Dr. David Campbell owns Century Dental Centers, which include five dental offices, in Southern California. He still enjoys practicing wet fingered dentistry a few days each month. 

Dr. Campbell also serves as Dental Director for the Los Angeles Christian Health Centers – Joshua House which provides health services to the homeless with the Los Angeles Mission. The dental clinic was started by the Korean American Christian Dental Mission. It’s a Federally Qualified Health Center that provides medical care, psychological counseling, and social services for a whole person approach to helping the homeless with their multi-factored struggles in a Medical Home Model.

As associate professor at the Herman Ostrow Dental School at University of Southern California, he serves at the extramural dental clinics that USC uses in the Union Rescue Mission and the John Wesley Health Center on skid row of downtown Los Angeles.  In addition to helping the students with their rotations, he was instrumental in helping USC expand services to add the facility across the street at the John Wesley Health Center. Both are about a block from the LA Christian Health Center in the worst skid row community of downtown Los Angeles. 
He is also the Dental Director at World Impact Watt’s Dental Center and the Catholic Worker’s Hospitality Kitchen, both of which are only open two days a month, currently.