He also served as the chairman of the board of directors of Santa Marta Hospital in Los Angeles, California.
Afterwards, he worked as a medical director for the staff of Saint Vincent Hospital and a member of Good Samaritan Hospital, and later the assistant clinical professor of surgery of the California College of Medicine - Irvine.
He was a former member of the board of visitors of the United States Naval Academy and a former member of the board of directors of Molina Medical Group and the Reserve Orange County Sheriffs Professional Services.
Del Junco was a member of the Board of Regents of the University of California from 1985 until 1997.
Tirso del Junco died in Orange County, California, on September 4, 2023, at the age of 98.