Leadership Team

Lakeridge Health is governed by a voluntary Board of Trustees made up of community members, medical staff, volunteer, and Foundation representatives.

Our Senior Management Team is focused on implementing the Strategic Plan of Lakeridge Health. The team is responsible for overseeing the administration of the hospital and relentlessly pursuing quality and safety improvements.

Cynthia Davis, BSc, MSc, President and CEO

Cynthia DavisCynthia Davis joined Lakeridge Health as President and CEO in January 2021.

She is a registered nurse by profession and has over three decades of health-care experience. Cynthia brings a mix of leadership skills and operational experience acquired through her progressive leadership roles in Ontario and Newfoundland. She has a passion for patient-centred care, which she fosters through engagement and partnerships.

Cynthia’s career began as a front-line nurse in a variety of settings in Canada and the United States. In Canada, she began work at St. Michael’s hospital where she had the opportunity to work as a manager in the surgical and cardiac programs during a time of change for the organization. She later joined St. Mary’s General Hospital in Kitchener, Ontario and led the development of a new tertiary level Cardiac Program.

Following this, Cynthia returned to her home province where she joined Western Health, one of four leading integrated health authorities in Newfoundland and Labrador responsible for the delivery of integrated health services to a diverse population across the entire continuum of care. She served eight years as the Vice President of Patient Services and Chief Nursing Officer. She went on to be appointed the President and Chief Executive Officer.

Cynthia is a graduate of the Western Regional School of Nursing diploma program and holds a Bachelor of Science (Nursing) from Dalhousie University and a Master of Science from the University of Toronto. She is a member of many provincial and national health-care engagement groups and a member of the Canadian College of Health Leaders.

Email Cynthia

Phone Cynthia: 905-576-8711 ext. 34421

Dr. Tony Stone, Chief of Staff

Dr. Tony Stone

Dr. Tony Stone is a family physician who has delivered care to patients at Lakeridge Health since 1992. His activities have included emergency medicine, inpatient care, palliative care, and low risk obstetrics. His community practice is located in Bowmanville.

Dr. Stone is active in the community and has taken on numerous health care leadership roles, including posts as President of the Durham Medical Society and President of the Medical Staff Association of Lakeridge Health. Prior to the formation of Lakeridge Health, Dr. Stone also served as Chief of Staff at Memorial Hospital Bowmanville.

Throughout the COVID-19 pandemic, Dr. Stone has served as Co-Chair of the Durham Region COVID-19 Steering Committee, the Durham Region COVID-19 Vaccine Planning Executive Table, the COVID-19 Response Partners Group, and is a member of the Durham Ontario Health Team Steering Committee.

Dr. Stone is a graduate of the University of Toronto, completing a Bachelor of Science (honours) in human biology in 1986 and then medical school in 1990. Dr Stone received his certification from the College of Family Physicians of Canada in 1992.

Dr. Stone and his family have resided in Durham Region since 1970. 

Email Tony

Phone Tony: 905-576-8711 ext. 33266

Dr. George Buldo, Vice President, Medical and Academic Affairs

Dr. Buldo

George joined Lakeridge Health in 1997 after completing his training in Internal Medicine and Nephrology at the University of Toronto.  He has served as Chief of Nephrology and Chief of Medicine, overseeing growth and specialization in these successful programs, and also served as Chair of the Clinical Services Plan Steering Committee at the CE LHIN.  In 2017, George obtained his Master of Science in Health Care Management from Harvard University. 

As VPMA George oversees our Medical Directors, working with doctors to improve quality, efficiency, and drive down our wait times and leads our academic and research vision for Lakeridge Health.

Email George

Phone George: 905-623-3331 ext. 21357 


Petrina McGrath, BSN, MN, PhD, Health System Executive, People, Quality and Practice and Chief Nursing Executive (CNE)

Petrina is an accomplished health-care leader with extensive experience leading change and driving results within complex health-care environments. Throughout her career, Petrina has been a committed leader, educator, and researcher in the areas of patient- and family-centred care, quality, safety, and interprofessional practice.

Most recently, she served as the Executive Director of Quality and Safety for the Saskatchewan Health Authority, which delivers health care to 1.2 million people with 43,000 staff and 2,500 physicians.

Throughout all phases of the pandemic, Petrina provided invaluable service and support to the Province of Saskatchewan’s pandemic response as the Safety Officer in the Emergency Operations Centre while continuing with her Executive Director responsibilities.

Petrina sits on the Board of Healthcare Excellence Canada. Created in 2020, the Board brings together the Canadian Foundation for Healthcare Improvement and the Canadian Patient Safety Institute.

Petrina received her Bachelor of Science in Nursing at the University of Saskatchewan, her Master of Nursing at the University of Toronto, and her PhD in Human and Organizational Systems from the Fielding Graduate University in Santa Barbara, California.

