210 ILCS 5/4
No person shall open, conduct or maintain an ambulatory surgical treatment center without first obtaining a license from the Department.
Nothing in this Act shall be construed to impair or abridge the power of municipalities to license and regulate ambulatory surgical treatment centers, provided that the municipal ordinance requires compliance with at least the minimum requirements developed by the Department pursuant to this Act.
The Administrative Review Law, as heretofore or hereafter amended, shall be applicable to the judicial review of final administrative decisions of the regulatory agency of the municipality. Any municipality having an ordinance licensing and regulating ambulatory surgical treatment centers which provides for minimum standards and regulations which meet at least the minimum requirements established pursuant to this Act shall make such periodic reports to the Department as the Department may deem necessary. This report shall include a list of ambulatory surgical treatment centers meeting standards substantially equivalent to those promulgated by the Department under this Act. The Department may issue a license to such ambulatory surgical treatment centers based upon such reports or the Department may conduct investigations or inspections to determine whether a license should be issued to these ambulatory surgical treatment centers.
210 ILCS 5/4