John Tracy Center | 971 followers on LinkedIn. The leading diagnostic and education center for young children with hearing loss. | John Tracy Center non-profit whose mission is to provide parent-centered services to young children with hearing loss, offering hope, guidance, and encouragement. Our goals are to give these children the speech, language, and listening skills to participate fully in their school, community, and life, and to give their parents the knowledge and capabilities to mentor and participate fully in the process. We are a California-based non-for-profit 501C3 organization, established since 1943 by Louise Treadwell Tracy, wife of actor Spencer Tracy, and named after their son John who was born deaf.