He is 76 years old, and from Burr Ridge. He is a radiologist.
Born in Dayton, Ohio, he earned a scholarship to a private school in Exeter, New Hampshire, and served in the Army. He graduated from Oberlin College and was granted special admission to the Harvard Medical School. He opened his own practice in 1984.
A 2018 candidate for governor, he also has served as a member of the Burr Ridge Board of Trustees and run for Congress. He describes himself as the only pro-choice candidate among the five seeking to unseat Durbin. He and his wife, Susan, have one son and three daughters.