Gary Christopher Guerrino, MD

Joshua L. Hartman, MD, is a gastroenterologist at NewYork-Presbyterian Medical Group Westchester and an assistant professor of medicine at Columbia University Medical Center. He performs surgeries at NewYork-Presbyterian Lawrence Hospital. Dr. Hartman see patients for general gastroenterology conditions as well as liver disease. He earned his medical degree from New York Medical College. He served his internship and residency at Icahn School of Medicine at Mount Sinai Hospital and his gastroenterology fellowship at Northwell Health. He is a frequent lecturer and has published research in various medical journals. Dr. Hartman is a member of the American College of Gastroenterology and the New York Society for Gastrointestinal Endoscopy.

Dr. David Kauvar, Assistant Professor of Medicine at Columbia University Medical Center, is Board Certified in Internal Medicine and Gastroenterology.Dr. Kauvar obtained his Medical Degree from the University of Colorado and completed his Internship and Residency in Internal Medicine at the University of California-San Diego. His Fellowships in Gastroenterology were completed at the University of Colorado, Denver and Beth Israel Hospital in Boston. Dr. Kauvar holds memberships in the American Society of Gastroenterology, and American of Gastrointestinal Motility.

Dr. Ifesinachi Nnaji is a board-certified physician at NewYork-Presbyterian Medical Group Westchester specializing in Family Medicine. Dr. Nnaji received her medical degree at Ross University School of Medicine and completed her residency in Family Medicine at Stony Brook Southampton Hospital. Dr. Nnaji is accepting new patients at 540 Gramatan Avenue, Mount Vernon, NY. To schedule an appointment, call 914-668-5944.