The forensic pathologist hired by the family was Michael Baden. He did an examination on a body. I do not recall that he specifically certified that the body he worked on was that of JE.
My recollection is that he examined an autopsy report
Baden spoke about his observation of the autopsy in a press conference. He said that some of the broken bones in the neck were rarely broken in suicides, but often broken in murder.
That justified his fee from the family. He was hired to make sure the autopsy was on the up and up. He made no challenge to the Medical Examiner’s finding of suicide. He did claim not Epstein was murdered.
Hope that helps.