I am assuming this is in the context of a lawsuit. If you were NOT at the office then you MUST have been somewhere else. Prove that you were THERE at the time of the appointment by getting witnesses to testify to your presence there at that time. Next, subpoena all nurses, doctors, receptionists and other patients who were present in the office on that day. (You will be allowed to subpoena the office records showing this information but not any patient medical information. If you truly were not there, they will say so. Demand your medical file to see what the doctor wrote in it during your "visit". If there are no entries for that date then how can he say you were there.
Anyone could say they were a doctor, even if they had no training. (APEX)
Your question is unclear. However, if you are referring to the supposed healing powers of crystals, pyramids or any other geometrical shape, then doctors are professional people and require proof of any claims made. Extraordinary claims require extraordinary proof. It is the responsibility of the person making the claim to prove that claim, it is not the responsibility of anyone else to disprove it.
Doctors needed no legal do to prove they were doctors
No, despite common belief, a doctor cannot prove that your a virgin.
Not only that, there were no antibiotics and sanitation was poor. A small scratch could prove fatal.
Where the products says it will do something, but there is nothing to prove it
If you are referring to what dr.riversong whispers into the doctors ear in the episode silence in the library with David Tennant. Then she whispered his name to prove that she knew him very very well.
The person that claims to have paid the support.
it would not be faith if there was hard evidence
Where the products says it will do something, but there is nothing to prove it
Some do if the facts are strange or if they are hard to prove or there are inconsistencies.
There are a lot of Hospitals an best doctors in India. It wise to seek out those that can prove qualified competence staff directly near where you live as many will post in forums that they are the best and as such forums cannot guarantee that