The document summarizes the CTSI Mentor Development Program at the University of California, San Francisco. The program provides 10 case-based seminars over 5 months to train mid-career and early senior researchers to become skilled mentors. It has trained over 60 mentors since 2007. The program also holds annual graduate retreats and has trained mentors across the US and internationally. The goal is to build a community of mentoring excellence and ensure a robust pipeline of skilled academic mentors.