As a young professional he was very much impressed by the social and political problems in his country and was inclined towards social realism. In 1970 the City of Santo Domingo commissioned a large outdoor  fresco mural titled "Education". In the late 70’s he worked with esoteric themes, principally in blue. He exhibited these works in 1979 in a one man show  at  Centro de Arte Cándido Bidó. During this period he also participated in various collective shows in the Dominican Republic.

Between 1982 and 1992 Medina worked on commissioned paintings and drawings for the Commemoration of the Discovery and Evangelization of America and the 150^th Anniversary of the Dominican Republic. These works are found in the Cathedral of Santo Domingo, the Museum of  Casas Reales, Patronato de la Ciudad Colonial and the National Pantheon. During this period he presented two individual shows: "Historic Moments" ( 1989) in the Museum of  Casas Reales and "Chronicles of America" ( 1992) in the headquarters of the Dominican Commission for the Celebration of the Fifth Centenary of the Discovery and Evangelization of America. He is author of the drawings for the multi exposition commemorating the 150^th Anniversary of the Dominican Republic, "The National Independence, The Process…" in form of large posters, published in book form.

After an intense period of work in a traditional art style Medina felt the need to further investigate within the modern. Since 1992 he has been working in mixed media techniques, experimenting with colors, textures, effects and his elegant draftsmanship. His last exhibit titled "Euritmia" was  held in his Estudio-Pinacoteca 2003.

He has no conflict between traditional art and modern art as he feel attracted and comfortable with both. In his own words "There is no old art or new art, only good or bad art".