Dr. Howard Kornfeld Mum On Failed Attempt to Save Prince

5/5/2016 2:07 PM PDT

Dr. Howard Kornfeld Mum On Failed Attempt to Save Prince

EXCLUSIVE

The doctor who was commissioned to save Prince's life is not talking about the singer or his death.

We got video Thursday of Dr. Howard Kornfeld, arriving at his Marin County, CA rehab facility, Recovery Without Walls.

As we reported, a rep for Prince called Dr. Kornfeld the day before Prince died, saying the singer was in grave danger and the doctor's services were desperately needed. Dr. Kornfeld could not immediately clear his schedule, but he sent his son, who came with a synthetic opiate used to treat people with addiction problems.  

Dr. Kornfeld gingerly locked up his bike ... a weird coincidence given Prince's love of bicycles. One of the last photos of Prince was shot while was was tooling around Paisley Park.