Inpatient psychiatric care and intensive outpatient programming near Grossmont Center in La Mesa are delivered by Sharp Grossmont Hospital for Behavioral Health, a separate psychiatric unit within the Sharp HealthCare system operating for over 35 years at 5555 Grossmont Center Drive. The unit functions as the behavioral health arm of Sharp Grossmont Hospital, sharing the campus infrastructure for medical stabilization of patients presenting with co-occurring psychiatric and physical health emergencies. Treatment modalities span inpatient crisis intervention, partial hospitalization, hospital-based intensive outpatient programs, and outpatient therapy, with clinical staff including psychiatrists, licensed clinical social workers, and licensed marriage and family therapists. The unit treats adults, transitional-age youth ages 18 to 26, and children ages six and older, with specialized programming for dual-diagnosis substance use and serious mental illness, and community providers coordinate step-down referrals through the behavioral health intake line at Fletcher Parkway Medical Center for patients transitioning from inpatient stabilization to outpatient follow-up in the Fletcher Hills corridor. The facility's highest-acuity service includes electroconvulsive therapy (ECT) for treatment-resistant major depressive disorder and medication-assisted treatment (MAT) for co-occurring opioid use disorder requiring simultaneous psychiatric and addiction stabilization.