Humana

Heather Klavan, M.D.
Certified Gastroenterologist

Dr. Heather Klavan specializes in Gastroenterology and is a Clinical Assistant Professor at the NYU School of Medicine. She graduated summa cum laude with a degree in Neuroscience from Tulane University. She earned her medical degree with AOA honors from the Albert Einstein College of Medicine in NY with a distinction in gastroenterology research. Dr. Klavan then […]


Jerome S. Breslaw, M.D.
Certified Gastroenterologist

Dr. Breslaw is a well respected gastroenterologist whose very personal and caring approach to each of his patients as individuals is well respected and appreciated. He received his medical degree from Chicaco Medical School. He is board certified in both Internal Medicine and Gastroenterology. After serving in the US Navy for two years, he completed […]


John J. Ackert, M.D.
Certified Gastroenterologist

Based in Concorde Medical Group’s Kips Bay office, Dr. John Ackert is a highly regarded expert in gastroenterology. He received his medical training here in New York, having graduated from St. John’s University in Queens with a B.S. in Biology and from New York University’s School of Medicine. He went on to complete his medical […]


Edward M. Brettholz, M.D.
Certified Gastroenterologist

Dr. Edward Brettholz received his medical degree from the George Washington University School of Medicine. He completed his Internal Medicine residency at Cedars-Sinai Medical Center in Los Angeles, followed by a Gastroenterology fellowship at the University of California at Irvine and he is board certified in both Internal Medicine and Gastroenterology. Dr. Brettholz is currently […]


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 […]


James M. Salik, M.D.
Certified Gastroenterologist

Named five times as one of the city’s top Gastroenterologists by New York Magazine, Dr. James Salik provides primary care in addition to gastroenterology services. With an expertise in inflammatory bowel disease, irritable bowel syndrome and diseases of the liver, he offers his patients expert and compassionate care. A published researcher, Dr. Salik is a […]


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 […]


Alex Sherman, M.D.
Certified Gastroenterologist

Dr. Alex Sherman earned his bachelor’s degree from Columbia College and medical degree from the NYU School of Medicine. He completed his medical training at the Bronx Municipal Hospital Center and Albert Einstein College of Medicine. He went on to complete a fellowship in gastroenterology at the NYU Langone Medical Center. Dr. Sherman has published […]


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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