REACH was founded in 1987 by Santa Rosa Memorial Hospital emergency room physician Dr. John L. McDonald, Jr. REACH now serves Oregon, California and Texas from 18 bases of operation and employs nearly 400. Cal-Ore Life Flight was acquired in November of 2011, which expanded airplane and ground ambulance services in northern California and southern Oregon.

REACH provides medical emergency air ambulance services to critically-ill and injured patients as a result of requests from emergency medical services personnel or transferring hospitals often located in rural areas. REACH has transported more than 75,000 patients in over 25 years of operation. REACH Air Medical Services is owned by AMGH which supports the individual brand identities and management of the companies in the group.