One Health/Great West

Hillel Tobias, M.D.
Specialist in Diseases of the Liver

Dr. Hillel Tobias is a Professor of Medicine at NYU School of Medicine. He is also the Medical Director of the NYU Liver Transplant Service and the founding partner of Concorde Medical Group. He specializes in diseases of the liver and is board certified in Internal Medicine, Gastroenterology and a Diplomat in Transplant Hepatology. He […]


Charles N. Friedlander, M.D.
Certified Gastroenterologist

Dr. Friedlander is one of the founding members of Concorde Medical Group. He is a nationally prominent gastroenterologist and is one of New York’s leading and most experienced gastrointestinal endoscopists. His major interest over the years, both in his practice and in his teaching students and house staff at New York University, has been integrating […]


Scott Weber, M.D.
Certified Gastroenterologist

Dr. Scott Weber practices Internal Medicine and Gastroenterology, with special interests in Irritable Bowel, Inflammatory Bowel, and Hepatitis. He is an Assistant Professor of Clinical Medicine at NYU School of Medicine. Dr. Weber earned his Bachelor of Science Degree from Cornell University, and his Medical Degree from NYU School of Medicine, where he was elected […]


Inessa Khaykis, M.D.
Certified Gastroenterologist

Dr. Inessa Khaykis practices gastroenterology with a specialty in advanced procedures such as Endoscopic Ultrasonography (EUS) with FNA and Capsule Endoscopy. Dr. Khaykis graduated with a degree in Medicine from Chelyabinsk Medical Academy. She completed her Internal Medicine residency, chief residency in Internal Medicine, as well as her fellowship in Gastroenterology at the NYU Langone […]


Jonathan Cohen, M.D.
Certified Gastroenterologist

Dr. Jonathan Cohen graduated from Harvard College and Harvard Medical School. He completed his residency at The Beth Israel Hospital in Boston, his fellowship in gastroenterology at UCLA in Los Angeles, and advanced fellowship in interventional therapeutic endoscope at The Wellesley Hospital in Toronto, Canada. Dr. Cohen is currently a Clinical Professor of Medicine at […]


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Our NYC Locations

232 East 30 Street
New York, NY 10016

233 Broadway
Suite 840
New York, NY 10279

100 Crosby Street
Suite 406
New York, NY 10012