Patrick Allen, a 47-year-old former securities salesman, is accused of killing Kimberly Allen in November 2011.
Prosecutor Peter Kougasian focused on the death of one patient, Joseph Hague, who saw Dr. Stan Li for less than a year before he died.
Three stock traders have been convicted in the second federal trial stemming from a massive probe of insider trading at hedge funds.
The arguments were expected to last all day Wednesday. They’ll include the replaying of some of the hundreds of taped phone conversations made by the government.