For internal medicine in Carlsbad near Poinsettia Park, Donald Jason White, MD provides adult primary care at Kaiser Permanente's Avenida Encinas medical campus. His diagnostic workups for complex multi-system conditions rely on the same-campus imaging infrastructure that includes SimonMed Imaging - Carlsbad for advanced MRI, CT, and ultrasound studies. Kaiser Permanente, founded in 1945, operates the Carlsbad facility as part of its Southern California integrated network covering family medicine, internal medicine, pediatrics, optometry, pulmonology, and sports medicine under one roof. White's internal medicine practice addresses cross-system diagnoses spanning endocrine, cardiovascular, and pulmonary pathology, with coordinated referral pathways to behavioral health providers such as Mindpath Health Psychiatrists & Therapists - Carlsbad for patients presenting with comorbid anxiety or depressive disorders. Comprehensive workups include arterial blood gas analysis, electrocardiography, and multi-panel metabolic screening for systemic disease stratification.