maureen oversees 12 service lines at Maine Medical Center: Adult Medicine, Cardiovascular, Neuroscience, Surgery, Oncology, Women’s; Pediatric’s; Emergency and Urgent Care; Critical Care, Orthopedics and Primary Care. She also leads four MaineHealth system wide Service Lines. Her role involves cultivating the patient-centered framework by enhancing care coordination, access to care, optimizing models of care delivery and patient outcomes.

Maureen has more than 30 years of experience in health care, and had served in the capacity of a Senior Vice President at New York’s prestigious Mount Sinai Hospital. In this role, Maureen provided full administrative, financial, operational, and strategic oversight to multiple departments and clinics, and served on the Steering Committees supporting the implementation of the electronic medical records system, Epic.

Prior to her work at Mount Sinai, Maureen was Director of Rehabilitation Services at St. Peter’s Hospital in Albany. Maureen began her health care career as a Physical Therapist at Sunnyview Hospital and Rehabilitation Center in Schenectady, New York.


Joel L. Botler, M.D.

Chief Medical Officer & President of Maine Medical Partners

Dr. Joel Botler serves as Maine Medical Center’s Senior Vice President of Medical Affairs and Chief Medical Officer, overseeing all clinical, medical management, and programmatic aspects of health care delivery. In this role he also serves as the primary liaison between MMC management and the private physician practice community. Dr. Botler is also the President of Maine Medical Partners, a subsidiary of MMC.

Dr. Botler’s relationship with MMC dates to 1979 when he began his Internal Medicine internship and residency after earning his medical degree at the State University of New York (SUNY) in Brooklyn. Since that time, he has served the southern Maine community as a primary care internist for 30 years; helped to found InterMed in 1995; and held numerous leadership roles at MMC focusing on areas such as Family Medicine, Geriatrics, and Adult Medicine. Most recently, Dr. Botler held the title of MMC Vice President, Adult Medicine Service Line, and co-chair of the Maine Medical Partners Finance Committee.

Dr. Botler is well regarded as a “physician’s physician” throughout the community, earning praise from peers and patients alike. He is a four-time winner of the MMC Family Medicine Residency Program Inpatient Attending of the Year award and has also been recognized as the Maine Alzheimer’s Champion for 2011.


Marjorie S. Wiggins, DNP, MBA, R.N., FAAN, NEA-BC

Chief Nursing Officer

Marge Wiggins is Chief Nursing Officer of Maine Medical Center and the MaineHealth System. An Adjunct Faculty in the University of Southern Maine’s School of Nursing and St. Joseph’s College, Marge has published numerous articles and several book chapters on care delivery models. She led MMC's development of the evidence-based Partnership Care Delivery Model, and consulted in the US and abroad on care delivery models. Over the course of 15 years, Marge has served on multiple task forces for the American Association of Colleges of Nursing (AACN) including efforts to implement the Clinical Nurse Leader role delivering presentations nationally and internationally; the Governance Task Force and the Baccalaureate Essentials Work Group. She also serves on multiple task forces for the Accreditation Council for Graduate Medical Education (ACGME) representing nursing on the Clinical Learning Environment Review (CLER) Task Force, the Chief Nursing Officer (CNO) task force, and the Pursuing Excellence in Innovation (PEI) task force. Marge maintains membership in several professional organizations, including the American Organization of Nurse Executives, the Organization of Maine Nurse Executives, the Clinical Nurse Leader Association, and is a longstanding member of Sigma, formerly known as Sigma Theta Tau International Honor Society of Nursing.


Douglas B. Sawyer, MD, PhD

Chief Academic Officer

Doug Sawyer, M.D., is chief academic officer for Maine Medical Center. In his role, he oversees all aspects of the institution’s academic and research missions, including medical training and post graduate programs, the Maine Track program partnership with Tufts University School of Medicine and also Maine Medical Center Research Institute.

Dr. Sawyer joined MMC in 2014 to serve as MMC’s chief of cardiac services and physician leader of the cardiovascular services line. Prior to that, Dr. Sawyer worked at Vanderbilt University where he served in clinical and academic leadership positions. He earned his medical degree and doctorate from Cornell University and completed his postgraduate training, including his internship and residency in Internal Medicine and his Clinical Cardiology Fellowship, at Brigham and Women’s Hospital in Boston.

Dr. Sawyer continues to serve his community as a practicing cardiologist at Maine Medical Partners.


Mark G. Parker, MD

Vice President, Quality and Safety

Dr. Mark Parker has been on medical staff as a nephrologist at Maine Medical Center since 1999 and assumed the role of Vice President of Quality and Safety in 2017. He attended the University of Connecticut School of Medicine and completed an internal medicine residency and nephrology fellowship at Tufts (formerly “New England”) Medical Center. He worked briefly in private practice and subsequently at Lahey Clinic in Burlington, Mass. before moving to Maine.

At MMC, Dr. Parker has served in a variety of leadership roles, including 15 years as the nephrology fellowship program director and nine years as the nephrology division director. During that time, he developed expertise and a national reputation in nephrology medical education and healthcare workforce issues. He continues to participate in clinical care and teaching since transitioning to quality and safety leadership.

