There is no requirement by Medicare. I called Medicare to verify this after a hospice company told us there was a requirement. I was on the phone for quite a while with medicare to make sure they understood my question about a medicare requirement for a social work to call/visit hospice patients. They said there is none. My husband was on hospice for less then a week. He did not want to see a social worker nor a chaplain and specifically told the nurse to NOT have anyone call. Unfortunately the social worker from the company ignored the nurse and called anyways. There were other problems with this company that were unacceptable and as a result my husband revoked hospice. There is no requirement even though companies try to tell you there is. Doesn't give us a very trustworthy feeling about hospice.