Gastroenterologist Mouen Khashab specializes in therapeutic endoscopy, and he oversees this group of practitioners across the Johns Hopkins enterprise. Nationally and internationally known in the field of interventional endoscopy, Dr. Khashab has contributed immensely to the field’s advancement as a minimally invasive means to treat gastrointestinal and pancreaticobiliary disorders. Dr. Khashab earned his medical degree from the American University of Beirut Faculty of Medicine, and subsequently completed a residency in internal medicine and a fellowship in gastroenterology at Indiana University. He then completed a two-year fellowship at The Johns Hopkins Hospital before joining the faculty in 2011. A busy researcher, Dr. Khashab has published more than 600 papers in peer-reviewed journals. In 2013, he described the procedure called gastric peroral endoscopic myotomy (known as G-POEM) and was able to disseminate and teach it all over the world. Other procedures that he expanded include peroral endoscopic myotomy (POEM), peroral endoscopic myotomy with fundoplication (POEM-F), Zenker’s peroral endoscopic myotomy (Z-POEM) and full thickness resection. In 2022, he received the Master Endoscopist Award from the American Society for Gastrointestinal Endoscopy (ASGE) for his numerous contributions to the field. His procedural expertise includes endoscopic retrograde cholangiopancreatography (ERCP), endoscopic ultrasound (EUS), interventional EUS, submucosal endoscopy, POEM/achalasia, endoscopic mucosal resection, endoscopic submucosal dissection, luminal stenting, large polyp resection and Barrett’s therapy, among others. Dr. Khashab is involved with multiple gastrointestinal societies and has served on many committees, including the ASGE Standards of Practice Committee, which is in charge of formulating guidelines for the practice of endoscopy. He has also served as an associate editor for the journal Endoscopy, a premier journal in the field. Khashab is a highly sought-after speaker at national and international conferences, and he has participated in multiple live endoscopy conferences. Outside of academic medicine, Dr. Khashab is an entrepreneur. His major interest is in new technology and medical devices, and his goal is to disrupt the field by introducing technology that makes endoscopic procedures safer, easier, efficient and more scalable. Dr. Khashab is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Achalasia, Pancreatic Pseudocyst, Bile Duct Obstruction, Endoscopy, and Gastric Bypass.

Gastroenterologist Saowanee Ngamruengphong specializes in the endoscopic diagnosis and management of gastrointestinal malignancies, premalignant and malignant lesions in the gastrointestinal tract (e.g., early gastric cancer, Barrett's esophagus-associated neoplasia), esophageal cancer, colon polyps or early colorectal cancer, and pancreatic and biliary disease. Dr. Ngamruengphong earned a medical degree from Chulalongkorn University and completed residency training at the Texas Tech University Health Sciences Center. She undertook fellowship training in gastroenterology at the Mayo School of Graduate Medical Education and further fellowship training in therapeutic endoscopy at The Johns Hopkins Hospital. Her research interests include endoscopic resection and the management of precancerous or cancerous gastrointestinal lesions. Dr. Ngamruengphong is a member of several professional organizations, including the Thai Medical Council, the American College of Gastroenterology and the American Gastroenterological Association. Videos Endoscopic Submucosal Dissection (ESD) — Eileen’s Story Recent News Articles and Media Coverage A Rare, Stomach-Saving Endoscopic Procedure, Inside Tract (Spring 2021) Case Presentation: ESD-TAMIS, Inside Tract (Spring 2019) Innovative Approaches to Colorectal Surgery Benefit Patients, Surgery (Winter 2019) For Colorectal Polyps: Early Detection and Minimally Invasive Endoscopic Resection, Inside Tract (Winter, 2019) The Cutting Edge of Endoscopic Resection, Inside Tract (Spring, 2017) Stomach Cancer: Know Your Risks & Treatment Options, Johns Hopkins Surgery (4/26/2017). Dr. Ngamruengphong is rated as an Advanced provider by MediFind in the treatment of Esophagitis. Her top areas of expertise are Achalasia, Pancreatic Pseudocyst, Stomach Cancer, Endoscopy, and Gastric Bypass.

Jennifer Dantzer is a Pediatric Allergy and Immunologist in Baltimore, Maryland. Dr. Dantzer is rated as an Experienced provider by MediFind in the treatment of Esophagitis. Her top areas of expertise are Food Allergy and Esophagitis.

Ejiofor Ezekwe is a Pediatric Allergy and Immunologist in Baltimore, Maryland. Dr. Ezekwe is rated as an Experienced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Anaphylaxis, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), and Esophagitis.

Joan Dunlop is a Pediatric Allergy and Immunologist in Baltimore, Maryland. Dr. Dunlop is rated as an Experienced provider by MediFind in the treatment of Esophagitis. Her top area of expertise is Esophagitis.

