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

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

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

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

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 Congenital Diaphragmatic Hernia. Her top areas of expertise are Gastroesophageal Reflux Disease (GERD), Trichohepatoenteric Syndrome, Diarrhea, and Attenuated Familial Adenomatous Polyposis.

Martin Paul is a General Surgeon in Washington, Washington, D.c.. Dr. Paul is rated as an Experienced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Hernia, Femoral Hernia, Cholecystitis, Hernia Surgery, and Ureteral Reconstruction.

Hiral Patel is a General Surgeon in Alexandria, Virginia. Dr. Patel is rated as an Experienced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Ogilvie Syndrome, Gallstones, Choledocholithiasis, Colostomy, and Hernia Surgery.

Julio Salcedo is a Gastroenterologist in Washington, Washington, D.c.. Dr. Salcedo is rated as an Experienced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Hemorrhoids, Gastroesophageal Reflux Disease (GERD), Gastrointestinal Bleeding, Endoscopy, and Gastrectomy.

Barry Greene is a General Surgeon in Washington, Washington, D.c.. Dr. Greene is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Short Bowel Syndrome, Obesity, Hiatal Hernia, Sleeve Gastrectomy, and Endoscopy. Dr. Greene is currently accepting new patients.

Patrick Jackson is a General Surgeon and a Surgical Oncologist in Washington, Washington, D.c.. Dr. Jackson is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Hernia, Hiatal Hernia, Congenital Diaphragmatic Hernia, Pancreatectomy, and Vagotomy. Dr. Jackson is currently accepting new patients.

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

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

Diego Kuperschmit is a Gastroenterologist in Arlington, Virginia. Dr. Kuperschmit is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. 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 Congenital Diaphragmatic Hernia. His top areas of expertise are Familial Adenomatous Polyposis, Hemorrhoids, Turcot Syndrome, Endoscopy, and Colonoscopy.

Saad Haque is a Gastroenterologist in Arlington, Virginia. Dr. Haque is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Hiatal Hernia, Congenital Diaphragmatic Hernia, Stomach Cancer, Endoscopy, and Gastrectomy.

Robert Musselman is a Gastroenterologist in Washington, Washington, D.c.. Dr. Musselman is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Gastric Dysmotility, Hemorrhoids, and Diverticular Disease.

Michael Brown is a Gastroenterologist in Alexandria, Virginia. Dr. Brown is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Familial Colorectal Cancer, Colorectal Cancer, Gastrectomy, and Endoscopy.

Jack Huang is a Gastroenterologist in Alexandria, Virginia. Dr. Huang is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Chronic Idiopathic Constipation (CIC), Trichohepatoenteric Syndrome, Gastrectomy, and Endoscopy.

Ronald Barkin is a Gastroenterologist and a Hepatologist in Alexandria, Virginia. Dr. Barkin is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Gastric Dysmotility, Painful Swallowing, Swallowing Difficulty, and Hiatal Hernia. Dr. Barkin is currently accepting new patients.

Robert Hally is a Gastroenterologist in Alexandria, Virginia. Dr. Hally is rated as an Advanced provider by MediFind in the treatment of Congenital Diaphragmatic Hernia. His top areas of expertise are Barrett Esophagus, Familial Adenomatous Polyposis, Gastroesophageal Reflux Disease (GERD), and Swallowing Difficulty.