Our Leadership

Pamela Valentine

President and CEO


Photo of Dr. Pam Valentine

Hailing from Edmonton, Alberta, I am a proud mother of three. I enjoy cooking up a storm for a full table of family and friends and when the weather allows, I can often be found outside tending to my garden.

I am a trained research scientist who is passionate about the power of collaboration and believe that through building strong relationships, we can build stronger communities. My most recent role was with Alberta Innovates where I spent over 15 years leading innovation and change.

I am honoured and excited to go to work for Canadians impacted by MS. Together with our board, I hope to grow the impact of our efforts and ensure that we remain a strong national, bilingual organization that delivers exceptional community-based programs and drives a results-oriented research portfolio.

A more detailed biography can be found here.


Jennifer Arp

Senior Vice-President, Community


Jennifer Arp Image

The MS cause is near and dear to my heart, with my brother having been diagnosed with this unpredictable disease. Each day, I learn from him what it is like to manage and live with MS. I’m highly motivated and excited to engage with the MS community across the country and to learn about the work happening locally to bring people living with and affected by MS together. Together, we will continue to build hubs and create connections within our communities so that no one has to face MS alone.

It is a privilege to have extensive experience in both non-profit and politics. Most recently, as the Interim CEO at Big Brothers Big Sisters of Canada, a national federation of 95 member agencies, I provided leadership in building a new quality assurance program and created the organization’s first diversity, equity and inclusion action plan. As Vice-Chair and Trustee with the Toronto District School Board, I formally established the recognition of Pride Month and the Enhancing Equity Task Force.

Born in Collingwood, Ontario and raised in Kitchener, Ontario, I now reside in Toronto. Having completed a BA in Political Science and an MA in International & Intercultural Communications, I’m especially proud of my research analysing COVID-19 communications to non-English speaking communities in Toronto. My volunteering experiences include being involved in various school councils and serving on many boards, including Young People’s Theatre and the Toronto Foundation for Student Success.

Most weekends during the winter, you can find me on the slopes at Blue Mountain, having learned that this makes winter go faster! In the summer, you’ll find me on my bike or training for marathons. I look forward to seeing all of you at MS Walk and MS Bike across the country!


Benjamin Davis

Senior Vice-President, Mission



I’m proud to have held senior positions in the charitable Sector for the past 15 years. I’m deeply motivated to help others, and I’m passionate about leadership that encourages staff and volunteers to change lives for people living with disabilities. I’ve met a number of people living with MS over the years, and I’m motivated every day by their courage and resiliency. It’s with them in mind that I choose to work to make a difference.

A proud Maritimer who grew up on one of the many beautiful coasts of Nova Scotia, I have Bachelor in Kinesiology from the University of New Brunswick and a Master of Human Kinetics from the University of Windsor. When I’m not chasing my two little boys around the wonderful beaches of NS, I’m cheering hard for Canada’s Toronto Raptors.


Danielle Mandell

Vice-President, People Innovation & Volunteers

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photo of Danielle Mandell

I am passionate about people – the power of staff and volunteers – and the role they and all stakeholders play in bringing about change. I learned early on in my career that I’m a mission-driven person with a large desire to contribute my best in an organization focused on creating lasting positive social impact.

After earning a masters degree in International Human Resource Management from the University of Newcastle upon Tyne in England, I spent over 15 years gaining diverse, cross-sector executive leadership experience in organizations that ranged from providing financing and mentoring to entrepreneurs, to affordable homeownership programs, to international development. I have focused my efforts on developing people-centred programs, policies and practices that maximize the stakeholder experience.

After joining MS Canada, I quickly recognized there are many in my expanded community who are living with or affected by MS. I am both energized and humbled by both the work the organization carries out and the people who, every day, in small and large ways, advance the mission on a local, national and international stage.

I was born and raised in Toronto, and today I still really enjoy the city I call my home -- exploring different neighbourhoods within it, and spending time outside with my dog in the green spaces.


