- 1965 foundation of the ambulance service by Alex Zerzuben
- 1972 Bruno Zerzuben takes over the parental business
- 1994 construction of a modern Company building in Visp
- 1995 foundation of the Sanität Oberwallis AG
- 2000 IVR certification as 2nd ambulance service in Switzerland
- 2009 Takeover of the ambulance service in Goms
- 2009 recertification by the Interassociation for Rescue Services
- 2010 Construction ot the "Emergency Medical Education Center"
- 2014 Bruno Zerzuben enters well-deserved retirement
- 2015 recertification by the Interassociation for Rescue Services
- 2015 Iwan Zerzuben takes over the management of the Rescue service