Email Petrina

Phone Petrina: 905-576-8711 ext.34447

Kirsten Burgomaster, PhD, Health System Executive, Regional and Community Care

Kirsten Burgomaster

Kirsten is an accomplished leader with significant experience in health care, academia, and research in both tertiary and community hospitals. She has taken on many diverse hospital leadership roles over the years in the areas of research, academic affairs, patient experience, inclusion, diversity and equity, and oncology, and is an adjunct professor at Ontario Tech University.

Kirsten has been a leader within the Cancer program at Lakeridge Health for over ten years. Since 2019, she has served as Ontario Health's (Cancer Care Ontario) Regional Vice President of the Central East Regional Cancer Program (CE RCP), which includes the Durham Regional Cancer Centre at Lakeridge Health. In 2021, her role was expanded to Health System Executive, Regional and Community Care. In this position, Kirsten has oversight of the CE RCP and Regional Nephrology and Diabetes, and serves as Lakeridge Health’s Executive Lead for the Durham Ontario Health Team (OHT).  Kirsten works with many partners across the continuum of care to create and advance synergies between acute care, primary care, and many community-based programs at a regional and provincial level.

Kirsten received her Bachelor of Kinesiology and PhD in Physiology from McMaster University, and is a graduate of the University of Toronto’s Advanced Health Leadership Program, Rotman School of Management.

Email Kirsten

Phone Kirsten: 905-576-8711 ext. 36161 

Dr. Ilan Lenga, Chief Information Officer/Chief Medical Information Officer (CIO/CMIO)

Dr. Ilan LengaDr. Ilan Lenga joined Lakeridge Health in 2004 and has dedicated his career to advancing the organization in medical information management and technology, promoting standardized care, and improving data quality.

As the CIO/CMIO, he is responsible for Digital Transformation at Lakeridge Health. Dr. Lenga has played a key leadership role in the procurement of the Clinical Information System for the hospitals across Ontario’s Central East Region and continues to lead the implementation and governance of this system for both Lakeridge Health and the Central East Region. In addition, he serves as the Digital Health Lead for the Durham Ontario Health Team, which is advancing virtual care, data sharing, and analytics throughout Durham Region.

He is a computer programmer and has written and developed health care related computer and mobile phone applications.

Dr. Lenga is also a practicing nephrologist at Lakeridge Health, a lecturer at the University of Toronto, and an adjunct assistant professor at Queen’s University.

Email Ilan

Christopher J. Squire, CPA, CA, Health System Executive, Corporate Services and Chief Financial Officer 

Christopher J. Squire

Chris is an accomplished health-care leader with over 13 years’ experience in financial and support services leadership. 

Prior to his arrival at Lakeridge Health, Chris most recently served as the Vice President of Corporate Services and Chief Financial Officer at Western Health, one of the four leading integrated health authorities in Newfoundland and Labrador responsible for the delivery of integrated health services to a diverse population across the entire continuum of care. In this role, he was responsible for financial services, capital planning and redevelopment, health records, food services, environmental services, and facilities and equipment operations.

During his tenure at Western Health, Chris participated in the implementation of leadership and talent management frameworks; led the development of a financial shared services model for the provincial health sector; participated on the provincial health accord subcommittee, Digital Health; provided governance to provincial eHealth delivery through the eHealth Executive Committee; and served on provincial committees focused on improving efficiency and data quality within the health system.

In addition, his professional accounting designation, in combination with a Master of Business Administration(c), leadership development through LEADS Canada, Management Information Systems training through the Canadian Institute for Health Information, and training in process improvement/Lean, has given him the tools to provide effective financial oversight and leadership to health-care organizations.  

Email Chris

Colleen Wilkinson, Interim Vice President, Clinical Services

Colleen Wilkinson

Colleen is a Registered Nurse with 23 years of experience in a variety of direct care, teaching and leadership roles. She obtained her Master’s Degree in Nursing in 2003. She joined Lakeridge Health in 2011 and is committed to advancing evidence based practice in Nursing and Allied Health Care.

Email Colleen

Phone Colleen: 905-576-8711 ext. 34479




Julie Goldstein, RN, BScN, MBA/MScN, Interim Vice President, Clinical Services

Julie GoldsteinJulie joined Lakeridge Health in February 2011.

As a Registered Nurse by profession, Julie has had the privilege of practicing nursing as a direct care provider, educator, and leader for more than 30 years and brings a wealth of health-care knowledge and experience to Lakeridge Health.

Prior to her current role, she held numerous clinical and corporate leadership roles at Lakeridge Health in various departments, such as Women’s and Children’s Health, Quality, Risk, Patient Services, Operations, Staffing, Patient Experience, Process Improvement, and most recently, on the COVID-19 Response Team.

Prior to joining Lakeridge Health, Julie served in leadership roles at Sunnybrook Health Sciences Centre, Providence Centre, North York General Hospital, and Rouge Valley Health System. She has also worked at various local educational institutions teaching nursing students.

Julie holds a Bachelor of Science (Nursing) from the University of Toronto, and a Master of Science (Nursing) and Master of Business Administration from the University of Phoenix.

Email Julie

Phone Julie: 905-576-8711 ext. 36373