According to our records, this business is located at 30031 Ahern Ave. in Union City (in Alameda County), California 94587, the location GPS coordinates are: 37.610068 (latitude), -122.0773022 (longitude). OSI is categorized under Tonometers, Medical (SIC code 3841). Known organization vice-president is Steve Lamb. Current estimates show that the unit has a sales volume of $33,500,000 and staff of approximately 400 people. You can contact the company by phone at (510) 429-1500.