New Search Back to Search Results 11290 Share Profile Michael S. Ritter, MD Specialty Emergency Medicine Additional Language Spoken Spanish, English Phone (949) 364-1400 Address Mission Hospital - Emergency Medicine 27700 Medical Center Road Mission Viejo, CA 92691 Get Directions Accepting New Patients HealthCalling St. Joseph Health's award-winning blog featuring our experts who provide relevant and timely advice on wellness topics, news and health information View Posts Primary Office Address Mission Hospital - Emergency Medicine 27700 Medical Center Road Mission Viejo, CA 92691 Get Directions Phone (949) 364-1400 Fax (949) 364-4941 More Information 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 Meet The Doctor Specialties & Education Primary Specialties Emergency Medicine Education & Training Medical School University of California Internship University of California - 1992 Residency University of California Areas of Interest Emergency Medicine Biography Biography Biography Certifications American Board of Emergency Medicine Areas of Expertise Toxicology, Disaster Management More Info More Info HealthCalling Stay in touch with our experts for the latest wellness topics and news. Understanding The American Heart Association's New CPR Guidelines: Pace Yourself How To Stay Swimmingly Safe Back to Search Results