American College Of Surgeons - Inspiring Quality: Highest Standards, Better Outcomes

ACS Clinical Scholar in Residence Mentors

Clifford Ko, MD, MS, MSHA, FACSClifford Ko, MD, MS, MSHA, FACS, Director, Division of Research and Optimal Patient Care, American College of Surgeons (ACS), Chicago, IL

Dr. Ko is the Director of the American College of Surgeons National Surgical Quality Improvement Program® (ACS NSQIP® ), and professor of surgery at the University of California, Los Angeles. He is a double board-certified surgeon, specializing in general and colorectal surgery, and a formally trained health services researcher. Prior to working at the ACS, he served as a research scientist at the RAND Corporation. Dr. Ko has published more than 150 peer-reviewed articles, written 20 book chapters, and received peer-reviewed funding from several sources including the National Institutes of Health. He has extensive experience in guiding residents and fellows conducting research on health outcomes.

Karl Bilimoria, MD, MS,Karl Bilimoria, MD, MS, Northwestern University, Chicago, IL

Dr. Bilimoria is a Faculty Scholar at the ACS and assistant professor of surgery at Northwestern University’s Feinberg School of Medicine, Chicago, IL. He is Director of the Surgical Outcomes and Quality Improvement Center at Northwestern. Dr. Bilimoria earned his undergraduate degree from Northwestern University and his medical degree from the Indiana University School of Medicine, Indianapolis. He subsequently undertook a research fellowship at the National Institutes of Health. He then completed his general surgery residency and Master’s degree in Clinical Research at Northwestern University in Chicago. He went on to a surgical oncology fellowship at the M.D. Anderson Cancer Center in Houston, TX. His clinical practice is focused on melanoma, sarcoma, and breast cancer.

Dr. Bilimoria was the first ACS Clinical Scholar in Residence in 2005. During his two years at the ACS, Dr. Bilimoria performed numerous studies focused on examining and improving the delivery of care for surgical oncology patients. He used the National Cancer Data Base (NCDB) for many of these studies. In addition, Dr. Bilimoria worked extensively on ACS NSQIP to assess hospital surgical quality. He has published more than 70 peer-reviewed articles in this area of research.

Mark E. Cohen, PhDMark E. Cohen, PhD, Senior Statistician, Continuous Quality Improvement, Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, IL

Dr. Cohen received a PhD in psychology from the University of Illinois, Chicago, and also completed graduate-level coursework in applied statistics at DePaul University, Chicago. Dr. Cohen was a National Institutes of Health post-doctoral fellow at the University of Wisconsin, Madison, and taught at Lake Forest College, Lake Forest, IL. Before coming to the College in 2008, he worked at a U.S. Navy Medical Research Laboratory for 28 years as a statistician and as technical (research) director. Dr. Cohen has authored or co-authored 90 peer-reviewed articles. His work focuses on generating models and improving modeling methodologies for hospital quality assessments reported in the ACS NSQIP Semi-Annual Report, and on ad hoc research projects conducted in support of the ACS NSQIP mission. These research projects are most often collaborative efforts involving ACS NSQIP consultants and clinical scholars.

Bruce L. Hall, MD, PhD, MBA, FACSBruce L. Hall, MD, PhD, MBA, FACS, received his MD and PhD from the NIH Medical Scientist Training Program at Duke University, Durham, NC, and later obtained an MBA from Harvard Business School, Boston, MA. Dr. Hall holds dual appointments as associate professor in the department of surgery at Washington University/Barnes-Jewish Hospital and the Olin Business School, St. Louis, MO. His clinical expertise includes thyroid and parathyroid surgery, surgical oncology, and trauma care. He joined the John Cochran Saint Louis VA Medical Center Surgical Service as the associate chief of surgery in 2007. He is also a senior fellow of the Center for Health Policy at Washington University.

Dr. Hall has focused his research on the evaluation of quality in surgery. He has particular interest in the theory of risk adjustment and advanced statistical techniques. He has directed the ACS NSQIP at his hospital since 2001. Nationally, Dr. Hall co-chairs the Measurement and Evaluation Committee for the ACS NSQIP, serves on the ACS NSQIP Policy Advisory Committee and the ACS Patient Safety and Quality Committee, represents the ACS to the National Quality Forum, and is a member of the physician engagement group for The Joint Commission. Dr. Hall has mentored a large number of students and residents conducting health outcomes research.