I recently visited the Mayo Clinic in Scottsdale for the diagnosis of Gastrointestinal issues. I was coming there from another state because Mayo was highly recommended for diagnostics. After undergoing tests for three days, I went home waiting for a phone call from the doctor to explain my results and to make a recommendation. After three weeks I still had not heard a peep. I called four times without getting a medical professional, let alone my doctor, on the phone. Finally, desperate for answers I had my lawyer fax a strongly worded letter explaining the situation and requesting a response. I got a call back within am hour. However, the doctor diagnosed me with a disorder that had been ruled out months before. I had made the doctor aware of this previously and tried to explain it to him again but he refused to listen and would not back down from his position. I continue to suffer, without a diagnosis. I could not be more disapointed with my experience at Mayo Clinic. I was seen by Kevin C. Ruff, M. D..