Director of the Saint Paul VI Institute for the Study of Human Reproduction in Omaha, Nebraska and the Medical Director of its nationally-accredited reproductive ultrasound center that features 3-D and 4-D ultrasound imaging. He began his first research in human fertility in 1968 as a senior medical student. Working at St. Louis University and Creighton University Schools of Medicine, he and his co-workers developed the CREIGHTON MODEL FertilityCare(tm) System and the new women's health science of NaProTECHNOLOGY®. Those intrinsically involved in the development of the CrMS for the last 41 years, along with Dr. Hilgers are: K. Diane Daly, RN, CFCE; Susan K. Hilgers, BA, CFCE, and Ann M.

Prebil, RN, BSN, CFCE (1946-2017).Dr. Hilgers is currently a Senior Medical Consultant in Obstetrics, Gynecology, Reproductive Medicine and Surgery at the Saint Paul VI Institute and is a Clinical Professor in the Department of Obstetrics & Gynecology at Creighton University School of Medicine. He is Director of the Institute's Academic Programs and its National Center for Procreative Health. He is board certified in obstetrics, and gynecology, gynecologic laser surgery and is a member of the Society of Reproductive Surgeons and the Society of Procreative Surgeons. Furthermore, he is certified by the American Academy of FertilityCare Professionals (AAFCP) as a FertilityCare(tm) Medical Consultant (CFCMC) and Educator (CFCE).He is the author of over 238 professional books, book chapters, poster sessions, articles, videotapes and he has given countless numbers of professional presentations. He has also been the recipient of 17 special recognition awards and 7 research awards.

He also directs the largestannual CME program at Creighton University School of Medicine (132 hours per year). He is the recipient of 3 honorary doctorates and was named the Physician of the Year by the Nebraska Family Council.