What evidence is required to prove medical malpractice in California courts?

To prove medical malpractice in California, you must show four elements with evidence. First, duty of care—medical records or bills proving a doctor–patient relationship. Second, breach of standard of care—expert testimony showing the doctor acted negligently. Third, causation—evidence like reports and expert opinions linking the mistake to your injury. Fourth, damages—proof of harm such as medical bills, lost wages, or pain. California courts rely heavily on expert witnesses and detailed medical documentation. Laws like Medical Injury Compensation Reform Act may also affect compensation limits.