Chief, Pain Medicine
Department of Anesthesiology and Pain Medicine
Roswell Park Cancer Institute

Professor of Anesthesiology
University at Buffalo
School of Medicine and Biomedical Sciences

Dr. Oscar A. de Leon-Casasola joined the staff of Roswell Park Cancer Institute in 1990, as an Anesthesiologist in the Department of Anesthesiology and Pain Medicine and was appointed Chief of Pain Medicine in 1999. He also is a Professor of Anesthesiology at the School of Medicine and Biomedical Sciences at the University at Buffalo (UB).

Dr. de Leon-Casasola earned his medical degree at the Universidad de San Carlos de Guatemala, Guatemala City, Guatemala, in 1982, and completed residency training in General Surgery in 1986 at the State University of New York Downstate-Brooklyn, NY, and in Anesthesiology in 1989 at UB. He is licensed in New York State and is board-certified in Anesthesiology, Critical Care Medicine and Pain Medicine.

Dr. de Leon-Casasola’s research interests include advances in analgesic therapy; physiology and pharmacology of epidural opioids, perioperative surgical outcomes, thoracic and cardiac anesthesia, acute pain control and chronic cancer pain.

He is a member of the American Society of Regional Anesthesia, American Society of Anesthesiologists, New York State Society of Anesthesiologists, American Pain Society, and Eastern Pain Association.

Dr. de Leon-Casasola has authored or co-authored 115 journal articles, abstracts and book chapters. He serves as an Associate Editor for the Latin American Journal of Pain, Argentinian Journal of Anesthesiology, The Journal of the Spanish Society of Pain, and the Clinical Journal of Pain. He also is Editor-in-Chief of Techniques in Regional Anesthesia and Pain Management. Dr. de Leon-Casasola was listed as an exceptional practitioner by Good Housekeeping Magazine in 2003.