Dr. Sim is one of a kind. He has been my primary care physician since 2006 and is my families PCP as well. He has incredible bedside manner and a level of knowledge and expertise that is...
William Sim, MD
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Dr. William Sim, MD, is a skilled physician based in Downey, California, with an M.D. degree from Stanford University School of Medicine. He has completed his Internship and Residency at UCLA, showcasing his extensive training and expertise in the medical field.
Additionally, Dr. Sim is fluent in Korean, allowing him to serve a diverse patient population effectively. His commitment to patient care is reflected in his collaboration with the Frischer Medical Group.
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Reviews

Terrible office Terrible physician Office unresponsive Physician does not know what he's doing I have been waiting for authorizations for months. He doesn't do it. He doesn't know what he's...

Always awesome service and sense of urgency. Dr. Sim is great and knows what he is talking about
Dr. Sim has been my primary care physician since the beginning of 2019. He is everything a doctor should be--he listens to the patient and follows through with recommendations and treatment. In...
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