Dale R. Holdiman, MD, received his medical degree from the University of Iowa, Iowa City, Iowa where he also completed his residency. Dr. Holdiman is Board Certified in Internal Medicine and has practiced general Internal Medicine with Internal Medicine of Sioux City, Iowa from 1979 to the present.

 David W. Lucke, MD, received his medical degree from the University of Missouri, Columbia, Mo. He completed his residency in Internal Medicine at the University of Iowa Hospitals & Clinics in Iowa City, Iowa. Dr. Lucke is Board Certified in Internal Medicine and is a current Practitioner for Mercy Internal Medicine, Sioux City, Iowa.