Our team

True North PSO leadership have spent decades improving patient safety outcomes across hospitals and systems.  They are nationally-recognized quality experts, clinicians, and educators, dedicated to improving patient care across participant sites and regions.

Mark Jarrett, MD, MBA, MS

Mark Jarrett, MD, MBA, MS

Executive Director

As chief quality officer for Northwell Health, Mark Jarrett, MD, is responsible for system-wide initiatives in quality and safety. Dr. Jarrett is also Northwell’s associate chief medical officer and a professor of medicine at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell. He previously served as chief medical officer and DIO at Staten Island University Hospital (SIUH). Prior to that appointment, Dr. Jarrett was director of Rheumatology at SIUH from 1982-1999. Dr. Jarrett has extensive research experience, and has been published on the subject of the immune response in systemic lupus erythematosus, quality and cybersecurity in health care. Dr. Jarrett is board certified in internal medicine and rheumatology. He is a Fellow of the American College of Physicians and the American College of Rheumatology, and past president of the Richmond County Medical Society. Dr. Jarrett earned his medical degree from New York University School of Medicine. He completed his residency in internal medicine at Montefiore Medical Center, and a fellowship at Montefiore Medical Center and Albert Einstein College of Medicine. Dr. Jarrett also holds an MBA from Wagner College and an MS in Medical Informatics from Northwestern University.

Karen Nelson, RN, MBA, CPHQ

Karen Nelson, RN, MBA, CPHQ

Quality Director

As deputy chief quality officer, Karen Nelson, RN, oversees strategy and development for clinical excellence, quality and patient safety, as well as accreditation and regulatory affairs for Northwell Health. She holds the faculty position of assistant professor of science education at the Donald and Barbara Zucker School of Medicine at Hofstra/Northwell and is on the faculty of the Northwell Center for Learning and Innovation’s Physician Leadership Development Program.

Ms. Nelson began her career as a critical care nurse holding a variety of clinical positions in a tertiary care hospital. She later became a hospital administrator where she managed strategy and operations for several departments. In her prior role as vice president she was instrumental in establishing the Northwell Institute for Clinical Excellence and Quality. She created a formal quality reporting structure for the health system’s joint ventures and was part of the team that developed a feasibility study to help stabilize five financially distressed hospitals.

Due to Ms. Nelson’s diligent efforts, Northwell has received many prestigious awards over the years, including such national recognitions as the American Hospital Association’s 2018 Quest for Quality Prize, the 2015 John Q. Sherman Award for Excellence in Patient Engagement, the 2015 National Patient Safety Foundation Award, the 2014 Joint Commission on National Quality Forum’s John M. Eisenberg Award and the 2010 National Forum Quality Award.

Ms. Nelson has co-authored peer-reviewed articles in journals such as The Joint Commission Journal on Quality and Patient Safety and the Annals of Surgery. She has presented nationally and internationally on a wide range of quality and patient safety topics.