Orthopaedic Specialty Institute Medical Group of Orange County Orthopaedic Specialty Institute Medical Group of Orange County is located on 280 S Main St Ste 200 in Orange. They can be reached by phone by calling (714) 634-4567 or by going to their website . They can be reached by calling (714) 634-4567 or going to their website . They have not yet been reviewed on MojoPages.com.