Dr. Jaramillo was in endodontic practice from 1990 to 2004 and started doing faculty practice in 2004 at the Oral Health Center, Loma Linda Endodontic and Loma Linda Faculty dental office. Dr. Jaramillo is a former clinical assistant professor of endodontics at the University of Southern California (USC) in Los Angeles. He was an associate professor at Loma Linda University School of Dentistry in California, where he served as clinic director of endodontics and endodontic course director for the International Dentist Program, and as a researcher at the Center for Dental Research.