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.

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 an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Hereditary Pancreatitis, Acute Pancreatitis, Achalasia, Endoscopy, and Gastrectomy.

Jahangir Khan is a Gastroenterologist in Rosedale, Maryland. Dr. Khan 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), Barrett Esophagus, Gastric Dysmotility, and Juvenile Polyposis Syndrome.

Dr. Mullin is an associate professor of medicine at The Johns Hopkins University School of Medicine. Dr. Mullin has more than 30 years of clinical experience in the field of general gastroenterology. Dr. Mullin is a reviewer and also serves on the editorial board of numerous gastroenterology journals. Videos Hopkins at Home presents, A Woman's Journey: Is It Celiac Disease?. Dr. Mullin is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Small Bowel Bacterial Overgrowth, Irritable Bowel Syndrome (IBS), Diarrhea, Endoscopy, and Colonoscopy.

Joseph Lin is a Gastroenterologist in Rosedale, Maryland. Dr. Lin is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Attenuated Familial Adenomatous Polyposis, Juvenile Polyposis Syndrome, Cronkhite-Canada Disease, and Lactose Intolerance.

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.

Dr. Brent B. MacDonald is an instructor of medicine at the Johns Hopkins University School of Medicine. His area of clinical expertise is primary care. He earned his M.D. at George Washington University School of Medicine and completed his residency at Baylor College of Medicine. Dr. MacDonald is a member of Johns Hopkins Community Physicians. Dr. Macdonald is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

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 Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Achalasia, Pancreatic Pseudocyst, Stomach Cancer, Endoscopy, and Gastric Bypass.

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.

Carl Schluederberg is a primary care provider, practicing in Family Medicine in Baltimore, Maryland. Dr. Schluederberg is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Vitamin D Deficiency, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Hypertension. Dr. Schluederberg is currently accepting new patients.

Samer Charbel is a Gastroenterologist in Baltimore, Maryland. Dr. Charbel is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Watermelon Stomach, Angiodysplasia of the Colon, Gastroesophageal Reflux Disease (GERD), Gastrectomy, and Colonoscopy.

Iris Lee is a Gastroenterologist in Baltimore, Maryland. Dr. Lee is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Bile Duct Obstruction, Familial Pancreatic Cancer, Childhood Volvulus, Endoscopy, and Colonoscopy.

Abhinav Sankineni is a Gastroenterologist in Baltimore, Maryland. Dr. Sankineni is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Bile Duct Obstruction, Gastroesophageal Reflux Disease (GERD), Childhood Pancreatitis, Endoscopy, and Gastrostomy.

Bradford Ebright is a primary care provider, practicing in Family Medicine in Baltimore, Maryland. Dr. Ebright 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 Hypertension, Hypertension, and Glucocorticoid-Remediable Aldosteronism. Dr. Ebright is currently accepting new patients.

Scott Huber is a Gastroenterologist in Baltimore, Maryland. Dr. Huber is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Gardner Syndrome, and Diarrhea. Dr. Huber is currently accepting new patients.

Naresh Khanna is a General Surgeon in Baltimore, Maryland. Dr. Khanna is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Obesity, Obesity in Children, and Chronic Erosive Gastritis. Dr. Khanna is currently accepting new patients.

Alexandra Lazzara is an assistant professor of pediatrics with the Johns Hopkins School of Medicine. Dr. Lazzara’s research is focused on communication with families and decision making for infants with chronic critical illness. She is currently piloting a web-based decision aid for families making resuscitation decisions at the limits of viability and plans to expand this framework to other disease processes commonly seen in the NICU. Dr. Lazzara is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Intraventricular Hemorrhage of the Newborn and Gastroesophageal Reflux Disease (GERD).

Dr. Wolfe's practice includes all aspects of primary care, with an emphasis on women's health. She attended Medical School at Case Western Reserve University School of Medicine in Cleveland, Ohio. She completed a primary care residency at Johns Hopkins Bayview Medical Center. Videos 2016 Excellence in Service and Professionalism Award - Leah Wolfe, M.D., Johns Hopkins Bayview Medical Center. Dr. Wolfe is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Autoimmune Hepatitis, Hepatitis, Familial Hypertension, and Glucocorticoid-Remediable Aldosteronism.

Brenda Zosa, M.D., is a fellowship-trained minimally invasive surgeon in the Johns Hopkins Department of Surgery. She has advanced training in foregut surgery, bariatric surgery, advanced endoscopy, and abdominal wall reconstruction surgery. Dr. Zosa joins Johns Hopkins after completing her fellowship at the University of Wisconsin in Madison, WI. She sees patients experiencing a range of gastroenterology conditions, and can provide patients advanced therapeutic endoscopy treatments including per oral endoscopic myotomy (POEM) and per oral pyloromyotomy (POP). Dr. Zosa sees patients at the Johns Hopkins Outpatient Center and Johns Hopkins Bayview Medical Center in Baltimore, and the Johns Hopkins Health Care & Surgery Center – Green Spring Station in Lutherville. Dr. Zosa is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Hernia, Hiatal Hernia, Congenital Diaphragmatic Hernia, and Gastroparesis.

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 Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Gastroparesis, Gastric Dysmotility, Morning Sickness, Gastrectomy, and Endoscopy.