Board of Directors

Executive

Princess is a lawyer in Toronto with a growing interest and practice in broad public law areas, appellate litigation, and governance grounded in social justice and human rights. Prior to law, she worked the community health and affordable housing sectors in Toronto and Windsor, and continues to be engaged in the harm reduction field. Princess holds a Juris Doctor and Honours Bachelor of Social Work from the University of Windsor, and a Professional Certificate in Public Policy Analysis from York University.

Amanda is the Clinical Leader Manager of the outpatient Women’s Health Care Centre and Pediatric Clinic at St. Michael’s Hospital. She holds a Bachelor of Social Work from the University of Waterloo and a Master of Social Work from York University. As a passionate advocate for harm reduction frameworks and equitable access to healthcare for all, Amanda joined the Board in April 2021. Amanda currently sits on the Board of Directors’ governance, finance, and nomination committees.

Board Members

Clarke holds a Master of Public Health from the UK and an Honours Bachelor of Science from the University of Toronto. Her skill set enables her to practice the key population health principles: health promotion, health protection and disease prevention. Her interest in public health drives her to support the development of strong organizational partnerships. Through collaboration, she believes closing the health inequity gap is possible. Clarke endeavors to improve health outcomes, across all socioeconomic backgrounds, and is keen on being part of a solution. She is an elected board member and currently serves on the Strategic Steering Committee.

Usman is a leader with over 15 years of experience across healthcare, public policy, and the life sciences sector. His work focuses on systems-level strategy and chronic disease management, with a dedicated emphasis on improving outcomes for equity-deserving populations. Usman holds a Master of Business Administration from Northwestern and York Universities (Kellogg-Schulich), a Master of Public Health from the University of Saskatchewan, and an Honours Bachelor of Science from the University of Toronto. Outside of his professional roles, he is an active volunteer and soccer enthusiast who enjoys life in Toronto with his family.

Jann is a nurse and retired public health nursing leader with over 35 years of experience.  She has worked in many areas of public health including Tuberculosis Control, AIDS Prevention, and Mental Health and Addiction. She also worked extensively behind the scenes to help bring supervised injection services to Toronto. She is currently a Ph.D. Candidate at OISE, the University of Toronto, and her research is focused on how there can be a more humane and holistic response to the drug crisis in Canada. A lover of dogs, she is also fostering a future Dog Guide. Jann has been a member of the Street Health Board since 2021.

Mary received a B.A. in political science from U. of T. and a law degree from Osgoode Hall Law School. As a lawyer she practiced mainly in the area of housing and what was then known as “poverty law”.  She was the Director of Parkdale Community Legal Services for many years, was a part time instructor on housing and residential tenancy law at Osgoode Hall Law School, and co-chaired for the Ontario government a committee on the future of rental housing.   As a lawyer she appeared before all levels of court, particularly on rental housing issues, including the Ontario Court of Appeal and the Supreme Court of Canada.
In 1987 she was appointed a judge of the Ontario Court of Justice. As a judge she sat frequently in the “specialty courts” – Drug Treatment, Mental Health and Indigenous peoples.”  She was the lead judge for many years in the Drug Treatment Court and was an integral part of its shift to a more harm reduction focus.  Just prior to her retirement in 2023 she was the judge responsible for the establishment of the Downtown Toronto Justice Centre in Moss Park. In the early nineties Mary took a break from her role as a judge when she was appointed the Deputy Attorney General for Ontario.  She then returned to the bench.
Throughout her career she sat on many boards, and was a speaker at many events on the topic of the role of the criminal justice system and its treatment of offenders with problematic substance use. She taught judges and others, in many countries including Ethiopia and Mexico, about Drug Treatment Courts.
Greg Gibb brings over 20 years of experience in community governance, leadership, and advocacy to the Street Health Board of Directors. As a founding member and Director of Communications for the Condo Owners Association (COA), Greg collaborated with all levels of government to advocate for protections of condo owners in Ontario. He also served as a community liaison during the Waterfront Toronto Queens Quay Revitalization, representing residents of the Waterclub Condominiums. Greg recently completed advanced certifications in Governance, Insurance, and Reserve Fund Fundamentals through the Canadian Condominium Institute (CCI).

Tiina Ranta is the current Assistant Director of Well-being at York University, bringing over a decade of nursing expertise in mental health, harm reduction, and strategic leadership. Tiina joined the Board of Directors at Street Health in 2024. Her commitment to and passion in working with inner-city populations and individuals experiencing homelessness is clear. Pursuing her Doctor of Philosophy in Nursing, her research pursuits focus on Safe Consumption Sites with an aim to improve community integration and create more accepting spaces for people who use substances. Her dedication to addressing pressing issues within healthcare research underscores her passion for advocating for people who are experiencing barriers in accessing care. Tiina brings forward her strengths in strategic visioning, collaboration, and compassion as an invaluable asset to Street Health as they continue to make a meaningful impact in the community.

Executive Director

Based in Toronto, Christina has over 20 years of social work and leadership experience. She began her career working in community mental health as an addiction counsellor, before moving into hospital leadership working in a multidisciplinary, unionized environment with a focus on care for older adults. For the past 10 years Christina has worked in the regulatory sector where her focus was on policy development, governance, risk management, and public protection.

Christina is passionate about collaborative, transparent, and relationship-driven leadership. She is thrilled to have the opportunity to return to her professional roots and apply the knowledge and experience she has gained to support Street Health and work with other community partners to improve the wellbeing of community members through advocacy and the promotion of social justice, low barrier care and harm reduction approaches.