Enrique Daza is a General Surgeon in Bethesda, Maryland. Dr. Daza 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.

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.

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.

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

Jerome Byam is an assistant professor of surgery at Johns Hopkins School of Medicine. Dr. Byam is an acute care surgeon with a robust general surgery and trauma surgery practice based at Suburban Hospital in Bethesda, MD. He has experience treating both routine and complex surgical patients using a variety of techniques including performing minimally invasive procedures using robotics and laparoscopy. After earning his medical degree from Meharry Medical College in Nashville, TN, Dr. Byam completed a surgical residency at the University of Louisville in Louisville, KY. He underwent further subspecialty training at the University of Chicago, completing a fellowship in solid organ Abdominal Transplant surgery. Dr. Byam worked as an acute care general surgeon in Washington DC before joining the staff at Johns Hopkins. Dr. Byam is a fellow in the American College of Surgeons. He remains active in his local community, is an avid triathlete, and enjoys spending time with his wife and daughter. Selected Publications Barnett RE, Keskey RC, Linsky PL, Byam J, Mathis TJ, Cheadle WG. Tension-free Open Mesh Cooper's Ligament Repair for Femoral Hernia. Am Surg. 2013 Sep;79(9):952-3. Byam J, Renz J, Millis JM. Liver transplantation for hepatocellular carcinoma. Hepatobiliary Surg Nutr 2013;2(1):22-30. Byam Jerome, Boone P, Azzam RK, Millis JM. Absence of early graft loss from hepatic artery thrombosis in pediatric liver transplantation with use of implantation Doppler probe. Journal International Pediatric Transplantation Association. Presented at IPTA Meeting July 2013. Jones, Christopher M, Byam JA, Iannitti DA, Marvin, MR. (2014) Hepatobiliary Ultrasound. In Schrope (Ed.), Surgical and Interventional Ultrasound. (pp. 73-86) New York, NY: McGraw-Hill Education. Dr. Byam is rated as an Experienced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Hernia, Gallbladder Disease, Umbilical Hernia, Gastrostomy, and Hernia Surgery.

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 Choledocholithiasis. Her top areas of expertise are Hernia, Ogilvie Syndrome, Obesity in Children, Sleeve Gastrectomy, and Gastrectomy.

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. Mohammed Kalan is a general surgeon affiliated with Sibley Memorial Hospital and George Washington University Hospital. He practices out of the Washington Institute of Surgery in Washington, D.C. and Chevy Chase, Md. Dr. Kalan has an expertise in abdominal surgery, clinical gastroenterology, colorectal surgery, gastrointestinal cancers, minimally invasive gastrointestinal surgery and robotic surgery. Dr. Kalan earned his MBBS from Byramjee Jeejeebhoy Medical College in India. He completed a residency in general surgery at Temple University School of Medicine, followed by a fellowship in laparoscopic surgery at George Washington University School of Medicine. Dr. Kalan is a fellow of the American College of Surgeons and the Royal College of Surgeons of London and Edinburgh, U.K. Dr. Kalan has earned numerous awards. His teaching awards include the Outstanding Faculty Teacher for the Department of Surgery from Georgetown University Hospital in 2001; the Golden Apple Award Nomination from Georgetown University Medical School in 2000; the Georgetown Caring Star from Georgetown University Hospital in 2009 and 2003; and the W.L. Gore/Stuart I. Myers Award for Academic Excellence from Temple University in 1998. Dr. Kalan has also been named one of America’s Top Surgeons by the Consumers’ Research Council of America from 2010-2014; and a Top Doctor in General and Laparoscopic Surgery by Washingtonian magazine in 2002. Dr. Kalan is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Retroperitoneal Inflammation, Gallbladder Disease, Appendicitis, Hernia Surgery, and Colostomy.

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.

George Conrad is a General Surgeon in Silver Spring, Maryland. Dr. Conrad is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Cellulitis, Ogilvie Syndrome, Gallstones, Hernia Surgery, and Small Bowel Resection. Dr. Conrad is currently accepting new patients.

Alan Kravitz is a General Surgeon in Rockville, Maryland. Dr. Kravitz is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Hernia, Umbilical Hernia, Cholecystitis, and Gallbladder Disease. Dr. Kravitz is currently accepting new patients.

Eric Oristian is a General Surgeon in Wheaton, Maryland. Dr. Oristian is rated as an Advanced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Breast Cancer, Angiosarcoma, Paget Disease of the Breast, Inflammatory Breast Cancer, and Lymphadenectomy. Dr. Oristian 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.

Jason Brodsky is a General Surgeon in Rockville, Maryland. Dr. Brodsky is rated as a Distinguished provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Ogilvie Syndrome, Cellulitis, Gallbladder Disease, Hernia Surgery, and Small Bowel Resection.

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

Thomas Zorc is a General Surgeon in Chevy Chase, Maryland. Dr. Zorc is rated as an Experienced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Ogilvie Syndrome, Lump in the Abdomen, Hernia, Cellulitis, and Hernia Surgery.

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 Experienced provider by MediFind in the treatment of Choledocholithiasis. His top areas of expertise are Ulcerative Colitis, Colitis, Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy.

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