Complex sentence: The caution from CPSO is not reportable on Collins' standing with the College and he remains a member in good standing and is still retained by the College as an expert in forensic psychiatry.
Split into simpler sentences: The caution from CPSO is not reportable on Collins' standing, with the College, and he remains a member in good standing. Collins is still retained, by the College, as an expert in forensic psychiatry.