Dr. Kenneth Ng is an Associate Professor of Clinical Pediatrics and the Director of Endoscopy in the Division of Pediatric Gastroenterology, Hepatology, and Nutrition at the Johns Hopkins University School of Medicine. His professional interests include therapeutic endoscopy, endoscopic innovations, pancreatic diseases, biliary diseases, and esophageal disorders. Dr. Ng received his medical degree from the Rowan University School of Osteopathic Medicine. He completed his pediatric residency at Cohen Children's Medical Center and did his fellowship in pediatric gastroenterology at Baylor College of Medicine. After fellowship, he was an Assistant Professor in the Division of Pediatric Gastroenterology, Hepatology, and Nutrition at Baylor College of Medicine, practicing at Texas Children’s Hospital in Houston, Texas. He joined Johns Hopkins Children’s Center in 2017. Dr. Ng has received awards for his research and clinical work, including the American Liver Foundation Postdoctoral Research Fellowship Award and the Dr. George Ferry Outstanding GI Faculty Award from Texas Children’s Hospital. Dr. Ng is rated as an Experienced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Childhood Pancreatitis, Chronic Pancreatitis, Hepatoblastoma, Endoscopy, and Gastrostomy.

Dr. Stephen J. Meltzer is a Professor of Medicine and Oncology at Johns Hopkins University, Division of Gastroenterology. He is the Director of GI Early Detection Biomarkers Laboratory and a member of the Johns Hopkins Kimmel Cancer Center. His research interests are Gastrointestinal cancer and precancer biomarker discover, development and validation; genomics, epigenomics and bioinformatics, early detection of cancer, outcomes research in cancer and precancer, risk stratification prediction in cancer and precancer, Barrett's esophagus, inflammatory bowel disease-associated cancer, liver cancer and gastric cancer. After receiving degree in Medicine at the State University of New York Medical School, Dr. Meltzer interned at Tulane University in New Orleans and University of Texas Medical Branch in Galveston, TX. He completed his fellowship training program in the University of Colorado and the Lenox Hill Hospital. He was an Assistant Professor in UCLA, Center for Health Science in 1987. Prior to joining the faculty at Johns Hopkins in 2006, he was Professor of Medicine and Pharmacology, Founder and Head of Aero digestive Cancer/Biomarker Program in School of Medicine, University of Maryland at Baltimore. He is an Associate Editor of Cancer Research and a member of the editorial board of Esophageal. He has published 152 original scientific papers in high-impact scientific journals. He also has 43 chapters, review articles, editorials, or letters to the editor; 1 book; and 139 abstracts to his name. He has given a plethora of invited lectures around the world, all involving his principal field of esophageal and gastrointestinal cancer research. He has been the recipient of numerous prestigious national and international awards, including the Robert and Sally D. Funderburg Award in Gastric Cancer Biology and membership in the American Society for Clinical Investigation. Special Interests: Gastrointestinal cancer and precancer biomarker discover, development and validation; genomics, epigenomics and bioinformatics, early detection of cancer, outcomes research in cancer and precancer, risk stratification prediction in cancer and precancer. Barrett's esophagus, inflammatory bowel disease-associated cancer, liver cancer, gastric cancer. Dr. Meltzer is rated as an Experienced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Barrett Esophagus, Esophageal Cancer, Stomach Cancer, Colorectal Cancer, and Endoscopy.

Dr. Bull-Henry joins Johns Hopkins as a hospitalist specializing in small bowel imaging, including single balloon enteroscopy, double balloon enteroscopy and wireless video capsule endoscopy. In addition, she has a special interest in small bowel GI bleeding, innovation in medical education and the use of artificial intelligence to attain greater diagnostic efficiencies, to improve patient outcomes and to achieve cost savings. Dr. Bull-Henry is active in her research. She has also published papers, contributed to book chapters and written abstracts on related clinical topics. Dr. Bull-Henry is active in a number of professional societies and currently serves on the Board of Governors and as Chair of the Training Committee for the American College of Gastroenterology. Videos Double Balloon EnteroscopyFAQ with Dr. Bull-Henry. Dr. Bull is rated as an Experienced provider by MediFind in the treatment of Esophagitis. Her top areas of expertise are Angiodysplasia of the Colon, Gastroparesis, Painful Swallowing, Endoscopy, and Colonoscopy.

John Affronti is a Gastroenterologist in Baltimore, Maryland. Dr. Affronti is rated as an Experienced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Childhood Volvulus, Portal Hypertension, Indigestion, Endoscopy, and Gastrectomy.

