San Diego International Medical Center in Chula Vista's Third Avenue corridor houses the practice of Miguel J. Castrejon, MD, at the Centre Medical Plaza II building on 855 Third Avenue. Dual board specialization in physical medicine and rehabilitation alongside internal medicine — rooted in a 1987 medical degree from Universidad Autónoma de Guadalajara — equips the practice for both chronic disease management and neuromusculoskeletal evaluation, a combined scope that parallels the spinal rehabilitation work at Kohler Chiropractic. Bilingual English-Spanish consultations serve the western Chula Vista population from the Class A medical office tower adjacent to Scripps Mercy Hospital Chula Vista on Third Avenue. Chronic pain protocols and EMG nerve conduction studies performed in-office generate prescription workflows coordinated with nearby dispensaries including Ralphs Pharmacy for analgesic and anti-inflammatory fill services. The practice's physical medicine scope covers transcutaneous electrical nerve stimulation, joint injection therapy, and functional capacity evaluation for disability and workers' compensation cases requiring return-to-work clearance documentation.