Stacey came to Morgantown from OhioHealth, where she served as chief operating officer of Riverside Methodist Hospital in Columbus. During her time at OhioHealth, she also served as chief operating officer and president of Grant Medical Center in Columbus and as vice president of specialty services for OhioHealth Physicians Group. Prior to that, Armstrong spent more than five years at UPMC in Pittsburgh, where she served as vice president of operations for UPMC Passavant, vice president of ambulatory care for UPMC Presbyterian-Shadyside, and executive director of laboratories at UPMC Presbyterian-Shadyside. She received her undergraduate degree from the Indiana University School of Medicine and her Master of Business Administration degree from Franklin University in Columbus.