Marco A. Araneda, M.D. specializes in medical oncology. He is board certified in internal medicine and medical oncology. Dr. Araneda has special interests in breast cancer, hematologic malignancies, and molecular targeted therapy. Dedicated to the continued enrichment of his community, Dr. Araneda provides a question-and-answer health column for a community publication and is a clinical instructor at the Regional Academic Health Center – a lower Rio Grande Valley extension campus of the University of Texas Health Science Center at San Antonio.