The Washington Manual of Outpatient Internal Medicine Review Weighted Numerical Score: 96/100 - 4 Stars! **Description** This is an update of the 2010 first edition of the The Washington Manual of Outpatient Internal Medicine. This and other manuals from Washington University continue to be the go-to pocket references for housestaff in residency training programs. **Purpose** The stated purpose is to provide a reference on the common ambulatory medical problems encountered in the outpatient office as well as a companion to The Washington Manual of Medical Therapeutics, 34th edition, Godara et al. (Lippincott Williams & Wilkins, 2014). **Audience** Although the focus remains on the needs of the medicine housestaff of Washington University/Barnes-Jewish Hospital, this is a helpful pocket reference for all who practice outpatient medicine, including general internal medicine specialists or subspecialists. While not positioned as such, it is also a mine of essential information for family medicine physicians and physician assistants. Additionally, it is a tremendous reference source for subspecialists, as it incorporates many details that they would not have the opportunity to stay on top of. **Features** Very much like its predecessor, this is an easy-to-use, pocket-sized manual for house officers. The chapters are divided according to the usual organ systems. Each chapter has sections on the general principles of relevant anatomy and physiology, how to make the diagnosis, how to treat, and what follow-up is appropriate. There are simple figures and tables of relevant comparisons, along with a superb index. **Assessment** This is an excellent book for housestaff and attendings who practice in the outpatient setting. I recommend it highly to all. It is exceptionally easy to carry, use, and find information with minimal effort. The Inkling version is extremely handy and easy to use. Reviewed by Vincent F Carr, DO, MSA, FACC, FACP(Uniformed Services University of the Health Sciences) on behalf of Doody's Review Service