Maine Medical Center
Maine Medical Center Sign


Britt Crewse

Britt Crewse, MBA, MHS, CPA

Regional President

Britt Crewse is the Regional President, overseeing all clinical care and operations at Maine Medical Center in Portland and Southern Maine Health Care in Biddeford and Sanford. He joined MaineHealth in January of 2024 after serving in various health care leadership roles for nearly 30 years.

Throughout his career, Britt has focused on building strategic plans and high-performing teams to increase the value of patient care and strengthen patient outcomes. He most recently was the chief executive officer of adult hospitals at the University of Mississippi Medical Center (UMMC). During his tenure, he spearheaded a collaborative effort that produced measurable improvements in quality, safety and patient experience at University Hospital, Wallace Conerly Critical Care Hospital and Wiser Hospital, all on the Medical Center’s Jackson campus. He also has led teams at Duke University Health System in Durham, N.C., Ernst & Young LLP and Memorial Medical Center in Savannah, GA.

Britt earned his Master of Health Science and Master of Business Administration at the University of Florida and his Bachelor of Science in Business Administration at Ohio State University.

Joel L. Botler, M.D.

Joel L. Botler, MD

Regional Chief Medical Officer

Dr. Joel Botler serves as Maine Medical Center’s 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’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 as 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.

Jennifer McCarthy

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

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.



Chief Nursing Officer

Devin Carr is Chief Nursing Officer at Maine Medical Center, leading the medical center’s Magnet-Recognized nursing team. Devin joined MMC in 2020, coming from the University of Michigan Medical Center (U of M) in Ann Arbor, a Magnet-designated hospital, where he served as the chief nursing officer for one of the nation’s leading medical centers. Prior to U of M, Devin served as Administrative Director of the Surgery and Transplant Patient Care Center at Vanderbilt University Medical Center, a three-time Magnet-designated facility, in Nashville, Tennessee.

He has more than 30 years of experience in healthcare in a variety of clinical, academic and leadership roles. He has employed collaboration across multiple enterprises to improve patient satisfaction scores, reduce risk and harm, and strengthen regulatory compliance readiness. 

Devin earned his DNP from Concordia University Wisconsin, an MSN from Clarkson College, and a BSN from Middle Tennessee State University, as well as an associate degree of applied science in respiratory therapy from California College for Health Sciences.

Dr. Douglas B Sawyer, MD

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 MaineHealth Institute for Research (MHIR).

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.

Dr. Mark G Parker, MD

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.

Jennifer Jewell

Jennifer Jewell, MD

President, Maine Medical Center Medical Staff

Dr. Jennifer Jewell is the current President of the Maine Medical Center Medical Staff. She is a hospital-based pediatrician at The Barbara Bush Children’s Hospital and an Associate Clinical Professor of Pediatrics at Tufts University School of Medicine.

Dr. Jewell received her Bachelor of Science degree from Knox College in Galesburg, Illinois, followed by her Medical Degree at The Boston University School of Medicine. After medical School, Dr. Jewell did residency training in Pediatrics and Chief Residency at The Barbara Bush Children’s Hospital at Maine Medical Center.

After completing training, she took a faculty position at The Barbara Bush Children’s Hospital in 2002. Dr. Jewell has an interest in medical leadership and quality improvement.

Margo Peffer

Margo Peffer

Vice President, Human Resources

Margo Peffer is Maine Medical Center’s Vice President of Human Resources, overseeing the HR functions at MMC, Southern Maine Health Care and the MaineHealth Institute for Research.

Margo joined Maine Medical Center in 2023, following a long career at Hannaford Supermarkets, where she was Chief People Officer and Vice President of Human Resources, Diversity, Equity and Inclusion and Internal communications. In a career spanning over 20 years, Margo progressed from store manager into human resources, and served in numerous HR positions.

Margo has her Chief Human Resources Officer (CHRO) Certification from Wharton Business School through The University of Pennsylvania, has attended the Harvard Business School Executive Leadership Program, and graduated from University of Maine with a degree in Business Administration.

MacMillan Donald 20WEB

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.

Alexander Green

Alexander M. Green

Vice President of Strategy and Business Development

Alexander M. Green is MaineHealth’s Vice President of Strategy and Business Development. He serves as the strategy executive in MaineHealth’s Southern Region which includes Maine Medical Center and Southern Maine Health Care. He partners with his colleagues to guide strategic and business planning activities to improve and expand the healthcare infrastructure in Southern Maine.

Al joined MaineHealth in March 2015 and brings over 10 years of progressive leadership experience in healthcare. He has worked in many capacities within MaineHealth including Project Manager in the Center for Performance Improvement, Director of Strategy and Regulatory Compliance, and Associate Vice President of Strategic Planning. Prior to joining MaineHealth, Al served as Project Manager at an independent Oncology Practice in Cincinnati, OH.

He received a master’s in healthcare services administration from Xavier University in Cincinnati, OH and a bachelor’s degree in business administration and finance from Fort Lewis College in Durango, CO. He is a certified Project Manager Professional from the Project Management Institute, a member of the American College of Healthcare Executives, and a member of the Society for Health Care Strategy & Market Development.

In addition to his professional endeavors, Al has a family with two small children and is an active volunteer for organizations that promote conservation of our natural resources.

Clayton M. Holtzman

Clayton M. Holtzman

Vice President of Communications and Public Affairs

Clayton Holtzman is Vice President of Communications and Public Affairs at Maine Medical Center.

Clay joined MMC in 2015 and supports internal and external communications as well as strategic communications 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. In a previous career, Clay worked as a business journalist in the Pacific Northwest and Southwest regions.

Clay is a Fellow of the Advisory Board and a member of the Society for Healthcare Strategy and Market Development.