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 Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Achalasia, Pancreatic Pseudocyst, Bile Duct Obstruction, Endoscopy, and Gastric Bypass.

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

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

Lee Akst, M.D., specializes in treating the larynx (voicebox), in particular the treatment of voice and swallowing disorders. He is a leading laryngologist in office-based procedures such as vocal fold injection augmentation, pulsed KTP laser treatment, and laryngeal botox injection. In the operating room, Dr. Akst specializes in phonosurgery for the treatment of vocal cord disease, with emphasis on voice restoration and improvement. A strong focus of his practice involves the use of pulsed angiolytic lasers, which allow for subspecialized care of laryngeal papillomas, laryngeal dysplasia, and early vocal cord cancers while preserving the quality and strength of the voice. Dr. Akst is a national leader in the field of laryngology and serves in leadership roles for the American Laryngological Association, the American Broncho-Esophagological Association, and the American Academy of Otolaryngology-Head and Neck Surgery. He lectures extensively on the treatment of laryngeal disease, teaching other physicians how to care for patients with voice and swallowing concerns. His research interests include the development of robotic laryngeal surgery, the study of voice and swallowing complaints in the elderly, and the advancement of pulsed lasers for the treatment of laryngeal diseases with a focus on leukoplakia. This provider is registered with the Florida Department of Health to perform telehealth services for patients in Florida. Dr. Akst is rated as a Distinguished provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Spasmodic Dysphonia, Laryngitis, Perichondritis, Endoscopy, and Laryngectomy.

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

Mark Noar is a Gastroenterologist in Towson, Maryland. Dr. Noar is rated as a Distinguished provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Heartburn, Gastroesophageal Reflux Disease (GERD), Esophagitis, Angiodysplasia of the Colon, and Endoscopy.

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

Christina Navin is a Nurse Practitioner in Towson, Maryland. Ms. Navin is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Cleft Tongue, Infant Hearing Loss, Jones Syndrome, and DFNB1.

Andrew Goldstone is an otolaryngologist specializing in evaluation and treatment of ear, nose and throat disorders for adult and pediatric patients. He has been practicing in Baltimore since 1991. Dr. Goldstone takes great pride in providing compassionate and comprehensive ENT care for patients of all ages. Specialty care with attention to cutting-edge therapies and new approaches while ensuring excellence through use of well-established treatments is the principle upon which he practices. His goal is to develop long-term physician-patient relationships that enhance patient satisfaction and the quality and safety of care. Dr. Goldstone is also a member of several national and local medical societies, including the American Academy of Otolaryngology-Head and Neck Surgery. Dr. Goldstone is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Infant Hearing Loss, DFNB1, Jones Syndrome, and Ruptured Eardrum.

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

Dr. Marshall Bedine is an assistant professor of medicine at the Johns Hopkins University School of Medicine. His areas of clinical expertise include gastroenterology, inflammatory bowel disease and irritable bowel syndrome. He earned his M.D. from the Boston University School of Medicine. Dr. Bedine is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Crohn's Disease, Hemorrhoids, Attenuated Familial Adenomatous Polyposis, Colonoscopy, 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 the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Exocrine Pancreatic Insufficiency, Hereditary Pancreatitis, Acute Pancreatitis, Pancreatectomy, and Endoscopy.

Dr. Michael G. Goggins is a professor of pathology, medicine and oncology at the Johns Hopkins University School of Medicine. He serves as director of the Pancreatic Cancer Early Detection Laboratory and is an attending physician in medicine in the Division of Gastroenterology and Hepatology at The Johns Hopkins Hospital. He is the Sol Goldman Professor of Pancreatic Cancer Research. Dr. Goggins’ research interests include developing tests to improve the early detection in pancreas cancer, evaluating outcomes of pancreatic surveillance and identifying gene variants responsible for inherited susceptibility to pancreatic cancer. He obtained his medical degree in 1988 from Trinity College of the University of Dublin, Ireland. He completed a residency in internal medicine and a fellowship in Gastroenterology at St. James' Hospital in Dublin. He obtained his Membership of the Royal College of Physicians of Ireland in 1991 and his European Diploma in Gastroenterology in 1995. He joined the Johns Hopkins faculty in 1999. Dr. Goggins is a member of the Royal College of Physicians of Ireland. He sits on the editorial boards of Gut. Dr. Goggins is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Familial Pancreatic Cancer, Pancreatic Cancer, Pancreatic Ductal Adenocarcinoma, Pancreatectomy, and Pancreaticoduodenectomy.

