Dr. Gregory Allen, a Washington state native, graduated from Washington University School of Medicine in St. Louis in 1980. He completed his residency in diagnostic radiology at University of California at Irvine in 1984 and a fellowship in ultrasound and body imaging at St. Paul's Hospital in Vancouver, BC, in 1988. Dr. Allen was a radiologist with the U.S. Naval Reserve from 1984 to 1987. He is board certified in diagnostic radiology from the American Board of Radiology.