Is it my right to get provider-to-provider communications and records upon lack of informed consent?

My issue concerns violations of informed consent, documentation fraud by a psychiatrist and referral doctor, and potential destruction of evidence by a hospital. I was not informed of the purpose of the psychiatry appointment by either the referring doctor or the psychiatrist, nor was I given consent for the tests he did for his hypothesis of autism. All of which was accessing old records from a different program that caused me harm. I did not know such documents existed, and I cannot obtain the entirety of these files from the old hospital.

I discovered documentation fraud: The psychiatrist had removed important disclosures that obviously went against his ambushed autism screening and lack of care that caused me re-traumatization. Now, I lack the specific care that I don't have access to. During an active investigation, medical records denied me access to provider communications despite a HIPAA request. I want to obtain all communications and old hospital files. I believe the current hospital will permanently destroy audit trails and I am involved in a "circle referral" regarding this issue, which I suspect they will spoil evidence. What can I do?