Olaya Gutierrez is a Gastroenterologist in Washington, Washington, D.c.. Dr. Gutierrez is rated as a Distinguished provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Achalasia, Gastroesophageal Reflux Disease (GERD), Choledocholithiasis, Endoscopy, and Lithotripsy.

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

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

Dr. Drew Jung is an assistant professor of surgery in the Johns Hopkins Department of Surgery. He is an expert in minimally invasive surgery whose clinical focus is in laparoscopic and robotic surgeries. He has specialties in open and laparoscopic hernias, bariatrics, foregut, and quality improvement as it pertains to quality of care. Dr. Jung is focused on being able to get patients back on their feet sooner and have the potential to get back to work sooner than before. He is open to accepting all new patients to provide his expertise. Videos Dr. Andrew Jung M.D Bio Video. . His top areas of expertise are Hernia, Hemolytic Transfusion Reaction, Low Blood Pressure, Sleeve Gastrectomy, and Gastrectomy.

Dr. Brett Parker is a general surgeon and fellowship-trained minimally invasive foregut and bariatric surgeon. He is an Assistant Professor of Surgery at Johns Hopkins and also the Program Director for the Johns Hopkins Advanced GI and Minimally Invasive Surgery Fellowship Program. Dr. Parker is an expert in minimally invasive surgical techniques including advanced laparoscopy and robotic surgery, as well as therapeutic flexible endoscopy. He is interested in promoting the evolving indications for surgical repair of hiatal hernias, as well as adjunct procedures surgeons can use to reduce recurrence rates. He offers a wide range of interventions for GERD, including innovative endoscopic therapies, and promotes early surgical referral to discuss and tailor therapy to individual patient circumstances. Dr. Parker also has a robust abdominal wall reconstruction and weight loss surgery practice. He is widely published on the surgical outcomes of foregut surgery, emerging technologies, and innovation, as well as surgical simulation and skills transfer. Dr. Parker has consistently been selected as a Washingtonian Magazine Top Doctor in 2023, 2024, and 2025. As a member of the Johns Hopkins Division of Minimally Invasive Surgery in the Greater Washington Area, Dr. Parker is dedicated to the best, individualized, patient outcomes. Learn more about Dr. Parker and his partners within the Johns Hopkins Division of Minimally Invasive Surgery, the Johns Hopkins Heartburn Center and the Johns Hopkins Motility and Neurogastroenterology Center. Dr. Parker is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Hiatal Hernia, Hernia, Congenital Diaphragmatic Hernia, Endoscopy, and Gallbladder Removal.

Dr. Jonathan M. Koff is a gastroenterologist affiliated with Sibley Memorial Hospital and Washington Hospital Center. Dr. Koff practices out of Capital Digestive Care’s Metropolitan Gastroenterology Group, located in Washington, D.C. and Chevy Chase, Md. Dr. Koff has an expertise in esophageal disease and colon cancer detection and screening, in addition to general gastroenterology. Dr. Koff earned his undergraduate degree from Wesleyan University and his medical degree from Boston University School of Medicine. He completed a residency in internal medicine at Walter Reed National Military Medical Center, where he went on to complete a fellowship in gastroenterology. Dr. Koff served in the United States Army for 11 years, working as an internist at the Army clinic in the Pentagon, as a first responder on 9-11 and on a tour in Iraq at the 31st Combat Support Hospital in Mosul. Dr. Koff also went on to direct the Center for Liver Disease and the Inflammatory Bowel Disease Clinic at Walter Reed Army Medical Center, where he served as the director of clinical research in gastroenterology as well. He also completed the first double balloon enteroscopy in the United States Army and in Washington, D.C. Dr. Koff is a member of the American College of Gastroenterology. He is on Sibley Memorial Hospital’s Emergency Room Committee and Internal Medicine Peer Review Committee. Dr. Koff has been named a Top MD by Washingtonian Magazine. Dr. Koff has contributed to various publications and presentation on gastroenterology. Dr. Koff is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Eosinophilic Colitis, Endoscopy, and Gastrectomy.

Dr. Kathryn E. Kirk is a gastroenterologist affiliated with Sibley Memorial Hospital, George Washington University Hospital, Washington Hospital Center and the University of Maryland Baltimore Washington Medical Center. She practices out of Capital Digestive Care’s Metropolitan Gastroenterology Group in Washington, D.C., Chevy Chase, Md. and Bethesda, Md. Dr. Kirk has an expertise in gastroesophageal reflux disease, colorectal cancer screening and irritable bowel syndrome. She has special interests in colon cancer screening and prevention, celiac disease and eosinophilic esophagitis. Dr. Kirk earned her undergraduate degree from Princeton University and her medical degree from Weill Medical College of Cornell University. She completed a residency in internal medicine at Beth Israel Medical Center, followed by fellowships in hepatology and gastroenterology at Mount Sinai Hospital. Dr. Kirk is a member of the American College of Gastroenterology, the American Society for Gastrointestinal Endoscopy, the Crohn’s and Colitis Foundation of America and the American Gastroenterological Association. Dr. Kirk has been consistently recognized as a Top Doctor by Washingtonian magazine. Dr. Kirk is rated as an Experienced provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Crohn's Disease, Ulcerative Colitis, Gastroesophageal Reflux Disease (GERD), and Eosinophilic Colitis.

