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.

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

Nazaneen Grant is an Otolaryngologist in Washington, Washington, D.c.. Dr. Grant is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. Her top areas of expertise are Recurrent Respiratory Papillomatosis, Laryngeal Nerve Damage, Throat Cancer, Laryngeal Cancer, and Laryngectomy. Dr. Grant is currently accepting new patients.

Bruce Davidson is an Otolaryngologist in Washington, Washington, D.c.. Dr. Davidson is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Salivary Gland Tumors, Thyroid Cancer, Follicular Thyroid Cancer, Thyroidectomy, and Laryngectomy. Dr. Davidson is currently accepting new patients.

Steven Bielamowicz is an Otolaryngologist in Washington, Washington, D.c.. Dr. Bielamowicz is rated as an Experienced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Perichondritis, Laryngeal Nerve Damage, Laryngitis, Laryngectomy, and Endoscopy.

Diego Kuperschmit is a Gastroenterologist in Arlington, Virginia. Dr. Kuperschmit is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Familial Adenomatous Polyposis, Gastric Dysmotility, Gardner Syndrome, Endoscopy, and Pancreatectomy.

Gabriel Herman is a Gastroenterologist in Arlington, Virginia. Dr. Herman is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Familial Adenomatous Polyposis, Hemorrhoids, Turcot Syndrome, Endoscopy, and Colonoscopy.

Rachana Potru is a Gastroenterologist in Arlington, Virginia. Dr. Potru is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. Her top areas of expertise are Viral Gastroenteritis, Colitis, Irritable Bowel Syndrome (IBS), Endoscopy, and Gastrectomy.

Truc Trinh is a Gastroenterologist in Arlington, Virginia. Dr. Trinh is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. Her top areas of expertise are Familial Adenomatous Polyposis, Indigestion, Crohn's Disease, Endoscopy, and Gastrectomy.

Pradeep Gupta is a Gastroenterologist in Arlington, Virginia. Dr. Gupta is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Attenuated Familial Adenomatous Polyposis, Juvenile Polyposis Syndrome, Cronkhite-Canada Disease, Endoscopy, and Colonoscopy.

Zone-en Lee is a Gastroenterologist in Washington, Washington, D.c.. Dr. Lee is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. Her top areas of expertise are Familial Adenomatous Polyposis, Irritable Bowel Syndrome (IBS), Gastroesophageal Reflux Disease (GERD), Endoscopy, and Gastrectomy.

Ramsey Daher is a Gastroenterologist in Washington, Washington, D.c.. Dr. Daher is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Heartburn, Gastric Dysmotility, Familial Adenomatous Polyposis, Gastrectomy, and Colonoscopy.

Robert Musselman is a Gastroenterologist in Washington, Washington, D.c.. Dr. Musselman 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, Hemorrhoids, and Diverticular Disease.

Thomas Loughney is a Gastroenterologist in Washington, Washington, D.c.. Dr. Loughney is rated as an Advanced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Familial Adenomatous Polyposis, Colonoscopy, and Endoscopy. Dr. Loughney is currently accepting new patients.

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

Christopher Duke, MD is a second-generation physician and native Washingtonian. His parents practiced medicine in Washington for four decades. Chris has practiced internal medicine here for 30 years. He attended George Washington University for his undergraduate and medical degrees. He completed Internal Medicine training at Penn State University. Chris practices evidence-based medicine while emphasizing empathy for his patients and their families. He personally knows and refers patients to the many outstanding specialists in Washington. He is excited to team with his patients to optimize their health and enjoyment of life. He has taught medical students at George Washington as an associate professor of medicine. He has been recognized by Washingtonian Magazine as a “Top Doctor” including in 2022. Outside of work, he enjoys traveling with wife Lilian and children Jacqueline and James. He loves attending Notre Dame football games and spoiling his pugs- Mini and Rockne! LinkedIn https://www.linkedin.com/in/christopher-duke-md-1126314. Dr. Duke is rated as an Experienced provider by MediFind in the treatment of Swallowing Difficulty. His top areas of expertise are Rabson-Mendenhall Syndrome, Vitamin B12 Deficiency, Subacute Combined Degeneration, and Cellulitis.

Aline Pishvaian is a Gastroenterologist in Washington, Washington, D.c.. Dr. Pishvaian is rated as an Experienced provider by MediFind in the treatment of Swallowing Difficulty. Her top areas of expertise are Crohn's Disease, Ulcerative Colitis, Diarrhea, and Trichohepatoenteric Syndrome.

Antoinette Saddler, M.D., is a fellowship-trained gastroenterologist specializing in general gastroenterology and management of patients with mild to severe malnutrition. She has experience in treating complex gastrointestinal disorders including short bowel syndrome, celiac disease, inflammatory bowel disease, irritable bowel syndrome, gastrointestinal malignancies, gastrointestinal tract dysmotility and high-output ostomies, as well as the malnutrition associated with these conditions. Dr. Saddler has held positions at the University of Kentucky, MedStar Washington Hospital Center, the University of Virginia School of Medicine, and the George Washington University School of Medicine and Health Sciences. She has also been a private practice gastroenterologist. Her professional activities include regional and national lectures on the management of gastrointestinal disorders associated with malnutrition. She previously served as the director of medical nutrition at the University of Virginia Digestive Health Center, where patients with complex gastrointestinal and nutritional disorders receive care. Dr. Saddler obtained her medical degree at the Case Western Reserve University School of Medicine. She completed her residency training in internal medicine at New York-Presbyterian/Weill Cornell Medical Center followed by fellowship training in gastroenterology at Memorial Sloan Kettering Cancer Center. She pursued additional fellowship training there in clinical nutrition. Dr. Saddler is rated as an Experienced provider by MediFind in the treatment of Swallowing Difficulty. Her top areas of expertise are Gastroparesis, Chronic Erosive Gastritis, Familial Adenomatous Polyposis, Endoscopy, 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 Swallowing Difficulty. His top areas of expertise are Hiatal Hernia, Hernia, Congenital Diaphragmatic Hernia, Endoscopy, and Gallbladder Removal.