Immendorf investigations have been specializing in sub rosa investigations for over 60 years. We were established in 1966 and have been working with TPAs, insurance companies, defense law firms, and city and county governments, among many other clients in the workers compensation industry. The principals of our company have over 100 years’ combined experience in the investigative field. We have some of the most experienced investigators in California. Most of our investigators are bilingual, both male and female. We have completed over 20,000 surveillance assignments, and work out of state on a regular basis, upon request. We have had many cases prosecuted, and work closely with our SIU division. We concentrate on one thing: results.