Dr. David N. Speranza

Dr. Onwueme graduated with Distinction from Yale University with dual BSc/MSc degrees in chemistry and received MD and PhD degrees from Weill Cornell Medical College. He completed his Internal Medicine residency at Brigham and Women’s Hospital (Clinical Fellow Harvard Medical School) and his Gastroenterology fellowship at Johns Hopkins University School of Medicine. He is currently the Director of clinical trials at Woodholme Gastroenterology and has an ardent interest in the role of microbial metabolites in gut diseases. Dr. Onwueme prizes commitment to quality and compassionate patient care to which he devotes his practice. He has expert knowledge in gut microbiology and a special interest in diarrheal diseases, disordered gut motility, autoimmune and inflammatory bowel disease. Dr. Onwueme is rated as an Advanced provider by MediFind in the treatment of Bowel Incontinence. His top areas of expertise are Gastric Dysmotility, Diverticular Disease, Diarrhea, Endoscopy, and Gastrectomy.

Dr. Kathryn E. Kirk is a gastroenterologist affiliated with Sibley Memorial Hospital, George Washington University Hospital, Washington Hospital Center and the University of Maryland Baltimore Washington Medical Center. She practices out of Capital Digestive Care’s Metropolitan Gastroenterology Group in Washington, D.C., Chevy Chase, Md. and Bethesda, Md. Dr. Kirk has an expertise in gastroesophageal reflux disease, colorectal cancer screening and irritable bowel syndrome. She has special interests in colon cancer screening and prevention, celiac disease and eosinophilic esophagitis. Dr. Kirk earned her undergraduate degree from Princeton University and her medical degree from Weill Medical College of Cornell University. She completed a residency in internal medicine at Beth Israel Medical Center, followed by fellowships in hepatology and gastroenterology at Mount Sinai Hospital. Dr. Kirk is a member of the American College of Gastroenterology, the American Society for Gastrointestinal Endoscopy, the Crohn’s and Colitis Foundation of America and the American Gastroenterological Association. Dr. Kirk has been consistently recognized as a Top Doctor by Washingtonian magazine. Dr. Kirk is rated as a Distinguished provider by MediFind in the treatment of Bowel Incontinence. Her top areas of expertise are Crohn's Disease, Ulcerative Colitis, Gastroesophageal Reflux Disease (GERD), and Eosinophilic Colitis.

Rajih Alkhafaji is a Gastroenterologist in Lancaster, Pennsylvania. Dr. Alkhafaji is rated as a Distinguished provider by MediFind in the treatment of Bowel Incontinence. His top areas of expertise are Painful Swallowing, Swallowing Difficulty, Hemorrhoids, Gastrectomy, and Colonoscopy.