According to our records, this business is located at 8550 Balboa Blvd. in Northridge (in Los Angeles County), California 91325, the location GPS coordinates are: 34.2261975 (latitude), -118.5018078 (longitude). Quest Diagnostics Inc is categorized under Testing Laboratories (SIC code 8071). Known organization manager is Diane King. Current estimates show that the unit has a sales volume of $564,000 and staff of approximately 4 people. You can contact the company by phone at (818) 830-2266; the following fax number is also provided: (818) 891-7780.