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 Elite provider by MediFind in the treatment of Achalasia. 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 Elite provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Achalasia, Pancreatic Pseudocyst, Stomach Cancer, Endoscopy, and Gastric Bypass.

Anthony Kalloo is a professor of medicine with special interests in natural orifice translumenal endoscopic surgery, therapeutic endoscopy and sphincter of Oddi dysfunction. After receiving his medical degree at the University of the West Indies Medical School, Dr. Kalloo interned at Port of Spain General Hospital in Trinidad and performed his internal medicine residency at Howard University Hospital in Washington, D.C., where he was also chief resident. He completed fellowship training at the combined Georgetown University, Veterans Affairs Medical Center and National Institutes of Health program. Dr. Kalloo was an instructor of medicine at Georgetown University prior to joining the Johns Hopkins faculty in 1988. He was director of the Johns Hopkins Division of Gastroenterology and Hepatology from 2005–2020, and was an associate editor of Gastrointestinal Endoscopy. In 2009, Dr. Kalloo was recognized by the American Society for Gastrointestinal Endoscopy as the Distinguished Educator of the Year. In 2014, he received the Endoscopy Award from the German Society for Endoscopy for outstanding research and contribution in the field of endoscopy. In 2015, he received the BJ Vakil Oration from the Society of Gastrointestinal Endoscopy of India, which is bestowed on an international expert for his contribution to the field of gastrointestinal endoscopy. He has authored over 200 peer-reviewed publications and has more than 100 patents, including the use of botulinum toxin in the gastrointestinal tract, endoscopic cryotherapy and the winged biliary/pancreatic stent, as well as others related to natural orifice surgery. He is the pioneer of natural orifice translumenal endoscopic surgery, a technique that will enable abdominal surgery without the use of incisions. In 2015, he became a member of the inaugural chapter of the National Academy of Inventors at The Johns Hopkins University. This group represents the top 3% of all faculty inventors since 1969, and the top 1.5% of active Johns Hopkins faculty. Dr. Kalloo is a past panel chair for gastroenterology and urology devices with the United States Food and Drug Administration. He aims to advance the understanding, diagnosis, treatment and prevention of gastrointestinal and liver disease through patient care, education and research. Dr. Kalloo is rated as a Distinguished provider by MediFind in the treatment of Achalasia. His top areas of expertise are Hereditary Pancreatitis, Acute Pancreatitis, Achalasia, Endoscopy, and Gastrectomy.

Dr. Stephen C. Yang is a professor of surgery and medical oncology at Johns Hopkins University School of Medicine and The Johns Hopkins Hospital. In October 2008 he was named the first recipient of The Arthur B. and Patricia B. Modell Professor in Thoracic Surgery. Dr. Yang is an extreme supporter of medical students, being the only surgeon (amongst 20 chosen from the School of Medicine) for the medical student advisory Colleges system, and is the faculty sponsor for the Surgery Interest Group and the Asian Pacific American Medical Student Association. Dr. Yang graduated from Duke University with a B.A. in Chemistry and received his M.D. degree from the Medical College of Virginia. He completed his general surgery residency at the University of Texas Health Science Center at Houston, and finished his cardiothoracic surgery fellowship at the Medical College of Virginia. He also completed a 3 year thoracic surgical oncology research fellowship at the University of Texas M. D. Anderson Cancer Center. He currently serves on the Postgraduate Affairs, Medical School Admissions, Educational Policy, and Curriculum Reform Committees in the Johns Hopkins School of Medicine. He served on numerous national and international committees for these organizations, and is the Taskforce Chair on the Looking to the Future Residency Scholarships for the Society of Thoracic Surgeons He is Editor of Practical Reviews in Chest Medicine and guest editor/ reviewer for numerous peer review journals. He is co-editor of the book Current Therapy in Thoracic and Cardiovascular Surgery, edited the esophageal surgical section in the 2nd edition of Atlas of Gastrointestinal Surgery with John Cameron, M.D., and series editor-in-chief of The Early Diagnosis of Cancer also editing the book volume of The Early Diagnosis of Lung Cancer. In 2001, he and his lung transplant team were featured in the ABC series 24/7 and is currently also being followed in the sequel to that series focusing in on resident and medical student teaching. This series as well as other experiences are still shown on the Discovery Channel. The extensive work in preparing an esophageal cancer patient for surgery on the BBC and the Discovery Channel. Dr. Yang's laboratory research interests include using molecular techniques for lung cancer screening and for molecular staging of micrometastasis to predict recurrence following surgical resection. His clinical practice and research covers the breath of general thoracic surgery in pulmonary and esophageal surgery, video-assisted and robotics thoracic surgery, mediastinal and pleural work, lung volume reduction surgery for emphysema, and work in geriatric thoracic surgery. Dr. Yang is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Lung Cancer, Non-Small Cell Lung Cancer (NSCLC), Pleuropulmonary Blastoma, Endoscopy, and Thymectomy.

