The 20 Best Colonoscopy Doctors in Maryland, US

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 a Distinguished provider by MediFind in Colonoscopy. His top areas of expertise are Achalasia, Pancreatic Pseudocyst, Bile Duct Obstruction, Endoscopy, and Gastric Bypass.

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

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 Colonoscopy. Her top areas of expertise are Achalasia, Pancreatic Pseudocyst, Stomach Cancer, Endoscopy, and Gastric Bypass.

Dr. Lazarev joined Johns Hopkins from the Mount Sinai Medical Center in New York, where he completed the Present-Levison advanced inflammatory bowel disease fellowship. A specialist in the diagnosis and management of Crohn's disease and ulcerative colitis, Dr. Lazarev has published numerous peer-reviewed articles, abstracts and chapters. Dr. Lazarev is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Crohn's Disease, Viral Gastroenteritis, Ulcerative Colitis, Colonoscopy, 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 an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Hereditary Pancreatitis, Acute Pancreatitis, Achalasia, Endoscopy, and Gastrectomy.

An expert in foodborne and intestinal infections, Cynthia Sears is a professor of medicine and oncology at the Johns Hopkins University School of Medicine as well as a professor of molecular microbiology and immunology at the Bloomberg School of Public Health. She is the microbiome program leader of the Bloomberg~Kimmel Institute for Cancer Immunotherapy at Johns Hopkins and is director of the Johns Hopkins Germ-free Murine Facility. She is an infectious diseases expert who has focused on gut infections including diarrhea, foodborne illnesses Clostridium difficile (C. diff) and Helicobacter pylori during her career. In the laboratory and in clinical settings, she has studied the pathogenesis of enterotoxigenic Bacteroides fragilis (ETBF) over the past 25 years. The current focus of the Sears laboratory is to determine how the microbiota and specific bacteria contribute to colon carcinogenesis. The Sears laboratory integrates studies in humans and mouse models, employing microbiology, bioinformatics and immunologic methods. Dr. Sears has worked abroad in Thailand, Brazil, Haiti, Bangladesh and Malaysia. Dr. Sears served as associate editor of Clinical Infectious Diseases from 2000 to 2016. She has been an active member of the Infectious Diseases Society of America (IDSA) for more than 20 years, serving the society in numerous capacities, and is currently president of the organization. Dr. Sears received her medical degree from Thomas Jefferson Medical College followed by training in internal medicine at The New York Hospital (Cornell Medical School) in New York City. She trained in infectious diseases at the Memorial Sloan Kettering Cancer Institute and the University of Virginia. Dr. Sears joined the faculty at the Johns Hopkins University School of Medicine in 1988. Dr. Sears is rated as an Advanced provider by MediFind in Colonoscopy. Her top areas of expertise are Viral Gastroenteritis, Periodontitis, HIV/AIDS, Colonoscopy, and Endoscopy.

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

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 Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Small Bowel Bacterial Overgrowth, Diarrhea, Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy.

Naveen Gupta is a Gastroenterologist in Bethesda, Maryland. Dr. Gupta is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Gastrointestinal Bleeding, Gallstones, Choledocholithiasis, Endoscopy, and Gastrectomy.

Eric Blum is a Gastroenterologist in Baltimore, Maryland. Dr. Blum is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Diverticular Disease, Familial Adenomatous Polyposis, Viral Gastroenteritis, Colonoscopy, 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 Advanced provider by MediFind in Colonoscopy. Her top areas of expertise are Gas Bloat Syndrome, Chronic Idiopathic Constipation (CIC), Diarrhea, Colonoscopy, and Endoscopy.

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 Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Crohn's Disease, Hemorrhoids, Cronkhite-Canada Disease, Colonoscopy, and Endoscopy.

Francis Giardiello is a Gastroenterologist in Baltimore, Maryland. Dr. Giardiello is rated as a Distinguished provider by MediFind in Colonoscopy. His top areas of expertise are Familial Adenomatous Polyposis, Juvenile Polyposis Syndrome, Attenuated Familial Adenomatous Polyposis, Colonoscopy, and Endoscopy.

Arjun Vaid is a Gastroenterologist in Baltimore, Maryland. Dr. Vaid is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Jaundice, Irritable Bowel Syndrome (IBS), Hiccups, Colonoscopy, and Gastrectomy.

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

Chady Atallah is a General Surgeon in Baltimore, Maryland. Dr. Atallah is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Familial Colorectal Cancer, Colorectal Cancer, Anal Cancer, Colonoscopy, and Osteotomy.

Steven Zeddun is a Gastroenterologist in Chevy Chase, Maryland. Dr. Zeddun is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Achalasia, Crohn's Disease, Ulcerative Colitis, Endoscopy, and Colonoscopy.

James Novick, MD, specializes in gastroenterology and is board-certified by the American Board of Internal Medicine. Dr. Novick completed his medical degree, residency, and fellowship at the University of Maryland Medical Center. Dr. Novick is rated as an Advanced provider by MediFind in Colonoscopy. His top areas of expertise are Ulcerative Colitis, Gastrointestinal Bleeding, Viral Gastroenteritis, Endoscopy, and Colonoscopy.

Farzin Rashti is a Gastroenterologist in Columbia, Maryland. Dr. Rashti is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Hirschsprung Disease, Gastrointestinal Bleeding, Angiodysplasia of the Colon, Gastrectomy, and Endoscopy.

Dr. Shin specializes Barrett's esophagus, pancreatobiliary disease (pancreatic cyst, family history of pancreatic cancer), GI malignancy, and advanced endoscopy, including endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound (EUS). Dr. Shin is rated as an Experienced provider by MediFind in Colonoscopy. Her top areas of expertise are Pancreatic Cancer, Familial Pancreatic Cancer, Bile Duct Stricture, Endoscopy, and Pancreaticoduodenectomy.