Not a teacher only a native.
From what I can gather from your text, I would write it like this:
'I phoned Dr. John to enquire about the date of her operation. He has informed me that he has not met her personally, nor had he given her any time frame for the operation, however he has seen her medical report. I have been shown the medical report which says that the patient is out of the city.'
I think this may be right, it is hard as I cannot work out exactly who is saying what to who. Please let me know if my interpretation is wrong and I will try and correct it.
Student or Learner