Dr. David Slier maintains a clinical psychology practice on Spring Street in La Mesa Village, credentialed as a Fellow of the American Academy of Experts in Traumatic Stress (FAAETS) and certified in Behavioral Sleep Medicine (CBSM). License PSY 9927 reflects more than 38 years of clinical experience, and the practice's medication-coordination protocols for sleep and mood disorders connect to local dispensaries including Grossmont Pharmacy in the Grossmont area. Slier's dual affiliation with his La Mesa private practice and Naval Medical Center San Diego extends his clinical scope to active-duty military and veteran populations through VA Community Care and TRICARE referral pathways. Trauma-informed treatment integrates evidence-based psychotherapy with somatic-awareness techniques, and his referral network for chronic-pain patients includes complementary providers such as Bodywork 4 Health in La Mesa. Specialized assessment protocols involve polysomnography-correlated cognitive-behavioral therapy for insomnia (CBT-I), combining sleep-diary analysis with stimulus-control and sleep-restriction techniques calibrated to each patient's circadian profile.