American Board of Internal Medicine (ABIM)ABIM is a physician-led, non-profit, independent evaluation organization driven by doctors who want to achieve higher standards for better care in a rapidly changing world.
Since its founding in 1936 to answer a public call to establish more uniform standards for physicians, Certification by the American Board of Internal Medicine (ABIM) has stood for the highest standard in internal medicine and its 20 subspecialties. Certification has meant that internists have demonstrated – to their peers and to the public – that they have the clinical judgment, skills and attitudes essential for the delivery of excellent patient care.
Harrison's® Review Questions by 
The Brigham Intensive Review of Internal Medicine: Question & Answer Companion by 
The Brigham Intensive Review of Internal Medicine by 
MedStudy: Internal Medicine 2020 Video Board Review
