Home » Locations » Oso Pediatrics Oso Pediatrics MenuLocations Home Emergency Departments Emergency Department, Orange Emergency Department, Mission Viejo Emergency Department, 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 Phone: 949-898-6220 Hours: Monday – Friday: 9 a.m.-4 p.m. Get Directions Visit Site