One of North Park's Vietnamese-speaking dental providers, Dr. Timothy Q. Tien, DDS practices at 3531 El Cajon Blvd with a Doctor of Dental Surgery from Loma Linda University School of Dentistry. Patients requiring orthodontic evaluation or braces coordinate through Western Dental & Orthodontics on University Ave. The office delivers general-practice dentistry including preventive cleanings, composite and amalgam restorations, and single-tooth extractions. Post-procedure prescriptions for antibiotics and analgesics fill at CVS on University Ave. The practice handles complex multi-quadrant restorative cases combining crown preparation, bridge work, and extraction sequencing across staged appointments.