Program Faculty | Surgery | University of Nebraska Medical Center

Matt Longo, MD, FACS Professor Chief of Vascular Surgery Dr. Longo received his medical degree from the University of Nebraska Medical Center in 1996, completing his residency in general surgery at UNMC in 2003, as well as a two-year fellowship in Vascular Surgery in 2005 from Northwestern University, Feinberg School of Medicine, Chicago, IL. He is board certified in both General and Vascular Surgery. Dr. Longo was named Chief of Vascular Surgery at UNMC in February 2011. He served as Fellowship Program Director 2015 - 2020. In addition to his UNMC appointments, he is a Clinical Instructor of Vascular Surgery at Creighton University and an attending surgeon at the Nebraska/Western Iowa VA Medical Center. He is a member of several hospital committees and professional societies. He has been a contributing author of many publications, book chapters and abstracts. As a principal investigator, Dr. Longo has received numerous grants for his research. He has been a review section consultant for the Journal of Vascular Surgery Distinguished since 2007 and an Ad Hoc Reviewer for BioMed Central Medical Research Methodology since 2011.
Jonathan R. Thompson, MD Assistant Professor Vascular Surgery Fellowship Director, Vascular Surgery Fellowship Program Dr. Thompson received his medical degree from the University of Wisconsin School of Medicine and Public Health, Madison, WI in 2009, completed his general surgery residency at the University of Nebraska Medical Center, Omaha, NE, 2016 and vascular surgery fellowship at the University of Michigan, Ann Arbor, MI in 2018. He is board certified in general surgery and vascular surgery. His clinical interest include complex endovascular surgery, peripheral arterial disease, splanchnic aneurysms, aortic dissection, and carotid occlusive disease. Dr. Thompson joined our team in August 2018, he served as the Fellowship Program's Associate Director, 2018-2020. He is current the Fellowship Program Director.
Jason Johanning, MD, MS, FACS Professor Vascular Surgery Dr. Johanning received his medical degree from the University of Kansas Medical Center, Kansas City, KS in 1994, completed his residency in general surgery at Saginaw Cooperative Hospitals, Inc., Saginaw, MI in 1999, and completed a two-year fellowship in vascular surgery from Geisinger Medical Center, Danville, PA in 2001. Dr. Johanning is board certified in both General Surgery and Vascular Surgery. His specialty training includes endovascular abdominal and thoracic aortic grafts and carotid artery stenting. He has a particular interest in chronic compartment syndrome in competitive athletes. His academic appointments include Professor of Vascular Surgery at UNMC, serving as Chief of Vascular Surgery from 2009-2011. He is active in the VA Medical System having served as Chief of Surgery at Nebraska/Iowa VA Medical Center and currently serves as VISN Chief Surgical Consultant. His clinical interests focus on the rapid identification of the frail patient to optimize outcomes. Dr. Johanning has been the recipient of numerous academic awards and honors and is active in resident and community education.
Jason MacTaggart, MD, FACS Associate Professor Vascular Surgery Dr. MacTaggart received his medical degree from the University of Iowa College of Medicine, Iowa City, IA in 2000. He completed his residency in general surgery from UNMC in 2007 and his vascular fellowship from University of California, San Francisco, CA in 2009. Dr. MacTaggart is board certified in Vascular Surgery. In addition to his academic appointment at UNMC, Dr. MacTaggart is an attending surgeon at Creighton University, Nebraska/Western Iowa VA Medical Center and Children’s Hospital. He is a member of numerous professional societies and has received several honors and awards. He is currently a review section consultant for the Journal of Vascular Surgery and is active in research.
Iraklis Pipinos, MD Professor Vascular Surgery Dr. Pipinos received his medical degree from the University of Crete Medical School, Crete, Greece in 1992. He completed his general surgery residency in 2000 from the Henry Ford Hospital, Detroit, MI where he also completed his fellowship in vascular and endovascular surgery in 2002. Dr. Pipinos is board certified in both General Surgery and Vascular Surgery. His research interests include exploring the ischemic myopathy of the legs of patients with Peripheral Arterial Disease (PAD) and extending his research in the area of vascular biology. In addition to his academic appointment in Vascular Surgery, Dr. Pipinos is a courtesy faculty member for the department of Cellular and Integrative Physiology at UNMC and Chief of Vascular Surgery at Nebraska/Western Iowa VA Medical Center.
Jason Cook, MD, PhD Assistant Professor Vascular Surgery Dr. Cook received his doctorate of philosophy in 2013 and his medical degree in 2015 from the Icahn School of Medicine at Mount Sinai in New York City, NY. He completed his integrated vascular surgery training at Washington University in St. Louis, MO in 2020. His clinical interests include complex endovascular surgery, thoracic outlet syndrome, peripheral arterial disease, caval and iliofemoral deep vein thrombosis, aortic pathology including aneurysms and dissection, as well as carotid occlusive disease. Dr. Cook’s translational research focus is on furthering our understanding of aneurysm pathogenesis in congenital aortopathies.