Diego Mena Martínez

Executive Director, Quebec Division


Canada has one of the highest rates of multiple sclerosis (MS) in the world. I want to contribute to making a significant impact on the quality of life of all Canadians, including Quebecers who are affected by MS. Committed to working directly with people living with and affected by MS, I know that one day, we’ll be able to say that we do not fear this disease because we will have achieved our vision of a world free of MS.

For the past 17 years, I have been working in non-profits – something that I have always wanted to do and something I am very proud of. I began my career with the Swiss government in international work and collaboration. I continued my work in Canada at the David Suzuki Foundation, the Fondation de Dr Julien, and the Canadian Cancer Society, where I headed up the Quebec team. I also spent a period of time at CREDO Consulting, which specializes in social impact. Since 2013, I have been working in health and social services in La belle province.

Originally from Ecuador and now residing in Quebec, I am proud to say that my mother wanted her children to study in French. Growing up and going to school entirely in the French-language system, I also lived in France for five years for my university studies. Additionally, I have just completed my Executive MBA at McGill-HEC.

Being true to Canada’s famous winter climate, I love seeing my 16-year-old dog enjoy a nice walk in the snow; snowshoeing with my partner; and watching the Bye Bye show with my family on New Year’s Eve!


Matt Nomura

Matt Nomura headshot

Vice-President, Programs 

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After starting my career in banking and spending 12 years with CIBC through a meaningful leadership journey, I was drawn to making an impact in our community in a different way. I spent three and a half years working in the cognitive disability sector for a leading organization specializing in employment support and research, and for six years, I served as Vice President of Strategic Investments and Community Impact at the Calgary Homeless Foundation. There, I led the development of our data and analytics transformation, as well as evaluation and learning initiatives. Together with our team and community partners, we envisioned a way to understand our shared impact and learn together, benefiting the lives of those we serve.

Having attained a Master’s in Business (MBA) and a certificate in Executive Leadership and Project Management, my proudest moment was completing my thesis, which examined how leadership ideology influences the psychological effects of emotional labor within an organization. I grew up farming and playing hockey in a small town in Saskatchewan and today I call Calgary, Alberta home. I’m a huge hockey fan and I spend immense amounts of time watching it, with my favourite team being the Pittsburgh Penguins. I also love gaming!

With a close friend living with multiple sclerosis, I am happy to have landed at MS Canada where I can contribute to creating a world free of MS! 

Pam Seto

Vice-President, Digital Strategy, Marketing and Communications

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Pam Seto image

I'm a passionate and inspired communicator committed to the improvement of relatable, relevant and meaningful communication between human beings.

Originally from Alberta, and starting my journey with MS Canada in that province, this University of Alberta alumni relocated to Ontario to continue my work for a cause near and dear to my heart. An evangelist of innovative technologies that make social impact, I'm honoured to serve as a digital, marketing, and communications strategist in our mission to connect and empower the MS community to create positive change.

Both a nerd and geek at heart, curiosity is a main staple in my way of living. I do a lot of listening, and I ask a lot of questions!


Shawn Slack

Vice-President, Corporate Services



As a finance, technology and digital transformation leader with over 25 years of experience, I am happy to join MS Canada with a deep appreciation for a connected MS community. I am encouraged by the support of the community and how technology has helped to bridge the gap of in-person and the online MS Community.

I've held several leadership roles in the public sector in business, administration and information technology -- spending the last eleven years as Chief Information Officer for the City of Mississauga. I’ve also held Board positions with the PSBN Innovation Alliance and Living Arts Centre; and have been the Past President of Municipal Service Delivery Officials.

Originally from Burlington, Ontario, I completed my MBA at Athabasca University. Having grown up in a hockey family, I’m an avid and hopeful Maple Leafs fan, and enjoy all of Canada’s seasons and the outdoors.

I’ve seen the impacts of MS on a young mother within our family, but I’ve also seen the resilience and impacts of having both family and MS Society supports. I am very committed towards a world free of MS.