Two more manslaughter charges have been filed against a Des Moines doctor.
Dr. Daniel Baldi was in court Monday afternoon where he entered not guilty pleas to all 10 of the manslaughter charges he faces.
Baldi is accused of prescribing lethal doses of pain medication to his patients. One of the cases he is charged in is the death of Slipknot bassist Paul Gray.
Baldi ran the Iowa Health Systems Pain Clinic, which closed in June.