As adoption of Electronic Health Record Systems (EHR-Ss) shifts from early adopters to mainstream, an increasingly large group of decision makers must assess what they want from EHR-Ss and how to go about making their choices. The purpose of this book is to inform that decision. This book explains typical needs of a variety of stakeholders, describes current and imminent technologies, and assesses the available evidence regarding issues in implementing and using EHR-Ss. Divided into four important sections—Needs, Current State, Technology, and Going Forward—the book provides the background and general notions regarding the EHRS and lays out the framework; delves into the historical review; presents a high-level view of EHR systems, focused on the needs of different stakeholders in the health care and the health enterprise; offers practical views of existing systems and current (and short-term future) issues in specifying a EHR system and deciding how to approach the institution of such a system; deals with technology issues, from front- to back-end; and describes where we are and where we should be going with EHR systems. Designed for use by chief information officers, chief medical informatics officers, medical liaisons to hospital systems, private practitioners, and business managers at academic and non-academic hospitals, care management organizations, and practices. The book could be used in any medical or health informatics course, at any level (undergrad, fellowship, MBA).