Complex sentence: Dean Michael Ornish (born July 16,1953) is an American physician, researcher, speaker, president and founder of the nonprofit Preventive Medicine Research Institute in Sausalito, California, as well as Clinical Professor of Medicine at the University of California, San Francisco.
Split into simpler sentences: Dean Michael Ornish (born July 16,1953) is an American physician and researcher. He is the president and founder of the nonprofit Preventive Medicine Research Institute in Sausalito, California and a Clinical Professor of Medicine at the University of California, San Francisco.