Michael Williams is a General Surgeon in Washington, Washington, D.c.. Dr. Williams is rated as an Experienced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Gallbladder Disease, Cholecystitis, Myocardial Contusion, Gastrostomy, and Hernia Surgery. Dr. Williams is currently accepting new patients.

Nadim Haddad is a Gastroenterologist in Washington, Washington, D.c.. Dr. Haddad is rated as a Distinguished provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Gallstones, Gallbladder Disease, Bile Duct Obstruction, Gallbladder Removal, and Endoscopy. Dr. Haddad is currently accepting new patients.

Mario Golocovsky is a General Surgeon in Washington, Washington, D.c.. Dr. Golocovsky is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Hernia, Umbilical Hernia, Epidural Lipomatosis, Hernia Surgery, and Gastrostomy. Dr. Golocovsky is currently accepting new patients.

Hemanth Gavini is a Gastroenterologist in Washington, Washington, D.c.. Dr. Gavini is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Bile Duct Obstruction, Pancreatic Cancer, Bile Duct Stricture, Endoscopy, and Pancreatectomy. Dr. Gavini is currently accepting new patients.

Paul Lin is a General Surgeon in Washington, Washington, D.c.. Dr. Lin is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Pancreatic Cancer, Hernia, Gallbladder Disease, Pancreatectomy, and Gastrectomy.

Scott Rehrig is a General Surgeon in Washington, Washington, D.c.. Dr. Rehrig is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Retroperitoneal Inflammation, Ogilvie Syndrome, Cholecystitis, Colostomy, and Gallbladder Removal. Dr. Rehrig is currently accepting new patients.

Alexander Evans is a General Surgeon and an Intensive Care Medicine provider in Washington, Washington, D.c.. Dr. Evans is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Retroperitoneal Inflammation, Gastrointestinal Perforation, Delirium, Hip Replacement, and Gastrostomy. Dr. Evans is currently accepting new patients.

Quyen Chu is a Surgical Oncologist and a General Surgeon in Washington, Washington, D.c.. Dr. Chu is rated as an Experienced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Breast Cancer, Pancreatic Cancer, Colorectal Cancer, Mastectomy, and Pancreatectomy. Dr. Chu is currently accepting new patients.

Walid Chalhoub is a Gastroenterologist in Washington, Washington, D.c.. Dr. Chalhoub is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Jaundice, Bile Duct Obstruction, Bile Duct Cysts, Endoscopy, and Gastrostomy.

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

Margaret “Geri” Keane is a gastroenterologist specializing in Therapeutic and Bariatric endoscopy. She primarily treats people who require assistance with weight loss or who have weight regain or a complication following Bariatric Surgery. She offers the full range of minimally invasive endoscopic approaches to weight loss, including endoscopic sleeve gastroplasty, the gastric balloon procedure or transoral gastric outlet reduction. She also sees patients who have biliary complaints such as bile duct stones or strictures, cancers of the bile duct or and diseases of the pancreas such as pancreatic cysts, to name a few. She performs all forms of therapeutic EUS and ERCP including cholangioscopy. Dr. Keane earned her medical degree at Guy’s, King’s and St Thomas’ Medical school in London. She completed her internal medicine residency at The Hammersmith and Charing Cross hospitals in London, followed by a fellowship in gastroenterology and hepatology at University College London Hospitals, the Royal Free Hospital and King’s College Hospital in London. During her gastroenterology fellowship, Dr. Keane undertook a master’s degree in medical education and a Ph.D. at University College London. Her doctorate explored novel diagnostic and therapeutic strategies for the management of pancreatic cysts. Following her gastroenterology fellowship, Dr. Keane completed a fellowship in hepatology and endoscopic retrograde cholangiopancreatography/endoscopic ultrasound at King’s College London, followed by a two-year advanced endoscopy fellowship at Johns Hopkins. She is certified in general internal medicine, gastroenterology and hepatology by the Joint Royal Colleges of Physicians Training Board of the United Kingdom. She is a member of the Royal College of Physicians of the United Kingdom and is a fellow of the Higher Education Academy. She is a recipient of the American Society for Gastrointestinal Endoscopy 2022 Endoscopic Training Award, which enabled her to gain dedicated training in bariatric endoscopy at Mohak bariatric center in Indore, India, one of the busiest bariatric centers in the world. Dr. Keane’s research interests include Bariatric Endoscopy, Endoscopic innovation and early diagnostic strategies for pancreatic and biliary tract cancers including the management of pancreatic cysts. She has published more than 70 original articles, editorials, book chapters and review articles. Dr. Keane is rated as an Experienced provider by MediFind in the treatment of Choledocholithiasis. Her top areas of expertise are Bile Duct Obstruction, Pancreatic Cancer, Gallbladder Disease, Endoscopy, and Hepato-Pancreato-Biliary Surgery.

Dr. James Robey is a Johns Hopkins surgeon who specializes in minimally invasive procedures. He has provided surgical services to Washington-area residents for over 30 years. He takes pride in providing a customized approach to care to ensure the best possible outcome. Dr. Robey is consistently recognized as a top doctor in the region by Bethesda Magazine and Washingtonian. Selected Publications “Relationship between tumor necrosis factor, eicosanoids and platelet activating factor as mediators of endotoxin-induced shock in mice.” Adam K. Myers, James W. Robey.British Journal of Pharmacology. (1990) 99, 499-502. “Ruptured, infected popliteal artery aneurysm, a case report.” James W. Robey, et al. Vascular Surgery. 1998. Dr. Robey is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Hernia, Femoral Hernia, Retroperitoneal Inflammation, Colostomy, and Hernia Surgery.

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

Martin Paul is a General Surgeon in Washington, Washington, D.c.. Dr. Paul is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Hernia, Femoral Hernia, Cholecystitis, Hernia Surgery, and Ureteral Reconstruction. Dr. Paul is currently accepting new patients.

Enrique Daza-Racines is a General Surgeon in Bethesda, Maryland. Dr. Daza-Racines is rated as a Distinguished provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Gallstones, Choledocholithiasis, Gallbladder Disease, Hernia, and Hernia Surgery.

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

Ira Tannebaum is a General Surgeon in Washington, Washington, D.c.. Dr. Tannebaum is rated as an Experienced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Gallbladder Disease, Gallstones, Choledocholithiasis, Hernia Surgery, and Gastrostomy.

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

Dr. Dominique Howard is a gastroenterologist affiliated with Sibley Memorial Hospital and George Washington University Hospital. She practices out of Capital Digestive Care’s Metropolitan Gastroenterology Group in Washington, D.C. and Chevy Chase, Md. Dr. Howard has an expertise in inflammatory bowel disease, irritable bowel syndrome, gastroesophageal reflux disease, esophageal pH testing, capsule endoscopy, colorectal cancer screening and diseases of the pancreas and gallbladder. Dr. Howard earned her undergraduate degree from Georgetown University and her medical degree from George Washington University School of Medicine. She completed a residency in internal medicine at George Washington University Hospital, followed by a fellowship in gastroenterology. Dr. Howard is a member of the American Gastroenterological Association, the American Society of Gastrointestinal Endoscopy, the Crohn’s and Colitis Foundation and the William Earl Clark Society. Dr. Howard is rated as an Experienced provider by MediFind in the treatment of Choledocholithiasis. Her top areas of expertise are Gastroesophageal Reflux Disease (GERD), Trichohepatoenteric Syndrome, Diarrhea, and Attenuated Familial Adenomatous Polyposis.

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