Hooman Sadri, MD, PhD, assistant professor, is an andrologist who specializes in male reproductive medicine and directs the male fertility research program. He serves as MD director for the American Society of Andrology board of directors and is active in related societies. His expertise includes electro-ejaculation, vasectomy reversal, and microsurgical testicular sperm extractions. His expertise is in Klinefelter syndrome, other genetic causes of hypogonadism, and spinal cord injury infertility. He established and also directs the spermatogonia stem cell bank for fertility preservation of high-risk boys and men, one of the world’s largest bio-banking systems.