Born in Mexico City. Received his medical education at Military Medical School. Received his training in general surgery and pediatrics for six years at the Military Hospital Mexico.
Trained in pediatric surgery at Children’s Hospital Boston for 3 years. Upon returning to Mexico, he was the Chief of Surgery for the National Institute of Pediatrics for thirteen and a half years.
In 1980 performed the first posterior sagittal operation to repair anorectal malformations. In 1982 performed the first posterior sagittal approach to repair a cloaca.
Chief of Surgery at Schneider Children’s Hospital in Long Island, New York for 20 years. (1985-2005).
Created the first Multidisciplinary Colorectal Center for Children at Cincinnati Children’s hospital (2005-2015).
As of February 1, 2016, Dr. Peña holds the position of Director of the International Center for Colorectal and Urogenital care at Children’s Hospital Colorado and Professor of Surgery University of Colorado. His data base includes information related with over 3,000 cases operated by him and over 5,000 cases medically managed by him after they were operated at other institutions.
Dr. Peña has been Visiting Professor and operated on children in 5 continents, 534 times. He has published over 200 articles in peer review journals of international literature and more than 80 chapters of textbooks.
He is an Honorary member of the Royal College of Surgeons of England and Scotland, and Associations of Pediatric Surgery of Austria, Brazil, Cuba, Greek, Colombia, Ecuador, Egypt, Spain, Israel, Italy, Poland, South Africa and Yugoslavia. In addition, he has been the recipient of the following medals or honours:
- WILLIAM LADD Medal, American Academy of Pediatrics – 2008
- COE Medal, Pacific Association of Pediatric Surgeons – 2002
- REHBEIN Medal, European Association of Pediatric Surgeons – 2015
- KAFKA Medal, Czech Association of Pediatric Surgeons – 2013
- ROBERT E. GROSS Award, University of Texas – 1985
- ROBERT E. GROSS Medal, American Pediatric Surgical Association – 2018