How a 1976 murder case changed doctor-patient confidentiality By M. Sara Rosenthal June 25, 2026 0 min Stat News Share Summary Takeaways Listen Insight Report Clinical Scorecard Quiz Top Institutions 1 The Tarasoff v. Regents of University of California case established the legal duty to warn third parties of imminent threats to their safety. 2 Prosenjit Poddar disclosed his intent to harm Tatiana Tarasoff to his therapist, who failed to warn her, leading to her murder. 3 The California Supreme Court's 1976 decision clarified that patient confidentiality must yield to public safety when harm is foreseeable. 4 The case set a precedent for mandated reporting in healthcare, extending beyond psychiatric threats to other public health concerns. 5 The Tarasoff case redefined the doctor-patient relationship by establishing limits on confidentiality in the interest of protecting others.