Samuel Etchie, MD in Chula Vista's Third Avenue corridor is a board-certified psychiatrist who earned his medical degree from the University of Ibadan in 1982 and completed a general psychiatry residency at UCSD's Department of Psychiatry. His forensic psychiatry fellowship at UCLA and clinical focus on addiction, substance abuse disorders, and psychotic conditions place the practice within the same inpatient behavioral health network as Bayview Behavioral Health Hospital at nearby Paradise Valley Hospital, where he holds attending privileges. An internal medicine internship and anesthesiology residency at Texas Tech University Health Sciences Center in El Paso preceded the shift to psychiatry, giving the practice a dual perspective on pharmacokinetics and physiological drug interactions. CA medical license A53857 and NPI 1124039052 support Medicare-participating services that include diagnostic psychiatric evaluations, psychotropic medication management, and crisis stabilization for patients presenting with co-occurring substance use and mood disorders, with lab coordination through Quest Diagnostics for metabolic and toxicology panels. Pharmacotherapy protocols address treatment-resistant conditions using clozapine titration with mandatory absolute neutrophil count monitoring, lithium serum-level tracking at 0.6 to 1.2 mEq/L therapeutic windows, and buprenorphine induction sequencing for opioid use disorder under DATA 2000 waiver provisions.