Nothing.
He provides no documentation for his claims of persecution, does not offer a remotely plausible excuse for resigning and leaving his patients in the lurch, and offers no reason why he is currently soliciting donations ostensibly for a birth center directly into his personal bank account, having never created a foundation to hold the money.
The hospital, of course cannot comment because it is bound by confidentiality of the peer review process. Dr. Biter has no such legal restrictions. If documentation for his claims of the hospital’s actions existed, he could provide it, yet he has provided no documentation. You just have to take his word for it, just like you have to trust that the money you donate to his personal bank account will be used for the birth center. Evidently his self described “fans” are very trusting.