The 20 Best Endoscopy Doctors in District of Columbia, US

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 Advanced provider by MediFind in Endoscopy. She is also highly rated in 4 other conditions, according to our data. Her clinical expertise encompasses Bile Duct Obstruction, Pancreatic Cancer, Cholestasis, Endoscopy, and Hepato-Pancreato-Biliary Surgery.

Walid Chalhoub is a Gastroenterologist practicing medicine in Washington, Washington, D.c.. Dr. Chalhoub is rated as a Distinguished provider by MediFind in Endoscopy. He is also highly rated in 21 other conditions, according to our data. His clinical expertise encompasses Jaundice, Bile Duct Obstruction, Bile Duct Cysts, Endoscopy, and Gastrostomy.

Adeyinko Laiyemo is a Gastroenterologist practicing medicine in Washington, Washington, D.c.. Dr. Laiyemo is rated as a Distinguished provider by MediFind in Endoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Familial Colorectal Cancer, Colorectal Cancer, Gastrointestinal Bleeding, Colonoscopy, and Endoscopy.

Marie Borum is a Hepatologist practicing medicine in Washington, Washington, D.c.. Dr. Borum is rated as a Distinguished provider by MediFind in Endoscopy. She is also highly rated in 12 other conditions, according to our data. Her clinical expertise encompasses Viral Gastroenteritis, Colitis, Ulcerative Colitis, Colonoscopy, and Endoscopy.

Dr. Louis Y. Korman is a gastroenterologist affiliated with Sibley Memorial Hospital, Washington Hospital Center and George Washington University Hospital. He is also an instructor of the internal medicine and gastroenterology training program at the Veterans Administration Hospital/Georgetown University Residency and Fellowship program. He practices out of Capital Digestive Care’s Metropolitan Gastroenterology Group, located in Washington, D.C. and Bethesda, Md. Dr. Korman earned his medical degree at SUNY Upstate Medical University. He completed a residency in internal medicine at SUNY Upstate Medical Center, as well as a fellowship in gastroenterology. Dr. Korman is a fellow of the American College of Gastroenterology and a member of the American Society of Gastrointestinal Endoscopy, the American Association for the Advancement of Science, the American College of Physicians, the American Medical Association, as well as other professional organizations. He was previously a chairman of the Crohn’s and Colitis Foundation Medical Advisory Board and a chairman of the Home Health Care Committee of the Jewish Social Services Agency. Dr. Korman has been repeatedly named a Top MD in Washingtonian Magazine and Consumers’ Checkbook Magazine, as well as a 2014 Regional Top Doctor by Castle Connolly. He also earned the American Gastroenterological Society’s Distinguished Clinician of the Year Award in 2015. Dr. Korman has contributed to numerous publications and presentations on gastroenterology topics. Dr. Korman is rated as an Advanced provider by MediFind in Endoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Autoimmune Hepatitis, Stomach Cancer, Ulcerative Colitis, Colonoscopy, and Endoscopy. Dr. Korman is board certified in American Board Of Internal Medicine.

Erik Vakil is an Intensive Care Medicine provider practicing medicine in Washington, Washington, D.c.. Dr. Vakil is rated as an Advanced provider by MediFind in Endoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Pleural Effusion, Lung Cancer, Pleurisy, Respiratory Syncytial Virus (RSV) Infection, and Endoscopy.

