Senator Hermogenes Concepcion was born in Cabanatuan, Nueva Ecija on April 19, 1887 to Angel Concepcion and Angela Sombillo. He was a product of both public and private schools. He obtained his degree as Bachelor of Laws in 1915.
He was elected member of the House of Representatives from Nueva Ecija in1922, and again in 1928. In the election of 1934, he was elected senator from the Third Senatorial District comprising Tarlac, Nueva Ecija, Pampanga and Bulacan, serving as such until the legislature gave way to the National Assembly in 1935.