Where Can I Find A Psychiatrist To Assess Me For Penis Reduction Surgery?

Hello i m a 58 yr old male . I have this strange obsession I want my penis made smaller . its 7 inch erect and I want it only to be 1 to 2 inch erect . I have found a surgeon who said he can do the surgery but he wants a letter from a mental health professional to say i m of sound mine so I need to find a psychiatrist I can talk to