Deepak Sharma
President and CEO
Deepak Sharma is a health system leader with more than 25 years of progressive experience across Ontario's hospital sector, spanning large academic centres, major community hospitals, and provincial health agencies.
Most recently, Deepak served as Vice President, Strategy & Organizational Performance at William Osler Health System, where he led the development and launch of a five-year strategic plan built through deep engagement with staff, patients, community members, and the Board of Directors. He spent over six years at Osler in executive leadership roles.
Prior to Osler, Deepak held senior leadership positions at North York General Hospital, London Health Sciences Centre, and Rouge Valley Health System, with additional consulting work for Cancer Care Ontario and the Ontario Ministry of Health.
Deepak holds a Master of Health Science in Health Administration from the University of Toronto, an Honours Bachelor of Science from the University of Waterloo, and a Lean Six Sigma Black Belt from York University's Schulich School of Business. He is a Certified Health Executive (CHE) through the Canadian College of Health Leaders.
Lynn Armstrong
Interim VP Clinical Services & Chief Nursing Executive
Lynn Armstrong is a dedicated healthcare leader with a strong commitment to delivering high-quality, patient-centered care. With extensive experience in clinical leadership, she currently serves as Interim Vice President, Clinical Services and Chief Nursing Executive at Stevenson Memorial Hospital.
In her previous role as Director of Clinical Services, Lynn provided strategic and operational leadership across key areas including Emergency, Perioperative, and Ambulatory Services. She is known for her collaborative approach, fostering high-performing teams and supporting staff in delivering safe, compassionate, and efficient care to the communities Stevenson serves.
Throughout her career, Lynn has demonstrated a deep commitment to nursing excellence, quality improvement, and patient experience. She is passionate about empowering healthcare teams and advancing clinical practices that support positive outcomes for patients and families.
Lynn will continue in her interim role until the arrival of Marnie Lightfoot, who will join Stevenson Memorial Hospital as Vice President, Clinical Services and Chief Nursing Executive on April 27, 2026.
Dr. Roger Musa
Chief of Staff
Dr. Musa left Ontario in 2001 to pursue a career in medicine. He became the Medical Director at AultmanNow Urgent Walk-In Clinic in Ohio and has since spent a majority of his medical career in Ohio at Aultman Hospital.
He became a Hospitalist in 2008 and has advanced his career to hold positions such as Program Director, Family Medicine Residency Program, Vice Chair of the Department of Inpatient Medicine, and most recently, Executive Director of Medical Education.
Dr. Musa became a Diversity, Equity and Inclusion Consultant at Aultman Hospital and has an extensive educational background. He is a member of the Ohio Academy of Family Physicians, Physician Delegate to the American Academy of Family Physicians and is a Clinical Associate Professor at Northeast Ohio Medical University.
He has been recognized for his contributions to education and in medicine, having been awarded the Medical Staff Service Award in 2023 and Faculty Teacher of the Year Award, three years in a row from 2010-12, among many other awards and accomplishments.
Martin Mazza
Vice President, Corporate Services & Chief Financial Officer
Martin has extensive experience in the health care sector as a financial and operational executive, having worked as a VP of Corporate Services and Chief Financial Officer at Collingwood General & Marine Hospital, Grey Bruce Health Services and Brockville General Hospital, among others.
His experience also includes the oversight of the redevelopment of a new hospital, strategy development pertaining to operating budgets and has experience overall in small/medium hospitals in the province.
Martin has a Master of Business Administration (MBA) from York University, is a Chartered Professional Accountant and has completed the Advanced Health Leadership program through the University of Toronto’s Rotman School of Management.