Welcome to OCKidney

  Contact: : Orange Office - (714) 639 4901 | Newport Office - (949) 631 9215

  • <span>COVID-19</span>


    Nephrology Specialists Medical Group is closely monitoring the COVID-19 Pandemic. Our Goal during this time, as always, is to keep our patients and employees safe. Our office is currently open, however, if you are sick, or have flu like symptoms, please contact our office before coming in.

    Due to the current emergency, we have been authorized to provide follow-up visits via tele-health. If you have a follow-up appointment scheduled, or would like to schedule a follow-up appointment, and would prefer to see your doctor via tele-health, please call our office. It's simple to set up via your smart phone or tablet and we encourage you to take advantage of this during this COVID-19 crisis.

  • <span>For</span> Over<span>45</span>Years!

    For Over45Years!

    We have provided exceptional personalized kidney care to the Orange County community. With offices in Orange and Newport Beach as well as dialysis units throughout Orange County we are centrally located to better serve you.

  • We <span>Care</span> for <span>You</span>

    We Care for You

    Our physicians are experts in the management of kidney disease, including electrolyte abnormalities, acute kidney injury, chronic kidney disease, glomerular, autoimmune, home and in center renal replacement therapies, pre/post-transplant management, hypertension, and kidney stone prevention just to name a few. We realize how difficult a diagnosis of kidney disease can be and we are here to help navigate you through the complexities of such specialized care.


We have partnered with the following organizations and institutions to bring you optimal care right here in Orange County.

St. Joseph Hospital of Orange

Hoag Memorial Hospitals

Orange County Medical Association

National Kidney Foundation

American Society of Nephrology

Renal Physicians Association

Meet our Medical Specialists

Amer E. Jabara, MD

Amer Jabara, MD is a nephrology specialist in Orange County, CA and has been practicing for 23 years. He graduated from Keck School Of Medicine Of The Univ Of Southern California in 1989 and specializes in nephrology.

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Glenn B. Chiang, MD, PhD

Glenn Chiang, MD is a nephrology specialist in Orange County, CA and has been practicing for 20 years. He graduated from Saint Louis University School Of Medicine in 1993 and specializes in nephrology.

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Bryan Q. Dang, MD

Bryan Dang, MD is a nephrology specialist in Orange County, CA and has been practicing for 17 years. He graduated from University Of California, Irvine, College Of Medicine in 2001 and specializes in nephrology.

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Linh L. Thong, MD

Linh Thong, MD is a nephrology specialist in Orange County, CA and has been practicing for 12 years. She graduated from G Washington Univ Sch Med & Hlth Sci in 2006 and specializes in nephrology.

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Sarah J. Lee, MD, PhD

Sarah Lee has both a PhD and MD from John Hopkins. After completing an internal medicine residency at the University of California, Los Angeles, she found her true passion in Nephrology.

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What patients say About OCKidney

  • "Dr. Thong is one of the most caring doctor we have ever experienced. She can look at your blood test and tell you so much information and what is wrong and what is right. She calls back when you request the office to ask her to call! She works with our other doctor's and figures out what is best for us and when she says she will call and talk to your other doctor, she keeps her word."

  • "I have been seeing Dr. Dang for a few years now. He is always on time for his appointments. He is always friendly, provides lots of information, and has always listened to my questions, and made sure that I understood his answers. I highly recommend him."

  • "I highly recommend Dr. Jabara. He is extremely knowledgeable, personable, patient and compassionate. He understands your specific needs and approach to disease and works with it. He doesn't over-prescribe but at the same time he is extraordinarily thorough. He is interested in the whole patient and not just concerned with renal function. He is by far the best doctor I have ever had."

  • "Dr.Kaupke listens. Funny. Kind patient professional great doctor"