School of Medicine
Showing 21-30 of 34 Results
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Varvara A. Kirchner
Associate Professor of Surgery (Abdominal Transplantation) and, by courtesy, of Pediatrics
BioDr. Kirchner completed her medical school, surgical residency and multi-organ transplant fellowship in adult and pediatric liver, pancreas, kidney transplantation and total pancreatectomy with islet auto-transplantation at the University of Minnesota. She underwent further training in living donor liver transplantation and hepatobiliary surgery at the Asan Medical Center, Seoul, South Korea. Her clinical practice involves living and deceased donor liver and kidney transplantation in adult and pediatric patients as well as total pancreatectomy with islet auto-transplantation for patients with chronic and acute recurrent pancreatitis. She currently serves as Surgical Director of the Islet Cell Auto-Transplant at Stanford Children’s and Associate Director of the Living Donor Liver Transplant Program at the Division of Abdominal Transplantation. Dr. Kirchner’s research focuses on the biology of aging, cellular and solid organ transplantation. Her specific interests are in auto-islet transplantation, iPSC-derived hepatocyte therapies and liver regeneration. Dr. Kirchner's research on the impact of donor age on generation of iPSC-derived hepatocyte-like cells is supported by the NIA K08 Faculty Development Award. She is an active member of the American Society of Transplant Surgeons and the International Liver Transplantation Society.
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Derek M. Klarin, MD
Assistant Professor of Surgery (Vascular Surgery)
On Leave from 06/01/2024 To 05/31/2025BioDr. Klarin is a fellowship-trained vascular surgeon.
For each patient, he develops a comprehensive, compassionate care plan customized to individual needs. His goal is to help each patient achieve the best possible health and quality of life.
Dr. Klarin performs the full spectrum of diagnostic and treatment procedures for cardiovascular conditions. He treats carotid disease, peripheral artery disease, abdominal aortic aneurysm, venous thromboembolism, and other vascular diseases.
To help advance his field, Dr. Klarin has conducted research. The American Heart Association, Howard Hughes Medical Institute, and other organizations have provided grants to support his studies. He also has co-patented advances in predicting and scoring risk factors for cardiovascular disease and other conditions.
He has published extensively and co-authored more than 50 articles on new techniques and technology for diagnosing and treating cardiovascular disorders. His work has appeared in the Journal of Vascular Surgery, Circulation, JAMA, Nature Medicine, and other peer-reviewed journals.
He also has made many invited presentations to his peers. He has spoken at the Vascular Research Initiatives Conference presented by the Society for Vascular Surgery, the American Heart Association Scientific Sessions, and the annual meeting of the American Society for Human Genetics. Topics include risk factors for peripheral artery disease, the benefits of ultrasound screening for abdominal aortic aneurysm, and the impact of genetic variations on cardiovascular disease.
He is a member of the Global Lipids Genetics Consortium. He is a founding member of the Abdominal Aortic Aneurysm Genetics Consortium and the Peripheral Artery Disease Genetics Consortium. He is also a candidate member of the Society for Vascular Surgery. -
Lisa Marie Knowlton, MD, MPH, FACS, FRCSC
Associate Professor of Surgery (General Surgery)
BioDr. Knowlton is an Associate Professor of Surgery and an Acute Care Surgeon whose practice encompasses trauma surgery, emergency general surgery and surgical critical care. She is an NIH and ARPA-H funded researcher whose focus is on improving access to innovative, high- quality surgical care. She obtained her medical degree at McGill University and completed her general surgery residency at the University of British Columbia in Vancouver, Canada. Her desire to understand varied healthcare systems and develop solutions for vulnerable surgical populations led her to obtain an M.P.H. at the Harvard T.H. Chan School of Public Health and complete a research fellowship at the Harvard Humanitarian Initiative. After training as a Surgical Critical Care fellow at Stanford University Medical Center, she joined the faculty as an Assistant Professor of Surgery in early 2018. She was promoted to Associate Professor in the University Medical Line in 2023. Her institutional leadership roles include serving as the Unit Based Medical Director of the Surgical Intensive Care Unit, the Associate Vice Chair of Research for the Stanford Department of Surgery, the SHC Surgical AI Lead for Early Clinical Deterioration, and the Associate Program Director for the Surgical Critical Care fellowship.
