Home » Locations » Oso Pediatrics Oso Pediatrics MenuLocations Home Emergency Departments Emergency Department, Orange Emergency Department, Mission Viejo Transfer Partner: Mission Hospital, Laguna Beach Hospitals CHOC Hospital, Orange CHOC at Mission Hospital, Mission Viejo Urgent Care In-Hospital Services Diagnostic Services Heart Services Metabolic Laboratory Procedure Center Primary Care Specialty Care A member of the CHOC Primary Care Network Visit osopediatrics.choc.org for more information. Location 24502 Pacific Park Drive Suite 104 Aliso Viejo, CA 92656 Contact: 949-898-6220 Hours: Monday – Friday: 9 a.m.-5 p.m. Get Directions Visit Site