Senior Leadership Team

Karen Eisler 

Chief Executive Officer

Karen is the Chief Executive Officer at CTN. In this role, she is responsible for the overall management and direction of the network. A champion of innovation, her leadership focuses on creating an inclusive culture that embraces change and continuous improvement, while keeping children, youth and families at the centre of decisions.

Karen has over 25 years of leadership experience within the Government of Ontario.  Most recently, she was the Director, Central Region for the Ministry of Children, Community and Social Services, where she managed over 200 staff and provided leadership and oversight to an expansive service delivery system for children, youth, adults and families. 

Karen is an authentic and collaborative leader with a deep understanding of the social services system in Ontario. She brings exceptional communication and interpersonal skills, along with strong business intelligence and political acumen to the network.

In addition to her professional accomplishments, Karen is married and a proud mother of two children. In her spare time, she enjoys biking, skiing and researching her next travel adventure.

Karen holds an Honours Bachelor of Arts Degree in Business Management from Ryerson University and has participated in a number of professional education programs, including the Public Executive Program at Queen's University

Karen Dillon
Director, Autism Program and Service Planning

Karen is the Director of Autism Program and Service Planning at CTN. In this role, she is responsible for CTN’s autism services, medical and diagnostic services, psychology services and coordinated service planning. Karen has worked with individuals and families of children and youth with disabilities and developmental needs for almost three decades.

Karen joined CTN in 2015 and prior to that was in a CTN hosted role with Markham Stouffville Hospital. Most recently, she was a manager on the CTN Programs and Services team. She has completed two secondments with the Ministry of Children, Community and Social Services to support the redesign of the Ontario Autism Program has provided leadership to many local, regional, and provincial initiatives including the autism spectrum disorder diagnostic hubs.  

Outside of work, Karen loves spending as much time as possible outdoors at her cottage, hiking, and kayaking.   
Karen has an undergraduate and Master’s of Social Work Degree from York University and has additional training in Solution Focused Counselling, Mindful Leadership and Motivating Teams.    


Carolyn Gravelle - CPA, CGA
Director, Corporate Services

Carolyn is the Director of Corporate Services at CTN. In this role Carolyn leads the finance, human resource, information technology, information management and evaluation functions at CTN, working closely with CTN’s shared service partner, Oak Valley Health.
Carolyn has enjoyed working in the not-for-profit sector over the past 14 years, and was previously the Director of Finance with the North Simcoe Muskoka Community Care Access Centre before joining CTN in 2012. As a Chartered Professional Accountant, Carolyn has an affinity for numbers and enjoys expanding her knowledge base to include human resource, information technology and information management expertise.
Carolyn is also a long-term volunteer treasurer with the Bracebridge United Church. When she’s not working, you can often find Carolyn on the water in her kayak.
She holds a Bachelor of Accounting Degree from the University of Calgary and compled the University of Guelph's MA (Leadership) graduate degree.


Anchel Krishna
Director, Strategy, Communication and Engagement

Anchel is the Director of Strategy, Communication and Engagement for CTN and responsible for strategic and operational planning, internal and external communications and engagement strategies with key CTN stakeholder groups.
Anchel has more than 15 years of experience in corporate communications in the private sector and joined CTN in 2013 as Communications Manager. Her previous roles include progressive management positions with the Hudson’s Bay Company, CIBC Mellon and Purdue Pharma Canada. Her areas of specialty include strategic and organizational communications, crisis communications, writing and social media.  
Anchel is also very familiar with CTN through her lived experience as a parent. Her oldest daughter has cerebral palsy and has been receiving services from CTN through partner agencies for the last several years. In her spare time she writes for national and international parenting publications.
She has a Bachelor of Journalism (Honours) from Ryerson University and has completed the Strategic Communication certificate from the University of Toronto.

Susan Nall, DSW, RN, B.Sc.N, MBA
Director, Performance and Network Integration


Sue is the Director, Performance and Network Integration at CTN. In her role with CTN, she provides leadership for CTN’s quality and performance initiatives, health records and privacy. She is also responsible for leading CTN’s workplace and service modernization in addition to our pandemic response. Sue comes to CTN having recently served as the Clinical Manager, Developmental Pediatrics and Rehabilitation at McMaster Children’s Hospital (MCH), Hamilton Health Sciences, where she was responsible for the operational excellence of the Children’s Treatment Centre.  

Sue is passionate about systems transformation and led the first Indigenous health partnership between MCH and de dwa da dehs nye Aboriginal Health Centres in Hamilton, Brant and Niagara, delivering on her commitment to equity, diversity and inclusion. During the pandemic, Sue led the specialized vaccine clinic for youth ages 12-18 aimed at ensuring accessibility for children with communication, functional or behavioural needs.

Sue is the Chair for the Empowered Kids Ontario Leadership Council and actively participates on provincial steering committees and advisory panels aimed at improving system performance. In her spare time, Sue is a foodie, a traveler and an avid reader. Sue is an active community partner and provides corporate governance on two boards of directors: Alternatives for Youth in Hamilton and Empowered Kids Ontario provincially.

Sue is a Developmental Service Worker and practitioner dedicated to supporting the lives of children and families with developmental disabilities. She is a Registered Nurse with the College of Nurses of Ontario for over 20 years, and has her Master’s degree in Business Administration.


Mary Riggin Springstead - M.Cl.Sc., CCC-SLP, Reg. CASLPO
Director, Programs and Services

Mary is the Director of Programs and Services for CTN and responsible for all of CTN’s clinical, rehabilitation and specialized services.
Joining CTN in 2014, Mary previously spent 30 years with the Royal Victoria Regional Health Centre, a CTN partner organization, initially in a clinical speech-language pathology role followed by progressive leadership positions. Most recently she was the Manager, Child and Youth Outpatient Services and responsible for preschool speech and language, occupational therapy and physiotherapy services, along with several additional rehabilitation and medical paediatric programs. Mary was awarded the 2013 Royal Victoria Regional Health Centre’s Board of Director’s Award of Excellence in the Leadership category. Mary was also involved in the original planning and implementation of CTN and has always been a strong advocate for the network and ensuring that children with disabilities and developmental needs have access to quality services and inclusive communities to enable full participation in all aspects of life.

Mary enjoys winning Scrabble tournaments and reading non-fiction books in her spare time.
She holds a Master’s Degree in Speech-Language Pathology and an undergraduate degree in Communicative Disorders, both from the University of Western Ontario.