Main Street Speciality Surgery Center Address: 280 S. Main Street, Suite 100 Orange, CA. 92868 Tel: 714-704-1900 Email:info@msssc.com Hours: Monday - Friday 6:00 a.m. - 5:00 p.m. Skilled Orthopedic Surgeons. State-of-the-Art Equipment. Main Street Specialty Surgery Center is one of two outpatient centers with the Hoag Orthopedic Institute. It is conveniently located in the City of Orange. The Surgery Center’s professional and caring staff, combined with state-of-the-art equipment, assist orthopedic surgeons in providing the highest quality care for both patients and their loved ones. Looking for a compassionate, capable physician? Search our online physician directory.