Dr. Johnston received her Doctorate of Veterinary Medicine from Tufts University in 2005. After graduation, she completed a one year internship in small animal medicine, emergency medicine and surgery at the Southern Arizona Veterinary Specialty & Emergency Center in Tucson, Arizona. Dr. Johnston subsequently completed her 3 year residency at Cornell University where she also worked as a clinical instructor. Her special interests are respiratory disease, renal disease, hematology, & hepatic disease. Dr. Johnston joined VMS of DFW in September 2013 offering Saturday internal medicine appointments and emergency consults. In her spare time she enjoys reading, running, and spending time with her husband and their pets.