Dr. David Theiss, a Lee's Summit High School graduate, grew up on his family farm in Lee's Summit. He graduated from the University of Missouri College of Veterinary Medicine in 1979 and joined the Lee's Summit Animal Hospital that same year. He is the senior member of small animal practice, with interest in small animal medicine, ultrasound, and surgery. Dr. Theiss and his wife Pam have one son and two grandchildren.