Dr. de Harter is born in Milwaukee, Wisconsin, to George Herbert and Marion Bertha de Harter.
David de Harter graduates summa cum laude from Salvatorian Seminary, St. Nazianz, Wisconsin, and enters the Jesuit Order, August 16, as a novice in the Wisconsin Province.
David de Harter matriculates at Marquette University, Milwaukee, Wisconsin, in the College of Letters and Science.
David de Harter continues premedical undergraduate studies at UW-Milwaukee, graduating three years later with high honors, Phi Kappa Phi Honor Society, and a Bachelor of Arts.
David de Harter marries Diane Leigh Kuebler and matriculates at the University of Wisconsin School of Medicine in Madison, Wisconsin.
Doctor de Harter graduates with honors, Alpha Omega Alpha Honor Society, receives a Doctor of Medicine, and begins a rotating internship at the US Naval Hospital, National Naval Medical Center in Bethesda, Maryland.
Doctor de Harter completes the internship and begins his service with the US Navy in Charleston, South Carolina.
Doctor de Harter is honorably discharged as LCDR, MC, USN, and enters residency in therapeutic radiology and oncology at the MD Anderson Cancer Center (MDACC) in Houston, Texas.
Doctor de Harter is awarded first prize in the MDACC Annual Clinical Training Research Project Competition for fellows, residents, and project investigators.
Doctor de Harter completes the residency in radiation oncology at MDACC, passes the American Board of Radiology exams, is board certified in radiation oncology, and takes a position in Roanoke, Virginia, as an attending radiation oncologist at LewisGale Medical Center and Carilion Roanoke Memorial Hospital.
Doctor de Harter is appointed director of radiation oncology at Columbia St. Mary’s Hospital, Milwaukee, WI, and serves as an attending radiation oncologist at Wheaton Franciscan Health Care, Milwaukee, Wisconsin.
Doctor de Harter is appointed director of radiation oncology at Bishop Clarkson Memorial Hospital in Omaha, Nebraska, and holds an assistant clinical professor of radiation oncology appointment at the University of Nebraska Medical School, Omaha, Nebraska.
Doctor de Harter is appointed director of radiation oncology at CHI Health Immanuel, adding director of radiation oncology at Lutheran Hospital, both in Omaha, Nebraska, and director of radiation oncology at Lutheran Community Hospital in Norfolk, Nebraska, for whom he planned and directed the Faith Regional Carson Cancer Center, a gift to the community from Johnny Carson to honor his parents.
Doctor de Harter serves as president of a division of the American Cancer Society.
Doctor de Harter joins Oncology Services Corporation and is appointed director of radiation oncology at Flagstaff Medical Center, Northern Arizona Healthcare, and holds a clinical lecturer appointment at the University of Arizona School of Medicine, Tucson, Arizona.
Doctor de Harter is appointed head of operations and director of radiation oncology at the Treasure Coast Cancer Center, Port St. Lucie, Florida, as well as director of radiation oncology at the Cancer Centers in Fort Pierce, Florida, and Okeechobee, Florida.
Doctor de Harter joins Mid Florida Radiation Oncology Associates as a full partner and is director of radiation oncology at the Treasure Coast Cancer Center, Port St. Lucie, Florida.
Doctor de Harter retires from practice. He and his wife Diane establish the Phoenix Fund endowment at the MD Anderson Cancer Center and endow the Alpha Omega Alpha Honor Medical Society Visiting Professorship at the University of Wisconsin School of Medicine and Public Health, and other philanthropy.
Doctor de Harter receives the Albert Nelson Marquis Lifetime Achievement Award from Marquis Who’s Who.