Dr. Diaz operates out of several hospitals in lower Michigan near Detroit.  My experience with him was out of his Southfield clinic and surgery out of Harper Hospital in Detroit, Michigan where he performed a STA-MCA Bypass and EMS on me in 2003.  He is also Professor of  Neurosurgery at Wayne State University.  He is considered a Cerebrovascular Neurosurgeon and his office is called:  University Neurosurgical Associates, PC.  His phone number is:  1-877-784-3667.  His email is:  fdiaz@unsg.com.