MCNT | Medical Clinic of North Texas

Internal Medicine

Adult medicine is a wonderfully satisfying opportunity to use medical knowledge and skill to help people become healthier and live longer.

Photo of John Wittenberg, M.D.

Dr. Wittenberg

Wittenberg, M.D.

John Wittenberg, M.D. is Board Certified by the American Board of Internal Medicine.

Dr. Wittenberg accepts Medicare for existng patients only.

About Me

The spectrum of problems we see in Adult Medicine (Internal Medicine) is vast and the science of medicine is fascinating. An Internal Medicine physician must stay attuned to all the possible causes for a person's ailments and be able to direct the way to explain and hopefully cure them.

Born and raised in rural Wisconsin and educated at great institutions there, my wife and I couldn't leave Texas, after falling in love with the people and the climate during my post-medical school training in Dallas and Galveston. My wife and I have lived in Plano since I first started practicing medicine. We raised three sons, all grown now and living nearby. My mother also lives in Plano. My father (the watercolor artist whose works adorn our office) died a few years ago.

I love snow skiing, biking and my family time. I like to read non-fiction and history when I have the time.


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Make the health system work better for everyone, inspiring people to live healthier lives.