My husband had his last radiation treatment February 23rd. His RO is his main doctor right now and is the doctor that is scheduling his scans, which will be done in June. Leon sees his RO once a month. He has seen his ENT twice since the end of treatment and is not scheduled to see the ENT again until June, so I would say right now he is seeing his ENT every 2 months. The ENT was going to order the scans, but we told him the RO had that covered. He said good, just make sure that he gets sent a copy of the scan results also. Also, he gets scoped everytime he sees one or the other of the doctors.