Stewart Andrea MD provides primary care physician services in La Mesa's 91942 ZIP code, serving the Grossmont-area community near Sharp Grossmont Hospital on Center Drive. After-hours and acute-illness needs that exceed primary care scope route to walk-in facilities like Marque Urgent Care, which handles sprains, lacerations, and minor fractures with on-site digital X-ray. Primary care at this level encompasses annual wellness exams, chronic disease management for conditions such as hypertension and type 2 diabetes, and age-appropriate cancer screening referrals per United States Preventive Services Task Force guidelines. Musculoskeletal complaints that present during routine visits often warrant conservative co-management with chiropractic specialists such as La Mesa Spine Center, which provides spinal decompression and corrective adjustment protocols. The practice handles multi-system evaluations that include comprehensive metabolic panels, lipid profiles, hemoglobin A1c testing, and thyroid function screening to establish baseline diagnostic markers.