Samuel Muench is a Gastroenterologist in Chevy Chase, Maryland. Dr. Muench has been practicing medicine for over 10 years and is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Gastric Dysmotility, Colitis, Viral Gastroenteritis, Gastrectomy, and Colonoscopy.

Amy Shah is a Gastroenterologist in Chevy Chase, Maryland. Dr. Shah is rated as an Experienced provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Ulcerative Colitis, Crohn's Disease, Familial Adenomatous Polyposis, Endoscopy, and Colonoscopy.

Ajay Bakhshi is a Gastroenterologist in Bethesda, Maryland. Dr. Bakhshi is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Gastrointestinal Bleeding, Juvenile Polyposis Syndrome, Cronkhite-Canada Disease, Gastrectomy, and Gastrostomy.

Dr. Mohammed Kalan is a general surgeon affiliated with Sibley Memorial Hospital and George Washington University Hospital. He practices out of the Washington Institute of Surgery in Washington, D.C. and Chevy Chase, Md. Dr. Kalan has an expertise in abdominal surgery, clinical gastroenterology, colorectal surgery, gastrointestinal cancers, minimally invasive gastrointestinal surgery and robotic surgery. Dr. Kalan earned his MBBS from Byramjee Jeejeebhoy Medical College in India. He completed a residency in general surgery at Temple University School of Medicine, followed by a fellowship in laparoscopic surgery at George Washington University School of Medicine. Dr. Kalan is a fellow of the American College of Surgeons and the Royal College of Surgeons of London and Edinburgh, U.K. Dr. Kalan has earned numerous awards. His teaching awards include the Outstanding Faculty Teacher for the Department of Surgery from Georgetown University Hospital in 2001; the Golden Apple Award Nomination from Georgetown University Medical School in 2000; the Georgetown Caring Star from Georgetown University Hospital in 2009 and 2003; and the W.L. Gore/Stuart I. Myers Award for Academic Excellence from Temple University in 1998. Dr. Kalan has also been named one of America’s Top Surgeons by the Consumers’ Research Council of America from 2010-2014; and a Top Doctor in General and Laparoscopic Surgery by Washingtonian magazine in 2002. Dr. Kalan is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Retroperitoneal Inflammation, Gallbladder Disease, Appendicitis, Hernia Surgery, and Colostomy.

Anuradha Arun is a primary care provider, practicing in Family Medicine in Silver Spring, Maryland. Dr. Arun is rated as an Experienced provider by MediFind in the treatment of Achalasia. Her top areas of expertise are Sitosterolemia, Vitamin D Deficiency, High Cholesterol, and Glucocorticoid-Remediable Aldosteronism.

Dr. Collier is graduate from Georgetown University Medical School, Washington D.C. and he has been in practice since 2000 in Rockville, MD. Dr. Collier received advanced training in Gastroenterology and Endoscopic Ultrasound from prestigious organizations such as Georgetown University Hospital, Washington Veteran's Hospital and the National Institutes of Health. Dr. Collier's top priority is to advance the delivery of care for patients suffering from digestive health conditions. His goal is to provide high quality patient care, medical diagnosis and the most effective treatment. He is married with three children. For more information on Dr. Collier, visit CapitalDigestiveCare.com. Dr. Collier is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Irritable Bowel Syndrome (IBS), Indigestion, Gastroesophageal Reflux Disease (GERD), Portal Hypertension, and Gastrectomy.

Zachary Borman is a Gastroenterologist in North Bethesda, Maryland. Dr. Borman is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Diarrhea, Trichohepatoenteric Syndrome, Hemorrhoids, Gastrectomy, and Colonoscopy.

Eric Pollack is a Gastroenterologist in North Bethesda, Maryland. Dr. Pollack is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Diverticular Disease, and Indigestion.

Nyen Chong is a Thoracic Surgeon in Silver Spring, Maryland. Dr. Chong is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Pleuropulmonary Blastoma, Lung Cancer, Fibrosing Mediastinitis, Thymectomy, and Endoscopy. Dr. Chong is currently accepting new patients.

Brian Ciampa is a Gastroenterologist in Bethesda, Maryland. Dr. Ciampa is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Ulcerative Colitis, Indigestion, Diarrhea, Trichohepatoenteric Syndrome, and Colonoscopy.

Rahul Gilotra is a Gastroenterologist in Wheaton, Maryland. Dr. Gilotra is rated as an Experienced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Gastrointestinal Bleeding, Intestinal Cancer, Chronic Erosive Gastritis, Gastrectomy, and Gastrostomy.

Edward Chan is a Thoracic Surgeon in Washington, Washington, D.c.. Dr. Chan is rated as an Advanced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Heart Tumor, Hiatal Hernia, Diaphragmatic Hernia, Endoscopy, and Lung Transplant.

Shervin Shafa is a Gastroenterologist in Washington, Washington, D.c.. Dr. Shafa is rated as an Advanced provider by MediFind in the treatment of Achalasia. His top areas of expertise are Barrett Esophagus, Achalasia, Esophageal Perforation, Endoscopy, and Gastrectomy. Dr. Shafa is currently accepting new patients.