“Our” charliehall claims to be a PhD at Einstein Med. He seems to be rather educated. He has claimed to not shave. Can I say he is 100% the same person? No, but the circumstantial evidence is strong, so I’m satisfied.
If you really want to find out, I guess you can email or call. Dr Hall’s contact information at Einstein is available if you search the web (he has mentioned that a while ago).