Never used him, but most places want identification/ drivers license, and any medical records and prescriptions to help back up your request.

He'll probably take your blood pressure, weigh you, ask you about your medical history, any pre-existing conditions will be discussed, ask if you currently smoke cannabis. If you do, he'll want to know how frequently you smoke, how you respond to it, and how it alleviates your ailments, etc.

If he's anything like my doctor, you can expect to be treated the way you normally would at any other routine doctor's appointment. Hope this helps.