Dr. Rameen J. Molavi is part-time on the medical faculty as an instructor in medicine in the division of General Internal Medicine within the Department of Medicine at the Johns Hopkins University School of Medicine. His area of clinical expertise is internal medicine. Dr. Molavi is also the managing physician and chair of Park Medical Associates, a member of Johns Hopkins Regional Physicians. He is the recipient of the 2025 Samuel P. Asper Award for excellence in medicine from the Maryland Chapter of the American College of Physicians. Dr. Molavi holds a B.A. in biology from Rice University in Houston, TX. He earned his M.D. at the Johns Hopkins University School of Medicine. He completed his internship and residency in categorical internal medicine at the Washington University School of Medicine Barnes-Jewish Hospital in St. Louis, MO. He began medical practice in Lutherville in 1999 and joined Park Medical Associates in 2009. His practice focus is on primary care for adults of all ages. Recent News Articles and Media Coverage Dr. Rameen Molavi: COVID-19 Testing Realities, WYPR (April 28, 2020) Samuel Asper Award, American College of Physicians (2025). Dr. Molavi is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Mesenteric Venous Thrombosis, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Hypertension.

Dr. Andrew Lane is the Director of the Johns Hopkins Sinus Center and performs the full range of endoscopic sinus procedures, including transnasal skull base and orbital surgeries. He is dedicated to providing cutting-edge care to his patients and developing new therapies for chronic rhinosinusitis through his clinical and basic science research. He is the longest practicing sinus specialist with advanced fellowship training in the Baltimore/Washington region, with two decades of experience in the medical and surgical management of challenging sinus disease. Dr. Lane received a bachelor's degree from Harvard University and an M.D. from the University of Pennsylvania School of Medicine. He completed his internship in general surgery and residency in Otolaryngology-Head and Neck Surgery at the University of North Carolina at Chapel Hill. He came to Johns Hopkins in 2001, after completing a fellowship in advanced endoscopic sinus surgery techniques at the University of Pennsylvania. Dr. Lane maintains a busy clinical practice while also running an NIH-funded laboratory. His research investigates the causes and potential treatments for chronic rhinosinusitis with nasal polyps, as well as how inflammation affects the sense of smell. An author of over 140 published articles and book chapters, he frequently presents his surgical and research results at national and international meetings. He has earned several prestigious awards for his research about nasal polyps and olfactory loss. Dr. Lane is Editor-in-Chief of Current Otorhinolaryngology Reports, Associate Editor of the American Journal of Rhinology and Allergy, and an Editorial Board member of the International Forum of Allergy & Rhinology. He has served on the Board of Directors of the American Rhinologic Society and chaired the Rhinology and Paranasal Sinus Committee of the American Academy of Otolaryngology – Head and Neck Surgery. He is the Rhinology section leader for the Triological Society’s Best Practice committee. Dr. Lane is often invited to speak at outside medical institutions and regularly conducts media interviews about nasal and sinus issues. Dr. Lane is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), Nasal Polyps, Sinusitis, Endoscopy, and Septoplasty.

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 the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Obesity, Malnutrition, Gastroesophageal Reflux Disease (GERD), Liver Embolization, 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 the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Obesity, Obesity in Children, Hernia, Gastrectomy, and Sleeve Gastrectomy.

Mohammad Rahnama is a primary care provider, practicing in Internal Medicine in Parkville, Maryland. Dr. Rahnama is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are High Cholesterol, Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis.

David Cromwell is a Gastroenterologist in Towson, Maryland. Dr. Cromwell is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Gastrointestinal Bleeding, Familial Adenomatous Polyposis, Swallowing Difficulty, Endoscopy, and Colonoscopy.

Francesco Grasso is a Colorectal Surgeon in Towson, Maryland. Dr. Grasso is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Anal Cancer, Mesenteric Venous Thrombosis, Genital Warts, Bladder Reconstruction, and Ureteroscopy.