Dr. Sadler is an emeritus Professor in the Department of Surgery at the University of California San Diego School of Medicine and the past Associate Director for Community Outreach at the UCSD Moores Cancer Center. She is also on the faculty of the SDSU/UCSD Joint Doctoral Program in Clinical Psychology.
The central focus of Dr. Sadler's research is on developing and testing programs that can reduce health disparities among diverse communities. Such programs focus on cancer prevention, early detection, and coping, as well as achieving better representation of diverse communities in clinical trials research. Working within community-campus partnerships, she has collaborated with the African American, Asian American, Deaf, Hispanic, Native American, and Pacific Islander communities.