Devoted to
Caring for your health
Our highly qualified physicians are ready to assist you with your internal medicine needs from preventative care to overall kidney wellness.
Welcome to Premier Nephrology of Orange County
We specialize in providing comprehensive kidney diagnostic services and treatment. Our physicians Son T. Dinh, M.D., Essam Mostafa, M.D. and Philip S. Yang, M.D. are educated and trained in the United States. They are board-certified by the American Board of Internal Medicine in Nephrology and Internal Medicine. Our team of physicians has extensive experience with the latest advancements in the kidney care and disease field. They strive to educate our patients and their families on everything from preventative wellbeing care medicine, to all forms of dialysis and transplantation should this become necessary.
Meet Our Doctors
Premier Nephrology of Orange County is dedicated to providing patients with the best possible care.
Philip S. Yang, M.D.
A patient, brilliant, and compassionate physician who is dedicated to facilitating the care of his patients.
Son T. Dinh, M.D.
Devoted to practicing medicine with care and compassion towards his patients.
Essam Mostafa, M.D.
Recipient of The Physician of the Year 2013 from Huntington Beach Hospital in California “Physician Excellence Award”.



