David Morse & Assoc. (DMA Investigations) was established in Los Angeles in 1979. We offer investigation services throughout California and in many other states (click here for current Investigations map). Expertise in Work Comp investigation and SIU for Property and Casualty losses. We offer surveillance, AOE/COE (compensability), Social Media Investigations, Service of Process and a wide range of SIU services. DMA‘s home office is located in Glendale, CA. Please call us at (800) 649-7602 or .