CHOC Commerce Tower CHOC Specialists Cardiology Office August 2, 2011Cardiology Locations, CHOC Commerce Tower PSF Cardiology Office, LocationscardiologyCHOC Childrens 505 South Main Street, Suite 200, Orange CA 92868 Hours by Specialty Cardiology:Monday-Friday: 8am to 5pm & Saturdays: 8:30am to 12:30pm