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 Gastrectomy. His top areas of expertise are Achalasia, Pancreatic Pseudocyst, Bile Duct Obstruction, Endoscopy, and Gastric Bypass.

Anita Sivaraman is a Gastroenterologist in Baltimore, Maryland. Dr. Sivaraman is rated as an Experienced provider by MediFind in Gastrectomy. Her top areas of expertise are Gastrointestinal Bleeding, Colitis, Viral Gastroenteritis, Colonoscopy, and Endoscopy. Dr. Sivaraman is currently accepting new patients.

Debashish Bose is a Surgical Oncologist and a General Surgeon in Baltimore, Maryland. Dr. Bose is rated as an Experienced provider by MediFind in Gastrectomy. His top areas of expertise are Pancreatic Pseudocyst, Pancreatic Cancer, Familial Pancreatic Cancer, Pancreatectomy, and Small Bowel Resection. Dr. Bose is currently accepting new patients.

Sudhir Dutta is a Gastroenterologist in Lutherville, Maryland. Dr. Dutta is rated as an Advanced provider by MediFind in Gastrectomy. His top areas of expertise are Gastrointestinal Bleeding, Choledocholithiasis, Hiatal Hernia, Colonoscopy, and Gastrectomy.

David Hutcheon is a Gastroenterologist in Lutherville, Maryland. Dr. Hutcheon is rated as an Advanced provider by MediFind in Gastrectomy. His top areas of expertise are Gastrointestinal Bleeding, Intestinal Cancer, Angiodysplasia of the Colon, Colonoscopy, and Endoscopy.

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

Timothee Friesen is a General Surgeon in Baltimore, Maryland. Dr. Friesen is rated as an Advanced provider by MediFind in Gastrectomy. His top areas of expertise are Obesity, Obesity in Children, Food Allergy, Sleeve Gastrectomy, and Gastrectomy. Dr. Friesen is currently accepting new patients.

Shauna Costinett is a General Surgeon in Baltimore, Maryland. Dr. Costinett is rated as an Advanced provider by MediFind in Gastrectomy. Her top areas of expertise are Obesity, Hernia, Ogilvie Syndrome, Sleeve Gastrectomy, and Gastrectomy. Dr. Costinett is currently accepting new patients.

Mark Kligman is a Bariatric Medicine provider in Baltimore, Maryland. Dr. Kligman is rated as a Distinguished provider by MediFind in Gastrectomy. His top areas of expertise are Obesity, Obesity in Children, Short Bowel Syndrome, Sleeve Gastrectomy, and Gastrectomy.

Matilda Hagan is a Gastroenterologist in Lutherville, Maryland. Dr. Hagan is rated as an Experienced provider by MediFind in Gastrectomy. Her top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Crohn's Disease, Colonoscopy, and Endoscopy. Dr. Hagan is currently accepting new patients.

Paul Thuluvath is a Gastroenterologist in Lutherville, Maryland. Dr. Thuluvath is rated as an Experienced provider by MediFind in Gastrectomy. His top areas of expertise are Liver Failure, Hepatitis, Hepatitis C, Liver Transplant, and Endoscopy.

David Cromwell is a Gastroenterologist in Towson, Maryland. Dr. Cromwell is rated as an Experienced provider by MediFind in Gastrectomy. His top areas of expertise are Gastrointestinal Bleeding, Familial Adenomatous Polyposis, Swallowing Difficulty, Endoscopy, and Colonoscopy.

Dr. Elham Afghani is an assistant professor of Medicine at the Johns Hopkins University School of Medicine. She joins us from Cedars Sinai Medical Center in Los Angeles. She received her medical degree from University of California, Irvine. She completed her internal medicine residency as well as an extra year as chief resident at the University of California, Irvine, Medical Center. She then completed her gastroenterology and hepatology fellowship with additional training in pancreatic diseases at the Johns Hopkins University School of Medicine. With a unique specialization in pancreatic disease, she has participated in numerous research projects at the Cedars Sinai division of pancreatico-biliary diseases and was involved in a U01 Consortium for the study of chronic pancreatitis, diabetes and pancreatic cancer. Dr. Afghani’s areas of expertise include acute and chronic pancreatitis, pancreatic cysts and pancreatic exocrine insufficiency. She is an accomplished researcher with multiple publications in prestigious peer-reviewed journals as well as presentations at national meetings. Dr. Afghani is rated as an Experienced provider by MediFind in Gastrectomy. Her top areas of expertise are Hereditary Pancreatitis, Acute Pancreatitis, Chronic Pancreatitis, Endoscopy, and Lithotripsy.

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 Gastrectomy. His top areas of expertise are Lung Cancer, Thymic Epithelial Tumor, Pleuropulmonary Blastoma, Gastrectomy, and Endoscopy.

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 Experienced provider by MediFind in Gastrectomy. His top areas of expertise are Exocrine Pancreatic Insufficiency, Hereditary Pancreatitis, Acute Pancreatitis, Pancreatectomy, and Endoscopy.

