Johnson said his company will build five portable buildings with interconnected walkways on the Moore Medical Center site that can be used until the permanent building is ready.
The buildings will be up in about two weeks, he said, although getting them operational may take until December.
Once the work is completed, emergency services on which Moore residents depend will be available immediately, Medical Director Robin Mantooth said.
“It will provide everything an emergency department is expected to provide. We look forward to it,” she said.
“We've put a lot of time and effort into the planning of this. We want Moore to see our commitment,” Whitaker said.
Moore Medical Center averaged about 35,000 emergency room visits a year, he said.
“The Moore people are very resilient,” Mayor Glenn Lewis said. “Just the enormity of this tornado has been hard to deal with, but people are rebuilding. And, in most cases, they are rebuilding bigger and better.”