Sandy began working at Medley Pharmacy, Inc. in 1984 while in high school. After receiving her Bachelor of Science degree at St. Louis College of Pharmacy in 1990, she returned to the Medley Pharmacy, Inc. family as a staff pharmacist. While working at the pharmacy, she received her Doctor of Pharmacy degree from the University of Arkansas for Medical Sciences. In 2005, Dr. Mitchell proudly became the owner of Medley Pharmacy, Inc. fulfilling a lifelong dream of becoming an entrepreneur and pharmacy owner.