As a former San Diego District Attorney who prosecuted over 1,000 cases including murder and criminal street gang trials in the DA's Criminal Street Gangs Unit, the Law Office of Gregory Garrison operates from the Emerald Plaza on West Broadway in downtown San Diego's Columbia district. Defendants facing charges that involve court-ordered psychological evaluations or anger-management compliance are referred to counseling providers in the downtown network that includes California Pacific Counseling Center in the Gaslamp Quarter. California State Bar number 238981 and additional prior service as a law enforcement officer who investigated over 500 crimes provide the prosecution-side insight the firm applies to DUI, drug offenses, domestic violence, assault, theft, sex crimes, gang allegations, and homicide defense across San Diego County. International clients facing criminal charges in this border-region jurisdiction sometimes require Hague Convention document authentication, a step coordinated through Apostille San Diego in the same downtown area. The highest-stakes defense work involves gang-enhancement allegations under Penal Code Section 186.22, requiring expert testimony on gang culture, social-media evidence authentication, and cell-site location analysis to challenge prosecution theories of criminal street gang participation.