Christopher L. Barley, M.D. is a leading internist in New York City specializing in a variety of different health care services, including preventative medicine, treatment for chronic illnesses, physical exams, & travel medicine. Dr. Barley can diagnose & treat numerous conditions affecting the entire body, such as cancer, heart disease, diabetes, osteoporosis, vitamin deficiencies, & common illnesses, to name a few. He is dedicated to identifying diseases ahead of time in order to properly treat these illnesses before they have advanced into later stages. Dr. Barley is also a travel doctor, administering vaccines prior to travel, immediate care while traveling, & treatments following travel if necessary. He is one of the few internists who continue to make house calls for patients who are unable to visit our internal medicine office in NYC. In addition to treating patients in the United States, our internist also provides travel care for underdeveloped countries overseas, administering vaccines & state-of-the-art treatments for those in need.