Andrew Lerner, M.D., is a clinical instructor of medicine in the pulmonary and critical care medicine department at the Johns Hopkins University School of Medicine, as well as the director of interventional pulmonology at the Johns Hopkins Kimmel Cancer Center at Sibley Memorial Hospital. He practices out of Sibley Memorial Hospital in Washington, D.C. Dr. Lerner is part of the Sibley Memorial Hospital Lung Nodule and Lung Cancer Screening Clinic, the Multidisciplinary Pulmonary and Thoracic Surgery Clinic, and the Multidisciplinary Thoracic Tumor Board Conference. Dr. Lerner has an expertise in minimally invasive procedures for the early diagnosis and treatment of malignant and non-malignant diseases of the airways, lungs and pleura. He is experienced in advanced diagnostic and therapeutic bronchoscopy, including endobronchial ultrasound (EBUS) bronchoscopy, navigational bronchoscopy, rigid bronchoscopy, tumor ablative techniques, airway stent placement, airway dilation, radial EBUS, conventional transbronchial needle aspiration (TBNA), bronchial thermoplasty, whole lung lavage and percutaneous lung biopsy; as well as percutaneous tracheostomy, tunneled pleural catheter placement, thoracentesis, tube thoracoscopy, medical thoracoscopy, chemical pleurodesis and upper endoscopy (EGD/PEG) placement. Dr. Lerner earned his medical degree from George Washington University School of Medicine. He completed his residency in internal medicine at Thomas Jefferson University Hospital, followed by a fellowship in pulmonary and critical care medicine at the University of California, San Diego. Dr. Lerner then completed a two-year advanced fellowship in interventional pulmonology at The Johns Hopkins Hospital, including a chief fellowship year. He has been involved in multiple research projects in the field and completed a Science of Clinical Investigation Certificate Program at Johns Hopkins University Bloomberg School of Public Health. Dr. Lerner has been a member of the Alpha Omega Alpha medical honors society since 2011 and earned The Johns Hopkins Hospital Patient Safety Star Award in 2016. Dr. Lerner has contributed to numerous presentations, lectures, publications, book chapters and abstracts. He is a reviewer for several research journals. Dr. Lerner has various research interests and is currently involved in research projects focusing on EBUS bronchoscopy, lung cancer diagnosis and staging, and other topics. Confidential email to reach Dr. Lerner for any questions: alerner@jhu.edu. Dr. Lerner is rated as an Experienced provider by MediFind in Endoscopy. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Lung Nodules, Lymphofollicular Hyperplasia, Pleural Effusion, Pleurisy, and Endoscopy. Dr. Lerner is board certified in American Board Of Internal Medicine.

Dr. Patrick Mufarrij is a member of the Johns Hopkins Brady Urologic Institute at Sibley Memorial Hospital and is an expert in endourology, including percutaneous and endoscopic urologic surgery; metabolic stone and causes of the recurrent stone formation; and robotic surgery for the reconstruction of the urinary tract. He also serves as the Division Cheif for Urology at Sibley Memorial Hospital. Dr. Mufarrij earned his undergraduate degree and his medical degree from Georgetown University School of Medicine. He completed residencies in general surgery and urology at New York University School of Medicine, followed by special training in endourology during a fellowship at Wake Forest Baptist Medical Center. During his fellowship, Dr. Mufarrij focused on metabolic kidney stone disease, surgery for complex kidney stones, percutaneous renal surgery and robotic surgery. Dr. Mufarrij is a member of the American Urological Association. Dr. Mufarrij has contributed to numerous publications on the topics of urology. Dr. Mufarrij is rated as an Experienced provider by MediFind in Endoscopy. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Kidney Stones, Perirenal Abscess, Carbuncle, Ureteroscopy, and Lithotripsy. Dr. Mufarrij is board certified in American Board Of Urology.

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 Endoscopy. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Hiatal Hernia, Hernia, Gastroesophageal Reflux Disease (GERD), Endoscopy, and Gallbladder Removal. Dr. Parker is board certified in American Board Of Surgery.

Dr. Michail Mavros, a surgical oncologist specializing in complex cancers, is deeply committed to offering his patients personalized, advanced care. Originally from Athens, Greece, Dr. Mavros's passion for oncology was sparked during medical school after losing a close friend to cancer. This life-changing event inspired him to dedicate his career to improving the lives of cancer patients. Dr. Mavros is one of few surgeons with accredited subspecialty training in both complex surgical oncology and hepato-pancreato-biliary (HPB) surgery, making him highly qualified to treat cancers of the liver, pancreas, and bile ducts. He is also skilled in minimally invasive techniques, including laparoscopic and robotic-assisted surgery, which offer benefits such as faster recovery, reduced pain, and improved outcomes. At the heart of Dr. Mavros' approach is his belief in individualized care. He works closely with a multidisciplinary team of experts, including medical oncologists, radiation oncologists, and pathologists, to ensure each patient receives a thorough evaluation. This collaborative approach results in comprehensive, personalized treatment plans. By leveraging the latest advances in precision medicine, Dr. Mavros tailors his treatments to meet the unique needs of each patient, guided by the most current scientific research and evidence-based practices. Dr. Mavros is rated as an Experienced provider by MediFind in Endoscopy. He is also highly rated in 7 other conditions, according to our data. His clinical expertise encompasses Neuroendocrine Tumor, Familial Pancreatic Cancer, Pancreatic Cancer, Pancreatectomy, and Pancreaticoduodenectomy. Dr. Mavros is board certified in American Board Of Surgery.

