Johnson County MED-ACT is the Emergency Services provider for Johnson County, KS. Johnson County Kansas is made up of 476 squ ... are miles, with other 560,000 residents. In 2019, MED-ACT responded to over 46,346 EMS calls. Our operations staff is comprised of 146 providers who work in 24 hour shifts on a rotating modified berkeley schedule. We have 20 front line ambulances including 3 impact units and 2 squad units that help us provide care for our community members. read more