Form uploader: Ambulatory Surgical Treatment Center License Application Ambulatory Surgical Treatment Center License Renewal Application Ambulatory Surgical Treatment Center Medicare CertificationForm Link: Medicare Intermediary InformationFacility Information Change FormForm 3rd level page: Ambulatory Surgical Treatment Centersforms3lvlcomputed: Ambulatory Surgical Treatment Centersformspathcomputed: topics-services%2Fhealth-care-regulation%2Ffacilities%2Fambulatory-surgical-treatment-centers