Dr. Bulat joins Johns Hopkins from Tulane University, where he was director of the neurogastroenterology and motility service and director of the GI training program. He specializes in motility and functional disorders, with an emphasis on gastroparesis. He completed his master’s degree (neuroscience) and doctorate (physiology and pharmacology) in the area of smooth muscle function, as well as motility subspecialty training, at McMaster University. Dr. Bulat is an accomplished researcher and has authored several publications and book chapters in his field of interest. Dr. Bulat is rated as an Experienced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Gastroparesis, Gastric Dysmotility, Morning Sickness, Gastrectomy, and Endoscopy.

Allen Banegura is a Gastroenterologist in Catonsville, Maryland. Dr. Banegura is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Familial Adenomatous Polyposis, Angiodysplasia of the Colon, Esophagitis, Gastrectomy, and Colonoscopy.

Dr. Onwueme graduated with Distinction from Yale University with dual BSc/MSc degrees in chemistry and received MD and PhD degrees from Weill Cornell Medical College. He completed his Internal Medicine residency at Brigham and Women’s Hospital (Clinical Fellow Harvard Medical School) and his Gastroenterology fellowship at Johns Hopkins University School of Medicine. He is currently the Director of clinical trials at Woodholme Gastroenterology and has an ardent interest in the role of microbial metabolites in gut diseases. Dr. Onwueme prizes commitment to quality and compassionate patient care to which he devotes his practice. He has expert knowledge in gut microbiology and a special interest in diarrheal diseases, disordered gut motility, autoimmune and inflammatory bowel disease. Dr. Onwueme is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Gastric Dysmotility, Diverticular Disease, Diarrhea, Endoscopy, and Gastrectomy.

Steven Epstein is a Gastroenterologist in Baltimore, Maryland. Dr. Epstein is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Familial Adenomatous Polyposis, Attenuated Familial Adenomatous Polyposis, Cronkhite-Canada Disease, Gastrectomy, and Colonoscopy.

Ernest Tsao is a Gastroenterologist in Baltimore, Maryland. Dr. Tsao is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Hepatitis, Gas Bloat Syndrome, Hepatitis C, Endoscopy, and Gastrectomy.

Eric Blum is a Gastroenterologist in Baltimore, Maryland. Dr. Blum is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Diverticular Disease, Familial Adenomatous Polyposis, Viral Gastroenteritis, Colonoscopy, and Endoscopy.

Loc Le is a Gastroenterologist in Baltimore, Maryland. Dr. Le is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Irritable Bowel Syndrome (IBS), Barrett Esophagus, Colonoscopy, and Endoscopy.

Marcia (Mimi) Canto, M.D., M.H.S. is a Professor of Medicine at The Johns Hopkins University School of Medicine. She is also the Director of Endoscopy at the Johns Hopkins Hospital. Dr. Canto received her Bachelor of Science degree from the University of the Philippines in Manila in 1981 (summa cum laude). She received her Doctor of Medicine degree in 1985 from the University of the Philippines and completed her training in Internal Medicine from State University of New York Sciences Center in Brooklyn, Brooklyn, New York. Dr. Canto completed a postdoctoral fellowship in Gastroenterology-Hepatology at The Johns Hopkins University School of Medicine and received a Master of Health Science in Clinical Epidemiology from The Johns Hopkins University School of Hygiene and Public Health in 1993. Dr. Canto came back to Johns Hopkins after spending three years at Case Western Reserve University in Cleveland, Ohio for advanced endoscopic training. Her primary clinical interests include endoscopy, particularly the use of endoscopic ultrasound (EUS) in detecting early pancreatic cancer and its precursors. She has recently shown that endoscopic ultrasound can be used to detect asymptomatic precancerous lesions in patients with a family history of pancreatic cancer. Dr. Canto is rated as a Distinguished provider by MediFind in the treatment of Esophagitis. Her top areas of expertise are Barrett Esophagus, Familial Pancreatic Cancer, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Gastrectomy.

Jonathan Schreiber is a Gastroenterologist in Baltimore, Maryland. Dr. Schreiber is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Morning Sickness, Esophagitis, Endoscopy, and Gastrostomy. Dr. Schreiber is currently accepting new patients.

Bruce Greenwald is a Gastroenterologist in Baltimore, Maryland. Dr. Greenwald is rated as an Advanced provider by MediFind in the treatment of Esophagitis. His top areas of expertise are Barrett Esophagus, Esophageal Cancer, Benign Esophageal Stricture, Endoscopy, and Colonoscopy.

Jennifer Hong is a Pediatrics provider in Baltimore, Maryland. Dr. Hong is rated as an Advanced provider by MediFind in the treatment of Esophagitis. Her top areas of expertise are Esophagitis, Delayed Growth, Diarrhea, and Gastroesophageal Reflux Disease (GERD). Dr. Hong is currently accepting new patients.