Dr. Deffer graduated from Texas Tech University in 1986, completed his orthopaedic residency at Fitzsimons Army Medical Center in 1993 and completed a Fellowship in Hand Surgery at Walter Reed Army Medical Center in 1994. He joined NWIA Bone, Joint and Sports Surgeons in 1996. Dr. Deffer sees patients in Spencer, Storm Lake and Spirit Lake. He is affiliated with Northwest Iowa Bone, Joint & Sports Surgeons P.c.We have the most experienced orthopedic surgeons in Northwest Iowa Bone, Joint & Sports, working with the area’s most advanced technology. We are able to offer specialized care in orthopedic surgery, total joint replacement, sports medicine, arthroscopic surgery, hand surgery, foot surgery, and fracture treatment.