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 a Distinguished provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). 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 a Distinguished provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Diverticular Disease, and Indigestion.

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

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

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 Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Hiatal Hernia, Hernia, Congenital Diaphragmatic Hernia, Endoscopy, and Gallbladder Removal.

. Dr. Handy is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Spinocerebellar Ataxia Type 12, Spinocerebellar Ataxia Type 15, Spinocerebellar Ataxia Type 8, and Spinocerebellar Ataxia Type 10.

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 Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Crohn's Disease, Ulcerative Colitis, Gastroesophageal Reflux Disease (GERD), and Eosinophilic Colitis.

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 Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Ulcerative Colitis, Colitis, Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy.

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 Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Eosinophilic Colitis, Endoscopy, and Gastrectomy.

Amy Shah is a Gastroenterologist in Chevy Chase, Maryland. Dr. Shah is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). 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 Gastroesophageal Reflux Disease (GERD). 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 Gastroesophageal Reflux Disease (GERD). 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 Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Eosinophilic Colitis, Endoscopy, and Colonoscopy.

Mary Callsen, M.D., practices internal medicine at Johns Hopkins Community Physicians Downtown Bethesda. She received her medical degree from The Ohio State University College of Medicine, and completed her residency in internal medicine at Brooke Army Medical Center in San Antonio, Texas. In 2014, Washingtonian magazine recognized Dr. Callsen as one of the area’s “Top Doctors.” Videos Caring for the CommunityMeet Dr. Mary Callsen. Dr. Callsen is rated as an Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Sitosterolemia, Pityriasis Rosea, Hypothyroidism, and Obesity in Children.

Ajay Bakhshi is a Gastroenterologist in Bethesda, Maryland. Dr. Bakhshi is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). 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 Experienced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). His top areas of expertise are Gastrointestinal Bleeding, Gallstones, Choledocholithiasis, Endoscopy, and Gastrectomy.

A Washington-area native, Dr. Erica R. Cohen is a highly-accomplished physician. She is a trained Inflammatory Bowel Disease specialist which gives her unique expertise in Crohn's disease, ulcerative colitis, microscopic colitis, and refractory c. difficile colitis infection. In addition, she treats a wide range of concerns such as celiac disease, colon cancer screening, and diverticular disease. Dr. Cohen is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Diverticular Disease, Crohn's Disease, Ulcerative Colitis, Viral Gastroenteritis, and Endoscopy.

Dr. Jessica D. Korman is a gastroenterologist affiliated with Suburban Hospital. She practices out of Capital Digestive Care’s Metropolitan Gastroenterology Group in Washington, D.C. and Bethesda, Md. Dr. Korman has an expertise in colorectal cancer screening, as well as anal cancer screening and prevention. Dr. Korman earned her undergraduate degree from the University of Rochester and her medical degree from the Mount Sinai School of Medicine, where she conducted research with the division of liver diseases. She completed a residency in internal medicine at Montefiore Medical Center, where she also completed a fellowship in gastroenterology and was recognized by the Leo M. Davidoff Society for Outstanding Achievement in the Teaching of Medical Students. Dr. Korman also earned the Dr. Marcel Zimetbaum Complete Physician Award by the division of gastroenterology at Montefiore Medical Center. Dr. Korman is a member of the American College of Gastroenterology, the American Gastroenterological Association and the American Society for Gastrointestinal Endoscopy. Dr. Korman has been repeatedly named a Top MD in Washingtonian Magazine. Dr. Korman is rated as an Advanced provider by MediFind in the treatment of Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Colonic Malakoplakia, Diarrhea, Trichohepatoenteric Syndrome, and Irritable Bowel Syndrome (IBS).

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 Gastroesophageal Reflux Disease (GERD). Her top areas of expertise are Laryngeal Nerve Damage, Spasmodic Dysphonia, Neurofibromatosis Type 2 (NF2), Thyroidectomy, and Parathyroidectomy.

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