Most of the pre-hospital care systems in any countries are composed of these three levels; First Responder (FR), Basic Life Support (BLS) and Advanced Life Support (ALS), ranked by low-to-high ability of operations [3]. Each level varies due to the ability of personnel, medical equipment and transportation. In Thailand, all service providers have to register to Emergency Medical Institute of Thailand. Fig.2 presents the service providers (units) as cumulative from 2003-2007