About
Dr. Christopher Barley earned his BS in Biology from Syracuse University in 1989 and his MD from George Washington University School of Medicine in 1993. He completed his residency in internal medicine at New York Presbyterian Hospital, where he also trained at Memorial Sloan-Kettering Hospital and the Hospital for Special Surgery. He holds board certification in internal medicine as a Diplomat of the American Board of Internal Medicine since 1996.
Dr. Barley served as Clinical Instructor in Medicine at Cornell University Medical College from 1996 to 2000 and has held the rank of Clinical Assistant Professor there ever since. He teaches physical diagnosis to medical students, interns, and residents at New York Presbyterian Hospital as an Assistant Attending Physician. His clinical focus spans internal medicine, preventive medicine, travel medicine, and cancer screening, with deep expertise in Lyme disease, Babesia, and Ehrlichiosis. Castle Connolly has named him a top doctor for over ten years. The American Registry honored him as one of America's Most Honored Professionals in 2017, placing him in the top 5% of the nation's physicians. Beyond his practice, Dr. Barley serves as President of CITTA USA, an organization that delivers free medical care to more than 450,000 people across India, Nepal, and Mexico. Following the 2015 earthquake in Nepal, he traveled there for search and rescue efforts and later helped establish the Dr. Christopher Barley Aatmiya Community Hospital in Sindhuli, serving up to 100,000 residents. He also serves as a scientific advisor to several biotech companies and as a health care policy advisor to local, state, and national politicians.
Education & Training
Undergraduate
Syracuse University, BS in Biology, 1989
Medical School
George Washington University, MD, 1993
Residency
Internal Medicine, The New York Hospital (New York Presbyterian Hospital), 1993-1996; also trained at Memorial Sloan-Kettering Hospital and Hospital for Special Surgery
Additional Training
Clinical Instructor in Medicine, Cornell University Medical College, 1996-2000; Clinical Assistant Professor of Medicine, Cornell University Medical College, 2000-present
Certifications
Conditions Treated
Who is Dr. Barley right for?
Dr. Barley suits adults who want a thorough, relationship-driven internist in Manhattan. Patients focused on cancer screening, early detection, and preventive medicine find his approach well matched to their goals. He is a strong fit for executives seeking comprehensive physicals and same-day diagnostic results. Travelers needing pre- and post-travel care, vaccinations, or international medical coordination also benefit from his expertise. Patients managing complex chronic conditions such as heart disease, thyroid disorders, or Lyme disease will find his broad clinical range valuable.
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Frequently Asked Questions
Dr. Barley treats a wide range of conditions in adults. These include heart disease, hypertension, high cholesterol, diabetes, thyroid disorders, osteoporosis, kidney and liver disease, and obesity. He also treats Lyme disease, Babesia, and Ehrlichiosis. His cancer screening work covers prostate, breast, ovarian, lung, colon, skin, testicular, and cervical cancers. He addresses men's and women's sexual health, including erectile dysfunction, low testosterone, BRCA gene mutations, and polycystic ovary syndrome.
Yes. Dr. Barley holds board certification in internal medicine as a Diplomat of the American Board of Internal Medicine. He earned that certification in 1996 after completing his residency at New York Presbyterian Hospital and has maintained it since.
Dr. Barley completed his residency at New York Presbyterian Hospital from 1993 to 1996. His training also included time at Memorial Sloan-Kettering Hospital and the Hospital for Special Surgery. He earned his MD at George Washington University School of Medicine in 1993.
Yes. Dr. Barley serves as Clinical Assistant Professor of Medicine at Cornell University Medical College, a position he has held since 2000. He also teaches physical diagnosis to medical students, interns, and residents at New York Presbyterian Hospital as an Assistant Attending Physician.
Yes. Dr. Barley travels to patients' homes, hotels, and businesses throughout New York City. He schedules these visits in addition to his standard in-office appointments. Patients who cannot travel or prefer care in a familiar setting can request a house call directly through his office.
Dr. Barley provides comprehensive travel medicine care before, during, and after international trips. He administers travel vaccinations and offers destination-specific health advice prior to departure. If a patient becomes ill while abroad, Dr. Barley coordinates appropriate medical attention and can refer to specialists in the patient's location.
Dr. Barley screens for a broad range of cancers, including prostate, breast, ovarian, lung, colon, skin, testicular, and cervical cancers. He uses his in-house lab and radiology unit to support early detection. For patients who need specialized oncology care, he coordinates referrals to leading specialists domestically and internationally.
Dr. Barley operates one of the nation's premier Lyme disease testing labs within his Manhattan office. The lab tests not only for Lyme disease but also for Babesia and Ehrlichiosis. This in-house capability allows him to deliver results faster and begin treatment sooner than sending samples to outside labs.
Yes. Castle Connolly has named Dr. Barley a top doctor for over ten years. In 2017, the American Registry recognized him as one of America's Most Honored Professionals, placing him in the top 5% of the nation's physicians.
Dr. Barley serves as President of CITTA USA, an organization that delivers free medical care to more than 450,000 people in India, Nepal, and Mexico. After the 2015 earthquake in Nepal, he traveled there for search and rescue. He later helped build the Dr. Christopher Barley Aatmiya Community Hospital in Sindhuli, Nepal, which serves up to 100,000 local residents.
Doctor profile last updated June 6, 2026