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 Gallstones. 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 Gallstones. His top areas of expertise are Gallstones, Gallbladder Disease, Bile Duct Obstruction, Gallbladder Removal, and Endoscopy. Dr. Haddad is currently accepting new patients.

Ilan Vavilin is a primary care provider, practicing in Internal Medicine in Washington, Washington, D.c.. Dr. Vavilin is rated as a Distinguished provider by MediFind in the treatment of Gallstones. His top areas of expertise are Gallstones, Gallbladder Disease, Acute Pancreatitis, Hereditary Pancreatitis, and Gallbladder Removal.

Shandiz Shahbazi is a Gastroenterologist in Washington, Washington, D.c.. Dr. Shahbazi is rated as a Distinguished provider by MediFind in the treatment of Gallstones. Her top areas of expertise are Gallstones, Gallbladder Disease, Acute Pancreatitis, Hereditary Pancreatitis, and Gallbladder Removal.

Hemanth Gavini is a Gastroenterologist in Washington, Washington, D.c.. Dr. Gavini is rated as a Distinguished provider by MediFind in the treatment of Gallstones. His top areas of expertise are Bile Duct Obstruction, Pancreatic Cancer, Bile Duct Stricture, Endoscopy, and Pancreatectomy. Dr. Gavini 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 Gallstones. His top areas of expertise are Jaundice, Bile Duct Obstruction, Bile Duct Cysts, Endoscopy, and Gastrostomy.

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 Gallstones. His top areas of expertise are Hernia, Femoral Hernia, Cholecystitis, Hernia Surgery, and Ureteral Reconstruction. Dr. Paul is currently accepting new patients.

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 Gallstones. His top areas of expertise are Hernia, Femoral Hernia, Retroperitoneal Inflammation, Colostomy, and Hernia Surgery.

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

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 Gallstones. His top areas of expertise are Pancreatic Cancer, Hernia, Gallbladder Disease, Pancreatectomy, and Gastrectomy.

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 Gallstones. His top areas of expertise are Retroperitoneal Inflammation, Gastrointestinal Perforation, Delirium, Hip Replacement, and Gastrostomy. Dr. Evans 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 Gallstones. His top areas of expertise are Hernia, Umbilical Hernia, Epidural Lipomatosis, Hernia Surgery, and Gastrostomy. Dr. Golocovsky is currently accepting new patients.

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 Gallstones. Her top areas of expertise are Bile Duct Obstruction, Pancreatic Cancer, Gallbladder Disease, Endoscopy, and Hepato-Pancreato-Biliary Surgery.

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 Gallstones. His top areas of expertise are Breast Cancer, Pancreatic Cancer, Colorectal Cancer, Mastectomy, and Pancreatectomy. Dr. Chu is currently accepting new patients.

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

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. Dr. Jung is rated as an Experienced provider by MediFind in the treatment of Gallstones. His top areas of expertise are Hernia, Hemolytic Transfusion Reaction, Low Blood Pressure, Sleeve Gastrectomy, and Gastrectomy.

M Attebery is a General Surgeon in Washington, Washington, D.c.. Dr. Attebery is rated as an Experienced provider by MediFind in the treatment of Gallstones. Her top areas of expertise are Breast Lump, Breast Cancer, Paget Disease of the Breast, Hernia Surgery, and Lymphadenectomy. Dr. Attebery is currently accepting new patients.

Dr. Katherine Lamond is the Medical Director of the Johns Hopkins Center for Bariatrics Surgery at Sibley Memorial Hospital and Assistant Professor of Surgery for Johns Hopkins School of Medicine. She specializes in laparoscopic bariatric surgery, and performs the Roux-en-Y Gastric Bypass, Sleeve Gastrectomy and Adjustable Gastric Banding at Sibley. She is also a surgeon with Johns Hopkins Surgery at Sibley, where she practices general surgery and advanced laparoscopic surgery. Dr. Lamond grew up in Maryland and attended Dartmouth College for her undergraduate education, before moving back to the area to attend Georgetown University School of Medicine. Her internship and residency in General Surgery were completed at the University of Virginia in Charlottesville. She then completed a fellowship at Johns Hopkins Hospital in Minimally Invasive and Bariatric Surgery. More recently, Dr. Lamond served as Assistant Professor of Surgery at the University of Maryland School of Medicine from 2012-2015, prior to transitioning her practice to Sibley Memorial Hospital. She is a Fellow of the American College of Surgeons and is active in both the Society of American Gastrointestinal and Endoscopic Surgeons and the American Society for Metabolic and Bariatric Surgery. Videos Meet Katherine Lamond, M.D., Minimally Invasive Surgeon Surgical Weight Loss Options 101 GERD and Bariatric Surgery FAQ. Dr. Lamond is rated as an Experienced provider by MediFind in the treatment of Gallstones. Her top areas of expertise are Hernia, Ogilvie Syndrome, Obesity in Children, Sleeve Gastrectomy, and Gastrectomy.

Paul Kim is a General Surgeon in Washington, Washington, D.c.. Dr. Kim is rated as an Experienced provider by MediFind in the treatment of Gallstones. His top areas of expertise are Hernia, Hiatal Hernia, Congenital Diaphragmatic Hernia, Choledocholithiasis, and Hernia Surgery. Dr. Kim is currently accepting new patients.

Yuri Genyk is a Transplant Surgeon and a General Surgeon in Washington, Washington, D.c.. Dr. Genyk is rated as an Experienced provider by MediFind in the treatment of Gallstones. His top areas of expertise are Cholestasis, Pancreatic Cancer, Cholangiocarcinoma (Bile Duct Cancer), Liver Transplant, and Hepatectomy.