Remembering Robert J. Herfkens, MD

Robert J. Herfkens, M.D., Professor of Radiology, Emeritus, passed away on February 22, 2026, at the age of 76.

Dr. Herfkens's career at Stanford Radiology spanned three decades, during which he was an exceptional clinician, researcher, teacher and mentor. His service to the Department of Radiology and Stanford University School of Medicine were outstanding.

Dr. Robert J. Herfkens

After earning his undergraduate degree from Creighton University (1970), Dr. Herfkens attended Loyola University's Stritch School of Medicine (M.D., 1974) before completing his residency in Internal Medicine at Loyola University Hospital. He then pursued residency and fellowship training in Radiology and Nuclear Medicine at the University of California, San Francisco where he was a pioneer in both CT and MRI. While at UCSF he contributed to clinical care at Franklin Hospital in San Francisco, Merritt Hospital in Oakland, and David Grant Hospital at the Travis Air Force Base. His career then took him to Duke University Medical Center where he developed their MRI program, and then Cedars-Sinai Medical Center before settling at Stanford.

Dr. Herfkens first joined Stanford as an Acting Associate Professor in 1989 and became Associate Professor the following year. Throughout his tenure, he held multiple leadership positions, including Acting Director for the Division of Nuclear Medicine (1993-1994), Director of Destination Digital – PACS (2001-2014), and Co-director of PET/CT (2002-2004). He held the positions of Director of MRI and Associate Chair for Clinical Technology beginning in 1996 and 2002, respectively, until he retired in 2020.

His impact on the department was broad and deep, creating the infrastructure for the validation of new MRI methods and served as the MRI safety guru, which ultimately benefited innumerable Stanford patients. He modernized imaging equipment across Stanford Hospital and its clinics and enabled rapid clinical growth. Beyond traditional imaging modalities, Dr. Herfkens oversaw the transition from physical image films to digital radiology.

Dr. Herfkens was especially recognized for his work in cardiovascular imaging with MRI, CT, and PET. His research helped establish MRI as an essential tool for diagnosing heart disease, managing cardiovascular complications of Marfan Syndrome, evaluating aortic dissections, and assessing myocardial function. He authored or co-authored over 200 peer-reviewed publications, 28 book chapters, and 3 books. His innovative work was also been awarded five USPTO patents.

Parallel to his clinical and research achievements, Dr. Herfkens was an exceptional educator and mentor. Dr. Herfkens organized numerous continuing medical education courses that brought advanced imaging knowledge to radiologists across the globe. His expertise in developing and refining MRI techniques made him a sought-after visiting professor and lecturer worldwide, leading him to deliver hundreds of invited lectures at major international conferences.

“Bob had ‘broad shoulders’. He would take on any task in the department that was needed, in addition to mentoring students and doing his own clinical work and research. Bob was a thoughtful and kind mentor, and great citizen of the department.”

– Garry Gold, MD, former Chair of Radiology

“Bob leaves a remarkable legacy of inspiring a passion for MRI and a commitment to excellence in a generation of scientists and physicians— many of whom now strive to extend his influence across the country and around the world.”

– Shreyas Vasanawala, former Director of MRI and current Stanford Children’s Radiologist-in-Chief

Dr. Herfkens contributed exceptional service for the International Society for Magnetic Resonance in Medicine (ISMRM). He was the Chair of the Safety Committee, member of the Board of Directors, and served as President from 1998-1999. He served on editorial boards for prestigious journals including Circulation, Magnetic Resonance in Medicine, and Radiology. His numerous honors included the Lauterbur Award (multiple years), the Winthrop Award, and Stanford Hospital and Clinics' "Excellence in Clinical Service and Patient Care Award" (2012). That same year, he was named to the Council of Distinguished Investigators of the Academy of Radiology Research. Dr. Herfkens was also elected Fellow of the ISMRM, American Heart Association, and Council on Cardiovascular Radiology (all 2001).

“Despite all his academic achievements, Bob was never boastful. He remained a kind and generous soul, steadfastly loyal to family and friends. Although he left us too soon, he had an extraordinary career and left an indelible mark on the field of body MRI. All who were privileged to know him were proud to call him our friend,” said R. Brooke Jeffrey, Professor of Radiology, Emeritus, and close personal friend of Dr. Herfkens. Those who knew him speak of not only his professional impact but also his personal impact, with almost everyone remarking that underneath Dr. Herfkens’s gruff exterior was a deeply kind and caring soul.

His children sharing that his work at Stanford and in radiology was the passion of his life. Outside of work, Dr. Herfkens also had varied hobbies, including his two dogs - both Barbets - who were very important to him later in life. Having grown up in the plains of South Dakota, Dr. Herfkens also appreciated the beauty of nature and loved sailing and aviation. In fact, he earned his pilot’s license at an early age and flew former Senator George McGovern around South Dakota on his campaign stops.

Dr. Herfkens’s wife, Tricia Herfkens, passed away on January 19, 2025. Dr. Herfkens is survived by his son Garrett Herfkens, Garrett's wife Becky Scott, their son Teddy, his daughter Meagan Hency, her husband Kyle Hency, and their children Skip, Jackson and Hadley.

Reflections from his colleagues