Lab Members

Ken Catchpole, PhD

Director, Surgical Safety and Human Factors Email:

Learn More

Ken Catchpole, PhD, is director of surgical safety and human factors research. He has pioneered direct observation and human factors improvement techniques in surgery. Catchpole joined Cedars-Sinai from the University of Oxford in 2011 to embark on projects in trauma, hand offs, teamwork and systems redesign. He is best known for his work translating expertise from motor racing teams to improve high-risk surgical hand offs.

Eric J. Ley MD, FACS

Eric Ley, MD

Medical Director, Surgical Critical Care Unit Email:

Learn More

Eric Ley, MD, is a surgeon specializing in improving trauma care systems. He is medical director of the Cedars-Sinai surgical critical care unit and program director for the trauma and critical care fellowship.

Alex Ehrhart

Alexander Ehrhart, MBB, MCA

Manager, Intervention Services/Surgical Education/Surgical Analytics and Improvements Email:

Learn More

Alexander Ehrhart, MBB, MCA, is a senior continuous improvement practitioner and operations leader with more than 13 years of results-based experience in the healthcare and financial services industries. He brings cross-functional expertise in the development and implementation of business transformation programs with strong focus on relational interactions between people, process and technology. Among numerous accomplishments, Alex is a President’s Award recipient at the University of Colorado Hospital for his work in redefining the entire patient care delivery model in the cancer center resulting in a 78 percent reduction of patient wait times for infusion treatments.

Daniel Shouhed, MD

Faculty, Minimally Invasive Surgery Email:

Learn More

Daniel Shouhed, MD, is faculty of minimally invasive surgery in the Department of Surgery. He spent his research year under the mentorship of Bruce Gewertz, MD, investigating human factors in surgery, specifically looking at flow disruptions during trauma care. He is planning on pursuing a specialty in minimally invasive surgery with plans for continuing research in human factors related to the field of surgery.

Jennifer Anger, MD, MPH

Jennifer Anger, MD

Associate Professor of Urology and Associate Director of Urological Research Email:

Learn More

Jennifer Anger, MD, received her bachelor's degree in integrative biology from the University of California, Berkeley, her master's degree from the UCLA School of Public Health and earned her medical degree at the Keck School of Medicine, University of Southern California. Her research has focused on the quality of care for women with urinary incontinence and pelvic prolapse, including the safety and efficiency of robotic-assisted surgery.