Dr. M Tarek Hussasein, MD provides family medicine in Chula Vista from Gateway Comprehensive Medical Group at 1323 Third Avenue, serving patients across the southern Third Avenue corridor in the 91911 zip code. The practice coordinates prescription management for chronic conditions with neighborhood dispensaries including Sunrise Pharmacy, ensuring continuity between office-based treatment plans and medication adherence. Gateway Comprehensive Medical Group operates as a multi-specialty group with family medicine, pediatrics, and gastroenterology services under one roof, offering bilingual clinical capacity along the Third Avenue medical corridor south of Palomar Street. After-hours and acute-onset cases route to Sharp Rees-Stealy Chula Vista Urgent Care, maintaining continuity of care for patients who need evaluation outside scheduled appointment windows. Clinical services address adult and pediatric primary care, preventive screenings, chronic disease management for Type 2 diabetes and hypertension, and sports physicals for school-age patients.