On Nov. 23, 2006, a prisoner named "Danny T." complainted to prison nurses about severe abdominal pain. Doctors examined him that day, as well as three days later — and again the next day.
During the third visit, on Nov. 27, 2006, Yin was the doctor on call, and it was the first time that he was examining the patient for those reported symptoms. Danny, who was vomiting and appeared jaundiced, told Yin that the pain had started three months earlier, according to board documents. Yin prescribed the inmate some medication and suggested that he drink only clear liquids.
Danny returned the next morning with tenderness in his abdomen and dark urine. Yin diagnosed it as acute gastritis, an inflammation of the stomach lining. He ordered Danny back the next day, when test results would be back.
Hours later, Danny returned in even worse shape. According to board documents, that's when Yin finally referred Danny to the emergency room.
It was too late.
Physicians there said that Danny had an inflamed pancreas and kidney failure. He died a week later. The board said Yin should have referred Danny to the emergency room earlier, if not having ordered that lab tests and X-rays be done on the patient earlier.
"Such conduct constitutes an extreme departure from the standard of care," the board concluded.
Yin made many similar missteps a year earlier, the board found. In September 2005, a prisoner named "Danny M." who had a history of kidney and liver problems came to Yin complaining of shortness of breath and weakness. He also noted that he had had diarrhea for nearly a week.