COMMENTARYWhy Don Berwick Is Almost Right How Public Health Quality Improvement Operates Within Complex SystemsBeitsch, Leslie M. MD, JD; Moran, John PhD, MBA, CMQ/OE, CQIA, CMC; Duffy, Grace CMQ/OE, CQIA, CLSSMBBAuthor Information Center for Medicine and Public Health, Florida State University College of Medicine, Tallahassee (Dr Beitsch); Public Health Foundation, Washington, District of Colombia (Dr Moran and Ms Duffy); and University of Minnesota School of Public Health, Minneapolis (Dr Moran). Correspondence: Leslie M. Beitsch, MD, JD, 1115 W Call St, Tallahassee, FL 32306 ([email protected]). Disclosure: The authors declare no conflicts of interest. Journal of Public Health Management and Practice: January/February 2012 - Volume 18 - Issue 1 - p 70-73 doi: 10.1097/PHH.0b013e31822ca3d3 Buy Metrics In Brief In this commentary the authors offer explanation for some differences between health care and public health quality improvement. The authors also provide a model that may help guide health departments as they navigate implementation of quality improvement in the complex public health systems in which they practice. © 2012 Lippincott Williams & Wilkins, Inc.