Dr. Guu is a licensed Internal Medicine in CA. Graduated in 1995. Medical degree obtained from Drexel Medical College of Pennsylvania. Completed residency training at St. Mary Medical Center. Currently practices at Dr. Ryan Tran and Dr. Huan Guu (Dr. Ryan Tran and Dr. Huan Guu), located at 15333 Culver Dr, Irvine, CA 92604. Dr. Guu specializes in internal medicine and primary care.. In addition to English, Dr. Guu speaks Mandarin.