Stephen R. Broderick, M.D., MPHS, is an assistant professor of surgery at Johns Hopkins University School of Medicine and a thoracic surgeon, part of a multidisciplinary team treating lung cancer patients in the Johns Hopkins Kimmel Cancer Center. Listen to Dr. Broderick's Cancer Matters podcast episode to learn more about his work. Dr. Broderick's primary clinical focus is at Sibley Memorial Hospital, in Washington, D.C. He also practices at The Johns Hopkins Hospital and Johns Hopkins Bayview Medical Center in Baltimore, Maryland. Dr. Broderick has a clinical expertise in surgical treatment of lung cancer, esophageal cancer and other thoracic malignancies, as well as benign thoracic conditions. This includes achalasia, bronchoscopy, chest wall reconstruction and tumors, lung nodules and paraesophageal hernias. He has a clinical interest in minimally invasive surgery for lung cancer and the coordinated delivery of multidisciplinary care for thoracic oncology patients. Before joining Johns Hopkins, Dr. Broderick was a thoracic surgeon at St Luke’s Hospital, where he served as the medical director of the cardiothoracic intensive care unit and a member of the oncology steering committee. He also served as an instructor of surgery at Washington University School of Medicine. Dr. Broderick received his medical degree from Georgetown University School of Medicine in 2003 and he completed his internship and residency training in general surgery at New York-Presbyterian Hospital. He studied the molecular biology of lung cancer as a research fellow at Memorial Sloan Kettering Cancer Center, where he received the Chairman's Award for outstanding contributions to the basic science research fellowship. Dr. Broderick also completed a fellowship in thoracic surgery at Washington University School of Medicine in 2012 and earned a Masters in Population Health Science from Washington University School of Medicine in 2014. Dr. Broderick is a member of the American College of Chest Physicians, The Society of Thoracic Surgeons and the American Society of Clinical Oncology. Dr. Broderick’s research interests are focused on improving outcomes for lung cancer patients. He is particularly interested in studying how various treatments for early-stage lung cancer impact patients’ quality of life. Dr. Broderick has contributed to numerous publications and is a reviewer for the Journal of Cardiovascular and Thoracic Surgery, as well as Annals of Thoracic Surgery. Dr. Broderick is rated as an Experienced provider by MediFind in Endoscopy. He is also highly rated in 12 other conditions, according to our data. His clinical expertise encompasses Lung Cancer, Non-Small Cell Lung Cancer (NSCLC), Lung Nodules, Tubal Ligation, and Lung Transplant. Dr. Broderick is board certified in American Board Of Thoracic Surgery and American Board Of Surgery.

Sarojini Qasba is an Emergency Medicine specialist and a Hospital Medicine provider practicing medicine in Washington, Washington, D.c.. Dr. Qasba is rated as an Experienced provider by MediFind in Endoscopy. Her clinical expertise encompasses Sepsis, COVID-19, Multisystem Inflammatory Syndrome in Children (MIS-C), Hip Replacement, and Gastrostomy. Dr. Qasba is board certified in American Board Of Internal Medicine and American Board Of Pediatrics.

Mark Hofmeyer is a Cardiologist practicing medicine in Washington,, Washington, D.c.. Dr. Hofmeyer is rated as an Experienced provider by MediFind in Endoscopy. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Cardiomyopathy, Dilated Cardiomyopathy (DCM), Heart Failure, Heart Transplant, and Endoscopy. Dr. Hofmeyer is board certified in ABIM - Advanced Heart Failure And Transplant Cardiology.

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 Endoscopy. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Hernia, Ogilvie Syndrome, Obesity in Children, Sleeve Gastrectomy, and Gastrectomy. Dr. Lamond is board certified in American Board Of Surgery.

Dr. Chefetz serves as Associate Chief Medical Officer and Physician Advisor for Sibley Memorial Hospital. Her areas of clinical expertise are Hospital Medicine and Internal Medicine. Dr. Chefetz is rated as an Experienced provider by MediFind in Endoscopy. Her clinical expertise encompasses Liver Failure, Pediatric Myocarditis, Heart Failure with Preserved Ejection Fraction (HFpEF), Colonoscopy, and Endoscopy. Dr. Chefetz is board certified in American Board Of Internal Medicine.

