Lindstrom normally appears on the show while counseling main character Lieutenant Olivia Benson .
Irwin regularly appears on the NBC crime series Law & Order : Special Victims Unit as therapist , Dr. Peter Lindstrom .
Dr. normally appears on the show while counseling main character Lieutenant Olivia Benson .
Irwin regularly appears on the NBC crime series Law & Order : Special Victims Unit as therapist , Dr. Peter Lindstrom .