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 Achalasia. His top areas of expertise are Childhood Pancreatitis, Chronic Pancreatitis, Hepatoblastoma, Endoscopy, and Gastrostomy.

Dr. Nimgaonkar is gastroenterologist and a medical technology researcher at Johns Hopkins University. He is an assistant professor of medicine, a medical director at the Center for Bioengineering Innovation and Design in the JHU Biomedical Engineering department and an adjunct faculty at the JHU Carey Business School. He leads numerous translational technology research projects at Johns Hopkins in the areas of gastrointestinal and metabolic diseases. His particular interest is to investigate the physiology behind various interventions to treat metabolic diseases such as diabetes and obesity and apply various engineering tools to develop novel therapies for these diseases. He has been inventor on many technologies and a recipient of numerous awards including the AGA-Boston Scientific career development technology & innovation award and the CIMIT-Johnson & Johnson Young Clinician award. His work has been supported by grants from both foundational ​and federal (NIH, NSF) agencies. Recent News Articles and Media Coverage AGA - Boston Scientific Career Development Technology & Innovation Award, News Medical (December 5, 2014) Update on AGA - Boston Scientific Career Development Technology & Innovation Award, GI & Hepatology News (April 6, 2015) Pumped, Inside Tract (Winter 2016) Advanced POC Testing Devices Open New Avenues for Diagnostics, GEN Exclusives (November 22, 2016) A Multi-Biomarker Blood Test Clinically-Proven for Early Detection of Col0rectal Cancer PRWeb (May 2, 2017) Genetic Cancer Risk Test for 98 Geners, 24 Hereditary Cancers Bypassing Bypass Surgery, Inside Tract (Spring 2017) Despite Theranos, Real, Capital-Efficient Innovation Exists For Blood Tests, Life Science Leader (June 28, 2018) A Pill to Treat Diabetes, Scientific American (November 21, 2017) GI leader to know: Dr. Ashish Nimgaonkar of Johns Hopkins Medicine, Becker's Healthcare (August 31, 2018) Physician innovator working to bring new tech to patients, thanks to AGA funding, American Gastroenterological Association (April 9, 2019) AGA's featured researcher Dr. Ashish Nimgaonkar, Becker's Healthcare (April 17, 2019) Lab Website Ashish Nimgoankar Lab The Ashish Nimgoankar Lab is interested in translational technology development and image-guided therapies. Dr. Nimgaonkar is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Obesity, Achalasia, Gastrointestinal Bleeding, Endoscopy, and Gastric Bypass.

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 Achalasia. Her top areas of expertise are Angiodysplasia of the Colon, Gastroparesis, Painful Swallowing, Endoscopy, and Colonoscopy.

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 Achalasia. His top areas of expertise are Gastroparesis, Gastric Dysmotility, Morning Sickness, Gastrectomy, and Endoscopy.

Jinny Ha is a Thoracic Surgeon in Baltimore, Maryland. Dr. Ha is rated as an Experienced provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Lung Nodules, Esophageal Cancer, Fibrosing Mediastinitis, Lung Transplant, and Osteotomy.

Bryan Curtin is a Gastroenterologist in Baltimore, Maryland. Dr. Curtin is rated as an Advanced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Chronic Idiopathic Constipation (CIC), Gas Bloat Syndrome, Gastroparesis, Endoscopy, and Gastrectomy. Dr. Curtin is currently accepting new patients.

Sergey Kantsevoy is a Gastroenterologist in Baltimore, Maryland. Dr. Kantsevoy is rated as an Advanced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Familial Adenomatous Polyposis, Turcot Syndrome, Gardner Syndrome, Endoscopy, and Colonoscopy. Dr. Kantsevoy is currently accepting new patients.

Guofeng Xie is a Gastroenterologist in Baltimore, Maryland. Dr. Xie is rated as an Advanced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Achalasia, Colorectal Cancer, Swallowing Difficulty, Endoscopy, and Gastrostomy. Dr. Xie 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 Achalasia. His top areas of expertise are Barrett Esophagus, Esophageal Cancer, Benign Esophageal Stricture, Endoscopy, and Colonoscopy.

Michael Marohn is a General Surgeon in Baltimore, Maryland. Dr. Marohn is rated as an Advanced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Hiatal Hernia, Hernia, Achalasia, Hernia Surgery, and Endoscopy.

Allen Banegura is a Gastroenterologist in Catonsville, Maryland. Dr. Banegura is rated as an Experienced provider by MediFind in the treatment of Achalasia. 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 Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Gastric Dysmotility, Diverticular Disease, Diarrhea, Endoscopy, and Gastrectomy.

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

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

Agazi Gebreselassie is a Gastroenterologist and a Hospital Medicine provider in Baltimore, Maryland. Dr. Gebreselassie is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Jaundice, Macroamylasemia, Portal Hypertension, Endoscopy, and Colonoscopy.

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