As a quality and safety leader, Dr. Parker has completed certificate work at the Institute for Healthcare Improvement in both the Improvement Advisor and Patient Safety Executive programs. He provides oversight for the hospital Operational Excellence, Patient Experience, Risk Management/Patient Safety, and Quality Analysis teams, and he also helps lead Maine Medical Partners quality improvement activities. Dr. Parker retains a strong presence in medical education, guiding quality and safety curricula and supporting student and resident involvement in related projects.


Christopher Cary, M.D.

President, Maine Medical Center Medical Staff

Dr. Christopher W. Cary is the current President of the Maine Medical Center Medical Staff. He
has served the Anesthesiology department, the hospital, and the state and national anesthesiology societies in varying capacities over his career.

He is the former anesthesiology residency Program Director at MMC, the former President of the Maine Society of Anesthesiologists, and a former member of the American Society of Anesthesiologists Board of Directors.

Dr. Cary received his bachelor of science and medical degrees at the University of Massachusetts. He also completed a year of research with the Anesthesiology department at UMass Medical School after graduation. His residency training in anesthesiology was started at Duke University with his final year of completion at Maine Medical Center.

Prior to his return to Maine in 1998, Dr Cary was the Vice Chairman of Berkshire Anesthesiologists PC, in Pittsfield Massachusetts. He and his wife, Mary Anne, are the parents of 2 grown sons and reside in Cape Elizabeth. They are the proud grandparents of Finnegan, age 3. 


Edward A. Farrell

Vice President, Strategy and Business Development

Ed Farrell is the Vice President of Strategy and Business Development at Maine Medical Center and MaineHealth. Ed joined Maine Medical Center and MaineHealth in March 2013 and has more than 20 years of strategic planning experience. In his role, he supports MaineHealth and its local health systems with a variety of planning related activities that enhance overall quality, efficiency, and market development. Some of these key activities include the development and facilitation of strategic plans, business plans, medical staff plans, annual objectives development and also implementation plans. He also functions as a strategic planning resource providing insights into data requirements, needs and analysis.

Prior to joining Maine Medical Center and MaineHealth, Ed served as the Regional Director of Planning and Strategic Business Development for 12 years with the Henry Ford Health System in Michigan. Has has also held positions in strategic planning with the Greenville Hospital System in Greenville, S.C., the Rockford Health System in Rockford, Ill. and the University of Chicago Hospitals in Chicago.

Ed holds a Bachelor’s in Health Administration from Indiana University and a Master’s in Health Administration from Governor’s State University. He is also a member of the Society for Healthcare Planning and Market Development and the New England Society for Healthcare Strategy.


Don MacMillan, MS, CHCIO

Senior Director of IS and Regional CIO

Don MacMillan, MS, CHCIO, is Maine Medical Center’s Senior Director of IS and Regional CIO. Don provides relationship management between IT and hospital executives, consulting leaders on strategies to leverage technology to meet organizational and operational objectives and provides direction on governance, service, change management, staff development and assessment of systems to managers and staff.

Don is a CHIME (College of Healthcare Information Management Executives) Certified Healthcare Chief Information Officer with a wide range of experiences at a variety of healthcare organizations going back to 2005. Prior to Maine Medical Center, he was director of patient care innovations at Methodist Le Bonheur Healthcare in Tennessee, and he ran an independent consulting company.

Don has an MS in business from Husson University in Bangor and received his bachelor’s degree from Arizona State University in 2001. He is a member of two IT professional organizations, CHIME and the Healthcare Information Management Systems Society, and active in community service.


Thomas C. Ter Horst

Vice President, Human Resources

Tom Ter Horst serves as Vice President, Human Resources, for Maine Medical Center. In his role, Tom oversees the day-to-day administration of HR programs, policies and services at Maine Medical Center. He is responsible for ensuring efficient, effective and compliant customer focused HR operations.

Tom comes to Maine from Madison, Wis., where he most recently served as system vice president of human resources for SSM Health, a multi-state, not-for-profit health system. Tom has over 15 years of HR leadership at health care organizations covering a broad range of critical functions including strategic planning, change management, recruitment, compensation, training and much more. Prior to serving as a system vice president, he served as vice president for human resources at Aurora Health Care, a Milwaukee-based integrated health care provider serving Wisconsin and northern Illinois.

Tom earned his MBA from Marquette University in Milwaukee and his BBA from St. Norbert College in De Pere, Wis. He is a member of the Society for Human Resource Management and is SHRM-SCP and SPHR certified.


Clayton M. Holtzman

Associate Vice President of Communications and Public Affairs

Clayton Holtzman is Associate Vice President of Communications and Public Affairs at Maine Medical Center. Clay joined MMC in 2015 and directs internal and external communications as well as strategic communications support for organizational priorities. He is a member of the MaineHealth Marketing & Communications Department senior team.

Previously, Clay served as director of Population Health Communications at Renton, Wash.-based Providence St. Joseph Health, one of the nation’s largest nonprofit health systems. He has also managed public relations for Swedish Health Services and was part of the digital communications team at Fred Hutchinson Cancer Research Center, both in Seattle.

Clay is currently completing an Advisory Board fellowship and is a member of the Society for Healthcare Strategy and Market Development.