Dr. Gruber sees patients Monday thru Friday in Building D, Level 4. Dr. Daniel Gruber earned a Bachelor of Science at the University of California, Irvine, and was commissioned into the Air Force. After serving as an officer in an aircraft maintenance squadron at Offutt AFB, NE and simultaneously earning a Masters of Science degree he completed his medical degree at Creighton University in Omaha, Nebraska. He then finished OB/GYN residency at David Grant Medical Center at Travis AFB in Northern California. Dr. Gruber then was a general OB/GYN in Birburg, Germany and at Joint Base Andrews, MD. His next accomplishment was completing a fellowship in Female Pelvic Reconstructive Pelvic Surgery (Urogynecology) at Walter Reed National Military Medical Center. He stayed there for the next 9 years serving in multiple roles, including Division Director for Urogynecology, Assistant Department Chief for OB/GYN, Fellowship Director, creating numerous surgical videos and publications. All while having the highest clinic and surgical volume in the Urogynecology Division. After serving 22 years active duty, he retired as a Colonel. Dr. Gruber is a Fellow of the American College of Obstetricians and Gynecologists, and serves in several roles for the American Urogynecologic Society and Society of Gynecologic Surgeons. He is also an Associate Professor at the Uniformed Services University and an Assistant Professor for Johns Hopkins Medicine. Dr. Gruber is currently Medical Director of Urogynecology at Sibley Memorial Hospital. Dr. Gruber is highly skilled in all office-based procedures and all minimally invasive surgical techniques. Videos What Women Need to Know about Urogynecological Treatment. Dr. Gruber is rated as an Experienced provider by MediFind in Endoscopy. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Urinary Incontinence, Stress Urinary Incontinence, Orgasmic Dysfunction in Women, Hysterectomy, and Endoscopy. Dr. Gruber is board certified in American Board Of Obstetrics And Gynecology.

Olaya Gutierrez is a Gastroenterologist practicing medicine in Washington, Washington, D.c.. Dr. Gutierrez is rated as an Advanced provider by MediFind in Endoscopy. She is also highly rated in 9 other conditions, according to our data. Her clinical expertise encompasses Achalasia, Gastroesophageal Reflux Disease (GERD), Hiatal Hernia, Endoscopy, and Lithotripsy.

Mikael Petrosyan, MD, MBA, is a distinguished pediatric surgeon and nationally recognized leader in general and thoracic surgery. He serves as chief of the Division of General and Thoracic Surgery at Children’s National Hospital in Washington, D.C., where he also holds key leadership roles as surgical director of Perioperative Services and program director of the Pediatric Surgery Fellowship. Academically, he is a professor of Surgery and Pediatrics at The George Washington University School of Medicine & Health Sciences. Dr. Petrosyan received his medical degree from Rosalind Franklin Chicago Medical School and completed his general surgery residency at Los Angeles County + University of Southern California. He went on to complete a pediatric surgery fellowship at Children’s National and later earned a Master of Business Administration from The George Washington University. He is board-certified in both General Surgery and Pediatric Surgery and is a Fellow of the American College of Surgeons and the American Academy of Pediatrics. A pioneer in surgical innovation and program development, Dr. Petrosyan has led the creation of several multidisciplinary initiatives at Children’s National, including the Thoracic and Foregut Program and Chest Wall Deformities Program. His clinical and research interests focus on pediatric achalasia, minimally invasive foregut procedures, congenital chest wall anomalies, trauma and surgical education. Dr. Petrosyan is a prolific academician with numerous peer-reviewed publications and numerous book chapters. His expertise has earned him recognition in major media outlets such as NPR, BBC and The Washington Post, where he has shared insights on pediatric trauma and health disparities. Deeply committed to education and outreach, Dr. Petrosyan founded SURGUCATION, a widely followed YouTube and podcast platform designed to educate parents and caregivers about pediatric surgery. He also extends his impact globally as a surgical consultant and educator in Armenia. Clinical Interests: Pediatric foregut and esophageal disorders, thoracic surgery, minimally invasive surgery, chest wall deformities, trauma, oncology, bariatric surgery, endoscopy and surgical education. Dr. Petrosyan is rated as an Advanced provider by MediFind in Endoscopy. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Appendicitis, Pectus Excavatum, Pectus Carinatum, Gastrostomy, and Endoscopy. Dr. Petrosyan is board certified in Pediatric Surgery: American Board Of Surgery, 2015, Surgery (General Surgery): American Board Of Surgery, 2011, and Cardiothoracic Surgery: American Board Of Surgery, 2011.

Claire Lawlor is a Pediatrics provider practicing medicine in Washington, Washington, D.c.. Dr. Lawlor is rated as an Experienced provider by MediFind in Endoscopy. She is also highly rated in 8 other conditions, according to our data. Her clinical expertise encompasses Tracheobronchomalacia, Tongue Tie, Laryngomalacia, Endoscopy, and Myringotomy. Dr. Lawlor is board certified in Otolaryngology-Head And Neck Surgery and Complex Pediatric Otolaryngology.

Terrence Fullum is a Bariatric Medicine provider practicing medicine in Washington, Washington, D.c.. Dr. Fullum is rated as an Experienced provider by MediFind in Endoscopy. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Obesity, Hernia, Choledocholithiasis, Gallbladder Removal, and Gastric Bypass.