New Search 11459 John Sun MD (949) 305-8000 Primary Specialties Otolaryngology (ENT) Medical Groups & Affiliations Hoag Affiliated Physicians Mission Hospital Affiliated Physicians Primary Office Address: 24411 Health Center Drive, Ste. 600 Laguna Hills, CA 92653 Phone: (949) 305-8000 Web Page: www.missionhap.org Secondary Office Address: 22 Odyssey, Ste. 100 Irvine, CA 92618 Recommend this Physician Request an Update for this Physician Get Directions The patient rating score is based on responses and comments from Press Ganey. Responses are measured on a 10 point scale, with 10 being the best score. These scores are then translated to a 5 point scale in order to display results in a 5 Star rating. Comments are also gathered from the same survey and displayed in their entirety with the exception of any language that may be considered libel, or may contain private health information, or is unrelated to the provider being reviewed. Learn more about Press Ganey star rating calculations