Dr. Knowlton is board certified by the American Board of Surgery and the Royal College of Physicians and Surgeons of Canada. Dr. Knowlton’s areas of clinical interest include developing safe surgical solutions for anatomic visualization in the operating room, artificial intelligence prediction tools for detection early clinical deterioration of surgery patients, optimizing the management of critically ill patients and reducing venous thromboembolism events.
Her research focuses on improving access to high-quality and high-value surgical care, merging expertise in health economics, health equity and artificial intelligence to implement surgical innovations and health policy interventions. She leads novel work with the Department of Health Care Services focused on improving healthcare utilization through emergency Medicaid programs.
Dr. Knowlton’s research lab (https://med.stanford.edu/knowlton-lab.html) is funded by the Advanced Research Projects Agency for Health (ARPA-H), the National Institute of Health (NIMHD) through R21 and R01 grants, and the California Violence Prevention Center. She has also held funding through PCORI, the Department of Defense, the American College of Surgeons (the 17th C. James Carrico Faculty Research Fellowship), and the American Association for the Surgery of Trauma (AAST).
https://surgery.stanford.edu/news2/Knowlton-ARPA-H.html
She is active in national and international professional surgical societies, and recently served as the inaugural Chair of the Associate Member Council of the AAST. Dr. Knowlton has been recognized by the Association of Women Surgeons as both a ‘Shining Star’ and ‘Breaking the Glass Ceiling’ Leadership Scholar. She is also an American College of Surgeons Health Policy Scholar. Most recently, Dr. Knowlton was also selected as the 2023-24 U.S. ambassador for the James IV Surgical Association Traveling Fellowship program, where she will travel internationally to foster clinical and research collaborations. -
James R. Korndorffer, Jr. MD, MHPE, FACS
Associate Professor of Surgery (General Surgery)
BioJames R Korndorffer Jr MD MHPE FACS joined the Stanford Department of Surgery in December 2017 as the inaugural Vice Chair of Education. Dr. Korndorffer received his undergraduate degree in Biomedical Engineering from Tulane University where he graduated cum laude. He returned to Florida and received his medical degree from the University of South Florida College of Medicine. While there he served as class vice president and was selected as a student member for the LCME reaccreditation committee. His general surgery internship and residency was completed at The Carolinas Medical Center in Charlotte, NC.
Upon completion of his residency, Dr. Korndorffer went into private practice however his interest in teaching was so strong that after 8 years, he left a successful private practice and joined the faculty at Tulane University School of Medicine as a fellow in minimally invasive surgery and as an instructor in surgery. At the completion of the fellowship, he chose to stay at Tulane and joined the faculty as an Associate Professor of Surgery in 2005. He achieved the rank of Professor of Surgery in 2010. While at Tulane he served in numerous leadership roles. He was Vice Chair of the surgery department from 2012-17 as well as the Program Director for the surgical residency from 2006-17. As program director, he was responsible for redesigning the educational experience of the surgical residency after the catastrophic events of Hurricane Katrina. Additional medical school wide leadership roles he held included Assistant Dean for Graduate Medical Education (assistant DIO) and founding Medical Director for the Tulane Center for Advance Medical Simulation. Because of his passion for education, while working full time at Tulane, Dr. Korndorffer completed his Masters in Health Professions Education at the University of Illinois, Chicago.
He is actively involved in numerous national societies including service to the American Board of Surgery through membership on the editorial board of the Surgical Council on Resident Education and the EPA revision workgroup and EPA writing group. He serves as the inaugural chair of the research division for the Association for Program Directors in Surgery, and the inaugural co-chair of the Education Council for the Society of American Gastrointestinal and Endoscopic Surgeons. He also serves on the Board of Directors for SAGES. He has served the American College of Surgeons in numerous capacities including the ACS-AEI as Recorder, Program Chair and Research Committee Chair and as a member of the faculty development committee. He serves as an Associate Editor for the Journal of Surgical Education. He was recently inducted to membership in the Academy of Master Surgeon Educators.
He was one of the early adopters of the use of simulation for surgical training and has been actively involved in surgical education research since 2003. Some of the early work using proficiency-based training instead of time base training for skill acquisition. This has now become the norm. He is now actively involved investigating the role simulation education has in patient quality and healthcare system safety.
Dr. Korndorffer has published over 100 papers in peer reviewed journals, 10 book chapters and has had over 150 presentations at national meetings. Dr. Korndorffer’s clinical interests include minimally invasive surgery for gastrointestinal disorders and hernias. His research interests include surgical education, surgical simulation, patient safety, and patient care quality.