American College of Physicians (ACP)
The ACP is the largest medical-specialty organization and second-largest physician group in the United States specializing in internal medicine (IM) and IM subspecialties such as gastroenterology and cardiology.
The ACP list may be rented for physician recruitment only by current advertisers in an ACP publication defined as having purchased at least a 1/4 page display ad in ACP Hospitalist, ACP Observer/Internist, ACP Journal Club, or Annals of Internal Medicine within the last three months at the time the list request is made.