Dr. Casillas graduated from the University of California, Los Angeles David Geffen School of Medicine in 1987. He works in El Paso, TX and 1 other location and specializes in Allergy & Immunology. Dr. Casillas is affiliated with Hospitals Of Providence Memorial Campus.
Sunnyslope Elementary School Hollister CA 1980-1983, Fremont Elementary School Hollister CA 1983-1984, R.O. Hardin Elementary School Hollister CA 1984-1986, Rancho San Justo Middle School Hollister CA 1986-1989