Daniel H. Gregory, MD

Daniel H. Gregory, MD, Gastroenterologist and Medical Educator at Columbia University, has been recognized by Marquis Who’s Who Top Doctors for dedication, achievements, and leadership in gastroenterology and higher education.

Keith D. Lindor

Keith D. Lindor, MD, Senior Advisor to the Provost at Arizona State University, has been recognized by Marquis Who’s Who Top Doctors for dedication, achievements, and leadership in the medical industry.