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Christopher John Sonnenday MD



Christopher Sonnenday, M.D., M.H.S., is the Surgical Director of Liver Transplantation for Michigan Medicine and serves as Associate Chair for Clinical Affairs for the Department of Surgery at the University of Michigan. He is an Associate Professor in the Department of Surgery, Section of Transplantation, and Associate Professor of Health Management and Policy at the School of Public Health. Dr. Sonnenday received his medical degree from Vanderbilt University in 1997, and went on to complete his General Surgery residency at the Johns Hopkins University in June of 2005. While a research fellow in transplantation from 2000 to 2003, he completed a Masters of Health Sciences in Clinical Investigation at the Bloomberg School of Public Health in 2003. After completion of his residency, Dr. Sonnenday continued on at Johns Hopkins as a Fellow in Surgical Oncology and Instructor of Surgery until 2006, and he completed a fellowship in abdominal transplant surgery at the University of Michigan in 2008.

His primary academic and research interests include the study of frailty and sarcopenia in liver transplant candidates, novel methods of patient selection in liver transplantation and hepatobiliary surgery, and quality collaboratives in transplantation.

Clinical Specialization: 

Dr. Sonnenday's clinical interests focus on liver transplantation, hepatobiliary and pancreatic surgery, and general surgery procedures in patients with advanced liver disease. He sees patients in the Multidisciplinary Liver Tumor Clinic at the University of Michigan Rogel Cancer Center and the Transplant Clinic at the Taubman Center. 


Medical School or Training
  • Vanderbilt University School of Medicine, 1997
  • Johns Hopkins Hospital, Surgery, MD, 2005
  • Surgical Oncology, Johns Hopkins Hospital, 2006
Board Certification
  • Surgery


Dr. Sonnenday's research interests include investigation of the patterns of utilization and outcomes of hepatobiliary surgery and liver transplantation, geographic and racial disparities in the utilization of and access to solid organ transplantation, treatment of locally advanced pancreatic cancer, and the multidisciplinary treatment of hepatobiliary malignancies.