City inspectors entered the Endoscopy Center of Southern Nevada at 700 Shadow Lane about 3 p.m. to serve an emergency suspension order. After waiting until six patients had completed treatment, all employees left the building and the doors were locked.
The clinic's business license is suspended until further notice, Mayor Oscar Goodman said at a late afternoon news conference.
"The city now has the business license in hand," Goodman said. "They don't have a license to do business in the city of Las Vegas."