Unable or unwilling? It is a violation of medical privacy, and probably a violation of law, to release patients' records. The doctor was perfectly forthcoming about his work with Terri.
Uh. No. Doctors are required to testify in court every day in this nation regarding their patient care and back up claims they have made. Names are redacted to protect patient confidentiality.
The doctor could back up one single claim he'd made about patients he had helped. Not one.