Dr. Robert L. Sawyer

Dr. Lowe enjoys treating all aspects of Gastroenterology and Liver disease. His goal is to treat each patient like a family member and this is exemplified by his excellent listening skills and compassionate care. He has received Vitals Compassionate Doctor and Patients' Choice Awards yearly since 2010.  He feels privileged to provide care for patients in the East Valley and all over Phoenix for over 15 years and looks forward to continuing.Our mission is to provide you with personalized, high-quality gastrointestinal care.  Sonoran Gastroenterology Associates is dedicated to improving and maintaining your health. Dr. Lowe and Dr. Khosla are Board Certified Gastroenterologists with years of experience. Dr. Lowe is rated as a Distinguished provider by MediFind in the treatment of Gas Bloat Syndrome. His top areas of expertise are Diverticular Disease, Gastroesophageal Reflux Disease (GERD), Gas Bloat Syndrome, Hemorrhoids, and Gastrectomy.

Dr. Khosla has expertise in all aspects of digestive and liver diseases. He has a novel and highly successful approach to irritable bowel. His goal is to provide compassionate care to every patient and perform endoscopy with diligence.Our mission is to provide you with personalized, high-quality gastrointestinal care.  Sonoran Gastroenterology Associates is dedicated to improving and maintaining your health. Dr. Lowe and Dr. Khosla are Board Certified Gastroenterologists with years of experience. Dr. Khosla is rated as a Distinguished provider by MediFind in the treatment of Gas Bloat Syndrome. His top areas of expertise are Colonic Malakoplakia, Viral Gastroenteritis, Colitis, and Gastroesophageal Reflux Disease (GERD).

Barbara Maccollum is a Gastroenterologist in Glendale, Arizona. Dr. Maccollum is rated as a Distinguished provider by MediFind in the treatment of Gas Bloat Syndrome. Her top areas of expertise are Gas Bloat Syndrome, Diverticular Disease, Gastroesophageal Reflux Disease (GERD), and Diarrhea.