Ogawa Gen-ichi graduated from Medical Department of Hokkaido University. Served successively as assistant, lecturer and assistant professor at his alma mater. Studied for one year in Germany (from 1935).
After returning home served as lecturer at Provisional Medical Department attached to the Hokkaido University and then became professor of Obstetrics Department of Medical Faculty of Hokkaido University and director of Maternity School attached to the same university (since 1943). Holded additional post of director of Japan Obstetrics Society.