The case involved a Fresno, Calif., man who was declared brain-dead by two doctors. A third doctor, brought in after the patient's daughter demanded it, said 47-year-old John Foster was still alive.
Foster's daughter, Melanie Sanchez, said she was concerned because the second doctor seemed in a rush, the Los Angeles Times said.
Foster, who had suffered a brain hemorrhage, died 11 days later.
The apparent misdiagnosis, the second in California in recent months, raised questions about the care of prospective organ donors, the report said.