Nikiya Asamoah-Clark is a Gastroenterologist in Washington, Washington, D.c.. Dr. Asamoah-Clark is rated as an Experienced provider by MediFind in the treatment of Swallowing Difficulty. Her top areas of expertise are Ulcerative Colitis, Crohn's Disease, Familial Adenomatous Polyposis, Endoscopy, and Gastrectomy.

Christopher Hayes is a Pediatrics specialist and a Gastroenterologist in Washington, Washington, D.c.. Dr. Hayes is rated as an Experienced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Fecal Impaction, Delayed Growth, Encopresis, and Familial Short Stature (FSS). Dr. Hayes is currently accepting new patients.

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 Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Eosinophilic Colitis, Endoscopy, and Gastrectomy.

Brian Kirsh, MD, specializes in gastroenterology and is board-certified by the American Board of Internal Medicine. He practices at Capital Digestive Care. Dr. Kirsh received his medical degree from the University of Toledo College of Medicine and Life Sciences and completed his residency at University of Cincinnati College of Medicine, followed by a fellowship at the University of Illinois Chicago. Dr. Kirsh is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Ulcerative Colitis, Colitis, Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy.

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

Mohammed Ali is a Gastroenterologist in Chevy Chase, Maryland. Dr. Ali is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Familial Adenomatous Polyposis, Thrombectomy, and Endoscopy.

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

Samuel Kallus is a Gastroenterologist in Chevy Chase, Maryland. Dr. Kallus is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Eosinophilic Colitis, Endoscopy, and Colonoscopy.

Thomas Winkler is an Otolaryngologist and an Oral and Maxillofacial Surgeon in Chevy Chase, Maryland. Dr. Winkler is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are DFNB1, Jones Syndrome, Nonallergic Rhinopathy, and Palatal Myoclonus.

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

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

Otolaryngologist Vaninder “Vinny” K. Dhillon specializes in endocrine surgery, laryngology, otolaryngology, parathyroid diseases and surgery, swallowing disorders, thyroid diseases and surgery, and voice problems. She treats both children and adults. After earning her medical degree from Keck School of Medicine of the University of Southern California, Dr. Dhillon completed a residency in otolaryngology at Los Angeles County and University of Southern California Medical Center. Dr. Dhillon’s research interests include the role of voice outcomes in patients after thyroid and parathyroid surgery when there is concern for vocal fold weakness or paralysis, evaluation of the role of office-based treatment on vocal fold paralysis, as well as neurogenic recovery of vocal fold paralysis. Dr. Dhillon is also interested in treatments for neurogenic chronic cough, which is refractory to other medical intervention. Dr. Dhillon is rated as an Experienced provider by MediFind in the treatment of Swallowing Difficulty. Her top areas of expertise are Laryngeal Nerve Damage, Spasmodic Dysphonia, Neurofibromatosis Type 2 (NF2), Thyroidectomy, and Parathyroidectomy.

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 Swallowing Difficulty. His top areas of expertise are Hiatal Hernia, Hernia, Congenital Diaphragmatic Hernia, Endoscopy, and Gallbladder Removal.

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

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 Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Irritable Bowel Syndrome (IBS), Indigestion, Gastroesophageal Reflux Disease (GERD), Portal Hypertension, and Gastrectomy.

Dr. George Bolen is a gastroenterologist affiliated with Sibley Memorial Hospital and Suburban Hospital, as well as an associate clinical professor of medicine at George Washington University School of Medicine and Georgetown University School of Medicine. He practices out of Capital Digestive Care’s Metropolitan Gastroenterology Group in Washington, D.C. and Bethesda, Md. Dr. Bolen has an expertise in hepatology and clinical research. Dr. Bolen earned his undergraduate degree from the Massachusetts Institute of Technology and his medical degree from Yale University School of Medicine. He completed a residency in internal medicine at New York Hospital, as well as a fellowship in gastroenterology. Dr. Bolen served as a Major in the United States Air Force Medical Corps from 1982-1986. Dr. Bolen is a diplomate of the American Board of Internal Medicine, as well as a member of the American College of Gastroenterology, the American Medical Association, the Crohn’s and Colitis Foundation of America, the Washington Society of Gastroenterology and the American Gastroenterological Association, amongst other organizations. Dr. Bolen has been named a Super Doctor by the Washington Post Magazine, a Top Doctor by Consumers’ Checkbook Magazine and a Top Doctor in the Washington, D.C., Baltimore and Washington-Baltimore areas by Castle Connolly. Dr. Bolen is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Gastric Dysmotility, Irritable Bowel Syndrome (IBS), and Indigestion.

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

Dr. Matthew B. Chandler is a gastroenterologist affiliated with Sibley Memorial Hospital, Georgetown University Hospital and George Washington University Hospital, where he is an assistant professor of medicine. He practices out of GWUMFA Department of Gastroenterology in Washington, D.C. Dr. Chandler has an expertise in liver disease. Dr. Chandler earned his medical degree from Emory University School of Medicine, where he received the Stanley Fellowship Grant for Research in Psychiatry and two scholarships. He was chief resident during his internal medicine residency at George Washington University School of Medicine, where he also completed a fellowship in gastroenterology. Dr. Chandler has contributed to numerous publications and presentations on gastroenterology topics. His primary research interest is inflammatory bowel disease. Dr. Chandler is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Irritable Bowel Syndrome (IBS), Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Endoscopy, and Colonoscopy.

Javad Khalilzadeh is a Gastroenterologist in Washington, Washington, D.c.. Dr. Khalilzadeh is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Painful Swallowing, Swallowing Difficulty, Gastrointestinal Bleeding, Gastrectomy, and Gastrostomy. Dr. Khalilzadeh is currently accepting new patients.

Julio Salcedo is a Gastroenterologist in Washington, Washington, D.c.. Dr. Salcedo is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Hemorrhoids, Gastroesophageal Reflux Disease (GERD), Gastrointestinal Bleeding, Endoscopy, and Gastrectomy.