Many physicians who provide medical services to post-acute care facilities do so in addition to their work in their own practices and making hospital rounds. It’s because of this that it becomes understandable that their practices often take priority. It’s also understandable if returning calls to the facility might be put off until the end of a long day, or quick facility visits get squeezed into a busy week – or skipped. General Medicine is a leader in post-hospitalist medicine. It was more than 30 years ago when Dr. Thomas Prose had a vision to provide specialized care to patients in post-acute care facilities, whether long term or in transition between hospital and home. They care only for patients in post-acute care settings. Primary care physicians at traditional post-acute facilities typically care for as many as 1,000 patients. Post-hospitalists, on the other hand, care for 150 to 200 patients.

Role of internal medicine physicians

Internal medicine specialists, also known as general internal medicine specialists or general medicine physicians in Commonwealth countries,[10] are specialist physicians trained to manage particularly complex or multisystem disease conditions that single-organ-disease specialists may not be trained to deal with.[11] They may be asked to tackle undifferentiated presentations that cannot be easily fitted within the expertise of a single-organ specialty,[12] such as dyspnoea, fatigue, weight loss, chest pain, confusion or change in conscious state.[13] They may manage serious acute illnesses that affect multiple organ systems at the same time in a single patient, and they may manage multiple chronic diseases or "comorbidities" that a single patient may have.[14] General internal medicine specialists do not provide necessarily less expertise than single-organ specialists, rather, they are trained for a specific role of caring for patients with multiple simultaneous problems or complex comorbidities.[15]
Perhaps because it is complex to explain treatment of diseases that are not localised to a single-organ, there has been confusion about the meaning of internal medicine and the role of an "internist."[16] Internists are qualified physicians with postgraduate training in internal medicine and should not be confused with "interns",[17] who are doctors in their first year of residency training (officially the term intern is no longer in use).[18][19] Although internists may act as primary care physicians, they are not "family physicians," "family practitioners," or "general practitioners," whose training is not solely concentrated on adults and may include surgery, obstetrics, and pediatrics. The American College of Physicians defines internists as "physicians who specialize in the prevention, detection and treatment of illnesses in adults".[20] Internal medicine physicians have practiced both in clinics and in hospitals, often in the same day. Pressures on time have led to many internal medicine physicians to choose one practice setting, who may choose to practice only in the hospital, as a "hospitalist", or only in an outpatient clinic, as a primary care physician.[21]

Internal Medicine Subspecialties

Some internists choose to take additional training to "subspecialize" in a more focused area of internal medicine. Subspecialty training (often called a "fellowship") usually requires an additional one to three years beyond the basic three year internal medicine residency. Although physicians who have completed additional training in a particular area of internal medicine are frequently referred to by their area of subspecialty focus (for example, those who subspecialize in diseases of the heart are usually called “cardiologists”), all share the same basic internal medicine training and like general internists are also considered “internists.” The training an internist receives to subspecialize in a particular medical area is both broad and deep, and qualifies them to manage very complex medical issues and in many cases perform advanced clinical procedures.