Dr. Isaac González Martínez (July 8, 1871 – April 20, 1954) was the first Puerto Rican urologist, and a pioneer in the fight against cancer throughout the island. Dr. González Martínez conducted many investigations and experiments in parasitology, bilharzia, leprosy and typhoid fever. Dr. González Martínez and Dr. Bailey K. Ashford were the founders of the first commission in Puerto Rico to study the causes of anemia. In 1914, he was named director of the biological laboratory of the sanitation service of Puerto Rico. In 1935, Dr. González Martínez founded The Puerto Rican League against Cancer. He also promoted the construction of Puerto Rico's first hospital specializing in oncology.