"Michael Schweitzer, M.D., developed the laparoscopic bariatric surgery programs at the Medical College of Virginia (one of the first ten laparoscopic gastric bypass programs in the country), Georgetown University, Sinai Hospital of Baltimore and the Johns Hopkins University. Dr. Schweitzer was the first surgeon in the mid-Atlantic area to perform laparoscopic Roux-en-Y gastric bypass and the first in Maryland to perform laparoscopic adjustable gastric band surgery and laparoscopic duodenal switch with biliopancreatic diversion. Currently chair of the membership committee for the American Society of Bariatric Surgeons, Dr. Schweitzer also serves as a site inspector for the American College of Surgeons Bariatric Center of Excellence Program. He serves on three editorial boards: the Journal of Laparoendoscopic and Advanced Surgical Techniques, Surgery for Obesity and Related Diseases the official journal of the American Society of Bariatric Surgeons) and Bariatric Times. Dr. Schweitzer was the first to ever publish a technique for endoscopic stoma reduction using transoral endoscopic suturing. A great deal of attention is focused on the future of transoral surgery to avoid abdominal incisions for routine surgery (""No-Scar Surgery""). Dr. Schweitzer is one of the first to apply this technology to bariatric patients. A writer of numerous papers, chapters and review articles on bariatric surgery, several of Dr. Schweitzer''s laparoscopic bariatric surgical techniques have been featured in the American College of Surgeons Cine Video Series. He is considered an international expert on venous thromboembolic complications after bariatric surgery and has one of the lowest complication rates documented in world surgical literature. Dr. Schweitzer currently has an extremely active laparoscopic bariatric practice that includes laparoscopic Roux-en-Y gastric bypass, laparoscopic adjustable gastric band, laparoscopic sleeve gastrectomy, laparoscopic duodenal switch with biliopancreatic diversion, and revision of previous surgery. The team at the Johns Hopkins Center for Bariatric Surgery has successfully completed over 2500 bariatric procedures.". Dr. Schweitzer is rated as an Experienced provider by MediFind in Gastrectomy. His top areas of expertise are Obesity, Obesity in Children, Hernia, Gastrectomy, and Sleeve Gastrectomy.

Malcolm V. Brock, M.D., a graduate of the Johns Hopkins University School of Medicine, the Johns Hopkins general surgical residency program and the Johns Hopkins fellowship in cardiothoracic surgery, is a specialist in thoracic oncology, and is a Professor of Surgery and Oncology at the Johns Hopkins University School of Medicine. In additional to clinical thoracic oncology, his clinical interests include surgery for palmar, axillary and pedal hyperhidrosis. Dr. Brock is a surgeon who conducts cancer research at the Johns Hopkins Kimmel Cancer Center, specializing in applying innovative basic science research to patient care. His main research interests are in developing novel molecular biomarkers for solid tumors that can help clinicians diagnose cancer earlier and treat it more effectively. He has studied using DNA-based methods to predict which patients will develop recurrent lung cancer, even after successful surgery, and to predict patients with esophageal cancer who will be sensitive to certain chemotherapy. Dr. Brock has published over 70 original research papers, book chapters and review articles, and has presented often at national and international conferences. He has been the recipient of research funding from the National Institutes of Health (NIH), the Thoracic Surgery Foundation for Research Excellence, the American College of Surgery Oncology Group and the Society of Surgical Oncology. Dr. Brock is rated as an Experienced provider by MediFind in Gastrectomy. His top areas of expertise are Lung Cancer, Esophageal Cancer, Non-Small Cell Lung Cancer (NSCLC), Tissue Biopsy, and Endoscopy.

Lawrence J. Cheskin, MD, FACP, FTOS, is now an adjunct professor of gastroenterology and general internal medicine at the Johns Hopkins School of Medicine. Since 2019, he has also been a professor (and chair from 2019 to 2024) of Nutrition and Food Studies in the College of Public Health at George Mason University in Fairfax, VA. In his research, Dr. Cheskin studies the effectiveness of various lifestyle and dietary changes in weight loss and weight maintenance. He has experience in the design and implementation of controlled clinical trials and laboratory studies of different dietary techniques, as well as individual and community-based interventions, including those targeting underserved residents of inner-city and suburban Baltimore. His background and experience are broad, ranging from basic science work on dopamine genetics to efforts aimed at preventing childhood obesity through systems-focused studies of the effects of policies and the built environment. Most recently, he has been studying health risk factors among young adult college students and the utility of mHealth in positively influencing diet and weight control. He has written approximately 250 peer-reviewed publications and 9 books and is frequently cited in the media on issues related to obesity, nutrition, and dieting. Dr. Cheskin is rated as an Experienced provider by MediFind in Gastrectomy. His top areas of expertise are Obesity, Malnutrition, Gastroesophageal Reflux Disease (GERD), Liver Embolization, 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 Gastrectomy. Her top areas of expertise are Gas Bloat Syndrome, Chronic Idiopathic Constipation (CIC), Diarrhea, Colonoscopy, and Endoscopy.

Neil Goldberg is a Gastroenterologist in Baltimore, Maryland. Dr. Goldberg is rated as an Experienced provider by MediFind in Gastrectomy. His top areas of expertise are Crohn's Disease, Bile Acid Malabsorption, Diarrhea, Endoscopy, and Gastrectomy.