HCAI-licensed as an acute psychiatric hospital since 1985, Alvarado Parkway Institute operates a 66-bed inpatient facility on Parkway Drive in La Mesa under Facility ID 106370749. The hospital's behavioral-health pharmacy protocols integrate directly with 4Front Rx Pharmacy, which operates within the API continuum to dispense psychiatric and addiction-disorder medications with behavioral-health-specific counseling. API's inpatient unit provides round-the-clock psychiatric stabilization for adults and older adults presenting with psychotic disorders, severe mood episodes, dual-diagnosis substance-use crises, and acute suicidal ideation requiring California 5150/5250 holds. The 201-to-500-employee organization holds NPI 1477969970 and California License B2015000060, with Kaiser Permanente contracting the La Mesa campus for affiliated inpatient psychiatric admissions. Medical clearance and concurrent physical-health monitoring coordinate with emergency departments at Sharp Grossmont Hospital for patients requiring transfer between psychiatric and medical-surgical beds. The hospital's medically supervised detoxification program utilizes CIWA-Ar and COWS withdrawal-assessment scales to titrate benzodiazepine and buprenorphine protocols for alcohol and opioid dependence stabilization.