He attended The Ohio State University and earned both his undergraduate and veterinary degree in 1992. After graduation, Jandrey accepted an internship at a small animal private specialty practice in Los Angeles. He continued his veterinary career as an associate in private general practice, followed by a residency in Northern California before becoming director of emergency services for a specialty hospital in Plymouth Meeting, Pa. Jandrey began his academic career as a lecturer at the Veterinary Hospital of the University of Pennsylvania and returned to Davis in 1999. Jandrey was board certified by the American College of Veterinary Medicine specializing in Emergency and Critical Care in 2001.