Clinical Staff

Dr. Longman is the Director of the Jill Roberts Center for Inflammatory Bowel Disease at Weill Cornell Medicine.  He is a gastroenterologist and a mucosal immunologist focused on the care of patients with IBD.  He has expertise in evaluating and treating patients with extra-intestinal manifestations of IBD with a particular focus on joint inflammation or spondyloarthritis associated with IBD.  His research focuses on defining the cellular and molecular mechanisms underlying host-microbiota interactions that drive the pathogenesis of both mucosal and systemic inflammation in IBD.  In addition, he leads a clinical trial studying the role for fecal microbiota therapy in the treatment of ulcerative colitis.  Dr. Longman’s work has been published in leading scientific journals and he has received awards from the NIH, Crohn’s and Colitis Foundation, NY Crohn’s Foundation, Kenneth Rainin Foundation, Charina Foundation, and Irma T. Hirschl Trust for this work.

More information on Dr. Longman, including insurance plans he accepts, can be found on his Full Clinical Profile.

Dr. Scherl is the founding director of the Jill Roberts Center for Inflammatory Bowel Disease (JRC), which she established at Weill Cornell Medicine/NewYork-Presbyterian Hospital in 2006. Under her direction, JRC has experienced exciting growth. Dr. Scherl, who is the Jill Roberts Professor in Clinical Medicine at Weill Cornell, is an internationally renowned expert in treating patients with ulcerative colitis and Crohn’s disease. She has been published extensively, and is a principal investigator on multiple clinical trials. As she searches for an IBD cure, Dr. Scherl’s commitment to patient care is the driving force of JRC.

More information on Dr. Scherl, including insurance plans she accepts, can be found on her Full Clinical Profile.

Dr. Dana Lukin is an Associate Professor of Clinical Medicine (Pending) and the Clinical Director of Translational Research for the Jill Roberts Center. He has a focus on the clinical management of complex and treatment-refractory inflammatory bowel disease and is actively involved in the clinical trials program at the center.  His research interests include real world experience with new and emerging IBD therapies, biomarker development and validation, and clinical research in IBD. Dr. Lukin serves as the director of the advanced fellowship program in IBD. He is the co-chair of the Crohn’s and Colitis Foundation New York Chapter Medical Advisory Committee and is actively involved in IBD patient and medical educational initiatives.

More information about Dr. Lukin, including insurance plans he accepts, can be found on his Full Clinical Profile.

Dr. Jacob joined JRC in July 2008. She is an Assistant Professor of Clinical Medicine and the Director of Interdisciplinary Education. She has given numerous presentations on women’s IBD issues, particularly concerning IBD-related fertility issues and the safety of IBD medications during pregnancy. Dr. Jacob is a an investigator on multiple clinical trials and an author of numerous published papers concerning IBD.

More information on Dr. Jacob, including insurance plans she accepts, can be found on her Full Clinical Profile.

Dr. Abramowitz joined JRC in July 2015 as an Assistant Professor of Medicine. She is the primary co-investigator on several projects characterizing IBD in the Afro-Caribbean population, and has presented her work at several national meetings.

More information on Dr. Abramowitz, including insurance plans she accepts, can be found on her Full Clinical Profile.

Dr. Laura Sahyoun is an assistant professor of medicine at the Jill Roberts Center for IBD at Weill Cornell Medicine, specializing in the care of patients with inflammatory bowel diseases. She completed her medical school, internal medicine residency, and chief residency at Rutgers New Jersey Medical School followed by gastroenterology fellowship at Yale New Haven Hospital, where she was chief fellow. She completed a subspecialty training year in inflammatory bowel disease at New York Presbyterian Hospital, Weill Cornell Medicine. Her research interests include healthcare inequities and socioeconomic determinants of health, and utilization of intestinal ultrasound in guiding treatment management for Crohn's disease (CD) and ulcerative colitis (UC). Dr. Sahyoun is committed to providing high quality patient care, is active in clinical trials, and contributes to multicenter collaborative research efforts to advance knowledge and treatment of IBD. She is an active member of the American College of Gastroenterology and the Crohn's and Colitis Foundation.

Dr. Michael Mintz specializes in the care of patients with inflammatory bowel disease, including ulcerative colitis and Crohn’s disease. He is an assistant professor of medicine and member of the Jill Roberts Center for IBD at Weill Cornell Medicine.  Dr. Mintz attended medical school at Stony Brook University, where he was elected to the alpha omega alpha (AOA) medical honor society.  He completed his medical residency training at Massachusetts General Hospital and Harvard Medical School. He then did his gastroenterology fellowship with subspecialty training in inflammatory bowel disease at New York Presbyterian Hospital- Weill Cornell Medicine. Dr. Mintz is a co-investigator in multiple clinical trials exploring novel advanced therapeutics in both ulcerative colitis and Crohn’s disease. He sees patients in both Manhattan and Brooklyn.

More information about Dr.Mintz can be found on his physician's profile 

Dr. Gemei is the 2024-2025 advanced fellow for the Jill Roberts Inflammatory Bowel Disease Center. He completed his gastroenterology fellowship at New York Presbyterian - Queens, and his internal medicine residency at Boston University Medical Center. He is passionate about clinical education and was awarded the "Fellow of the Year" award during his gastroenterology fellowship for his leadership in house staff education. He has presented multiple abstracts at national and local gastroenterology meetings. As the advanced inflammatory bowel disease fellow, Dr. Gemei is involved with multiple ongoing clinical trials with Jill Roberts Inflammatory Bowel Disease Center.