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.

Raymond Kim is a Gastroenterologist in Baltimore, Maryland. Dr. Kim is rated as an Elite provider by MediFind in the treatment of Achalasia. His top areas of expertise are Achalasia, Bile Duct Obstruction, Bile Duct Stricture, Endoscopy, and Gastrectomy.

Vikesh Singh is a gastroenterologist who specializes in pancreatology and pancreaticobiliary endoscopy. He evaluates and treats patients with inflammatory diseases of the pancreas, including acute and chronic pancreatitis and autoimmune pancreatitis as well as the complications of these diseases. After earning his medical degree from the Johns Hopkins University School of Medicine, Dr. Singh remained at Johns Hopkins to complete residency training in internal medicine. He pursued fellowship training in gastroenterology at Brigham and Women’s Hospital, and earned a master’s degree in epidemiology from the Harvard T. H. Chan School of Public Health. He then returned to Johns Hopkins, where he completed a two-year advanced endoscopy fellowship with a focus on pancreaticobiliary endoscopy. Dr. Singh has been on the faculty at Johns Hopkins since 2008, and rose to the rank of professor in 2021. His research interests include acute and chronic pancreatitis, autoimmune pancreatitis, exocrine pancreatic insufficiency, and novel methods to evaluate and treat abdominal pain. Dr. Singh is a member of the board of directors of the National Pancreas Foundation, chair of the Pancreatic Disorders Section of the American Gastroenterological Association, a councilor for the International Association of Pancreatology and a member of the inaugural medical advisory board for the Familial Chylomicronemia Syndrome Foundation. Dr. Singh is rated as an Advanced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Exocrine Pancreatic Insufficiency, Hereditary Pancreatitis, Acute Pancreatitis, Pancreatectomy, and Endoscopy.

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.

Richard Battafarano, M.D., Ph.D., joins the Johns Hopkins Department of Surgery as director of the Division of General Thoracic Surgery and the first regional director of general thoracic surgery. He comes to Johns Hopkins from University of Maryland Medical System, where he was chief of the Division of Thoracic Surgery. Dr. Battafarano specializes in the treatment of benign and malignant diseases and lesions of the chest, including minimally invasive operations such as video-assisted thoracscopic surgery (VATS) for lung and esophageal cancers. He also has a special interest in treating Barretts esophagus, emphysema, mesothelioma and paraesophageal hernias. The focus of Dr. Battafaranos basic and translational research includes outcomes in the surgical management of early stage lung cancer patients with neuroendocrine histology, optimal management of lung cancer patients with mediastinal lymph node metastases, and the effect of survivin overexpression in the development of esophageal cancer. Dr. Battafarano sees patients at The Johns Hopkins Hospital and the Johns Hopkins Health Care & Surgery Centers at Green Spring Station and at White Marsh. Dr. Battafarano is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Lung Cancer, Thymic Epithelial Tumor, Pleuropulmonary Blastoma, Gastrectomy, and Endoscopy.

Dr. Veloso joins Johns Hopkins from University Hospitals Case Medical Center, where she was the director of outpatient clinics at the University Hospitals Digestive Health Institute, Westlake. She has special interests in Celiac disease, Colon Cancer, Microscopic Colitis and Inflammatory Bowel Disease. Dr. Veloso received several commendations in her teaching role at the University Hospitals Case Medical Center, the primary affiliate of Case Western Reserve University, and was an active participant in the Filipino American community where she was a member of the board of trustees for the American Philippine Physicians of Ohio. Dr. Veloso is rated as an Experienced provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Gas Bloat Syndrome, Chronic Idiopathic Constipation (CIC), Diarrhea, Colonoscopy, and Endoscopy.

Zilla Hussain is a Gastroenterologist in Towson, Maryland. Dr. Hussain is rated as an Advanced provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Gastroesophageal Reflux Disease (GERD), Diarrhea, Esophagitis, Endoscopy, and Colonoscopy.

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.

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.

Ray Blanco is a Surgical Oncologist and a General Surgeon in Baltimore, Maryland. Dr. Blanco is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Renal Oncocytoma, Aseptic and Alopecic Nodules of Scalp (AANS), Thyroid Nodule, Gastrostomy, and Thyroidectomy. Dr. Blanco is currently accepting new patients.

Niraj Jani is a Gastroenterologist in Towson, Maryland. Dr. Jani is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Acute Pancreatitis, Choledocholithiasis, Endoscopy, and Colonoscopy.

Amin Khan is a Gastroenterologist in Towson, Maryland. Dr. Khan is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Diarrhea, Trichohepatoenteric Syndrome, Familial Adenomatous Polyposis, Gastrectomy, and Endoscopy.

Joshua Forman is a Gastroenterologist in Towson, Maryland. Dr. Forman is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Choledocholithiasis, Gallstones, Bile Duct Obstruction, Endoscopy, and Gastrectomy.

Andrew Rosenstein is a Gastroenterologist in Towson, Maryland. Dr. Rosenstein is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Crohn's Disease, Lower Esophageal Ring, Endoscopy, and Gastrectomy.

Jamie Walters is an Internal Medicine provider in Towson, Maryland. Dr. Walters is rated as an Experienced provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Irritable Bowel Syndrome (IBS), Gastroesophageal Reflux Disease (GERD), Chronic Erosive Gastritis, Gastrectomy, and Endoscopy.

Patrick Hyatt is a Gastroenterologist in Lutherville Timonium, Maryland. Dr. Hyatt is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Barrett Esophagus, Gastroesophageal Reflux Disease (GERD), Esophagitis, and Chronic Erosive Gastritis.