Dr. Pacheco graduated from the School of Dentistry at the National Autonomous University of Mexico (UNAM) in 1975. He received his Master’s Degree in Morphology in 1977 from the School of Medicine at the National Polytechnic Institute. He served as the dean of the Oral Pathology department at the School of Dentistry of the National School of Professional Studies for five years starting in 1980 and earned his DDS degree from the State Board Examination at Loma Linda University in 1990. Dr. Pacheco completed a program in cosmetic dentistry at the UCLA Dental School in 1996 and an endodontics program in 1998.