Dr. Klein is a neurologist with fellowship training in both pain medicine and addiction medicine. She practiced pain management in the Portland and Vancouver, WA region from 2011 to 2015. She has provided medical services for the treatment of substance use disorders at CODA since 2015 and became medical director of CODA in 2016. She also teaches medical students, residents, and addiction medicine fellows at Oregon Health & Science University. Dr. Klein received her undergraduate degree from Columbia University and her medical degree from the University of Massachusetts Medical School.