Dr. Zachary Freer practices endodontics in Chula Vista at San Diego Center for Endodontics, located at 273 Church Avenue, a root canal specialty practice serving the South Bay for over 30 years. General dentists across the Chula Vista corridor, including Dental Group Palomar, refer complex endodontic cases to the practice for root canal therapy, retreatment, and apical microsurgery under cone beam computed tomography guidance. A Harvard School of Dental Medicine graduate with endodontic specialty training at UCLA completed in 2017, the practice holds membership in the American Association of Endodontists and the California State Association of Endodontists. The 2023 practice modernization introduced advanced 3D CBCT imaging, digital radiography, and surgical operating microscopes to improve diagnostic accuracy and treatment precision for calcified canals and complex root anatomy. Periodontal-endodontic lesions requiring coordinated treatment planning are managed in consultation with specialists such as Chula Vista Periodontics, addressing the intersection of pulpal infection and periodontal disease in the same tooth. The surgical suite performs apicoectomy with retrograde MTA fill placement, intentional replantation, and hemisection procedures using piezoelectric ultrasonic instrumentation for precise osteotomy cuts.