Sullivan + Associates Clinical Psychology

Sullivan + Associates Clinical Psychology is a full-service psychology clinic located in Thunder Bay, Ontario. It was founded in 2007 by co-founders, Dr. Jennifer Sullivan and Trevor Sullivan, and has since grown to 65 team members.

During the past 18 years, we have provided psychological assessment and psychotherapy/counselling services to over 40,000 children, adolescents and adults.

Our clinicians our proud to serve the people of Ontario and we have provided over 280,000 appointments to date. We invite you to learn more about the origin of our clinic through to the present day.

Our Clinic

Making a Difference Today

The early days of our clinic goes as far back as March 2003, when co-founder, Trevor Sullivan, began a small private practice in his home called Sullivan Counselling Services, working evenings and Saturdays. His wife, business partner and co-founder, Dr. Jennifer Sullivan, began her private practice in 2005 in a separate office in their family home.

Our passion to help others inspired us to open a small private practice in our home in 2007. With only a modest ad in the yellow pages and positive word-of-mouth advertising, our tiny practice rapidly grew, requiring us to relocate to a larger office building within a year. 

Through a combination of many factors, including a strong commitment to our values of honesty, integrity, and respect, our passion for excellence, and our warm, down-to-earth style, our practice continued to grow, and we responded by adding more professionals, more support staff, and more and more offices!

Eighteen years later, we have achieved our dream of helping people in our community (and throughout the province) to overcome their difficulties and live happier lives, through the development of a modern, professional, full-service psychology clinic! 

~Jennifer & Trevor Sullivan