Massoumi Dental Corporation maintains a Chula Vista dentistry practice on Third Avenue in the Third Avenue Village district, operating under the Great Dental Group name at this location since the late 1990s. The corporation's managing dentist completed advanced dental sciences at the University of Brussels before earning a DDS from Oregon Health Sciences University in 1992 and holds concurrent surgical privileges as a senior staff member at Rady Children's Hospital, a dual-track clinical role within the same South Bay medical network that includes Sharp Chula Vista Medical Center. The Third Avenue practice provides adult general dentistry alongside endodontic root-canal therapy performed by in-house specialists. A Dental Board of California-licensed clinical training center operated by the corporation offers continuing-education coursework for affiliated dentists across its multi-location network. Post-procedure prescriptions from the Third Avenue office are coordinated with neighborhood pharmacies such as Sunrise Pharmacy for antibiotics, analgesics, and chlorhexidine rinse dispensing. Restorative scope at the location includes composite bonding, porcelain crown fabrication, and fixed-bridge prosthetics using CAD/CAM digital impression technology.