Dr McCarthy received his DVM from Colorado State University in 1969, became Board Certified by the American College of Veterinary Surgeons in 1978, and earned a PhD in surgery from Colorado State University in 1981. He currently practices at VetMIST in Beaverton, Oregon. Dr McCarthy performed his first endoscopy in 1982 and since that time has performed over 5000 endoscopic procedures, and has developed many endoscopic techniques that are becoming commonplace in small animal practice today. Dr McCarthy has published numerous articles on small animal endoscopy, has lectured nationally and internationally, and published a major textbook on small animal endoscopy.