Kian Keyashian is a Gastroenterologist in Stanford, California. Dr. Keyashian is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Viral Gastroenteritis, Crohn's Disease, Colitis, Endoscopy, and Colonoscopy.

Allison Zhang is a Gastroenterologist in Stanford, California. Dr. Zhang is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. Her top areas of expertise are Familial Adenomatous Polyposis, Trichohepatoenteric Syndrome, Diarrhea, and Gas Bloat Syndrome.

Sean Spencer is a Gastroenterologist in Stanford, California. Dr. Spencer is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Irritable Bowel Syndrome (IBS), Small Bowel Bacterial Overgrowth, Tenesmus, and Gas Bloat Syndrome.

Andrea Portocarrero is a Gastroenterologist in Stanford, California. Dr. Portocarrero is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. Her top areas of expertise are Irritable Bowel Syndrome (IBS), Tenesmus, Gas Bloat Syndrome, Viral Gastroenteritis, and Endoscopy.

David Limsui is a Gastroenterologist in Stanford, California. Dr. Limsui is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Hemorrhagic Proctocolitis, Endoscopy, and Colonoscopy.

Tu Nguyen is a Gastroenterologist in Menlo Park, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Familial Adenomatous Polyposis, Turcot Syndrome, Gardner Syndrome, and Gastroesophageal Reflux Disease (GERD).

Calvin Lei is a primary care provider, practicing in Internal Medicine in Menlo Park, California. Dr. Lei is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Type 2 Diabetes (T2D), Squamous Cell Lung Carcinoma, Lung Adenocarcinoma, and ALK-Positive Non-Small Cell Lung Cancer.

Atulkumar Shah is a Gastroenterologist and a Hepatologist in Redwood City, California. Dr. Shah is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Hiatal Hernia, Congenital Diaphragmatic Hernia, Diverticular Disease, Endoscopy, and Gastrectomy.

Sundeep Singh is a Gastroenterologist in Redwood City, California. Dr. Singh is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Viral Gastroenteritis, Colitis, Crohn's Disease, Ulcerative Colitis, and Gastrectomy.

Linda Nguyen is a Gastroenterologist in Redwood City, California. Dr. Nguyen is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. Her top areas of expertise are Gastroparesis, Irritable Bowel Syndrome (IBS), Morning Sickness, Intestinal Pseudo-Obstruction, and Colonoscopy.

John Clarke is a Gastroenterologist in Redwood City, California. Dr. Clarke is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Achalasia, Painful Swallowing, Swallowing Difficulty, Endoscopy, and Colonoscopy.

I strongly believe in providing compassionate, thorough and up to date medical treatment for all of my patients. I strive to be a good listener to determine the best diagnostic and therapeutic approach for each patient every time I see them in the office. Our entire team here at Peninsula Gastroenterology Medical Group does our best to ensure your visit will be pleasant and stress free! I look forward to meeting with you. Dr. Rengstorff is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Diarrhea, Trichohepatoenteric Syndrome, Indigestion, Endoscopy, and Gastrectomy.

Medicine is an integral and active partnership between patient and physician. I strive to provide care for all my patients with warmth, compassion, and patience. I value being thorough, straightforward, and practicing medicine at the forefront of technology and research. I look forward to being a part of my patient's healthcare team. Dr. Leung is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. Her top areas of expertise are Gastric Dysmotility, Gastroesophageal Reflux Disease (GERD), Familial Adenomatous Polyposis, Endoscopy, and Gastrectomy.

Patients are the customers and owners of their health. Doctors are providers of information, education and personalized services to the patients. While doctors are good sources of opinions and guidance, ultimately all decisions should come from well informed patients. Dr. Yang strongly believes the best medical care is delivered when the doctor is a knowledgeable and compassionate patient advocate which includes providing clear communication, recommending options that have sound scientific basis, and developing action plans that are customized and well organized. It is the patient-centric approach that has served Dr. Yang and her patients well over many years. Dr. Yang is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. Her top areas of expertise are Familial Adenomatous Polyposis, Gastric Dysmotility, Indigestion, Portal Hypertension, and Colonoscopy.

Dr. Torosis is a native of Montreal, Canada and founded Peninsula Gastroenterology Medical Group in 1986. Dr. Torosis attended medical school and internship at McGill University in Montreal. In 1982 Dr. Torosis moved to California where he completed his internal medicine residency in San Diego. He attended Yale University for his fellowship in Gastroenterology and Liver Diseases. In 1986 at the completion of his fellowship, he moved to the Peninsula. Dr. Torosis is rated as an Experienced provider by MediFind in the treatment of Bile Acid Malabsorption. His top areas of expertise are Ulcerative Colitis, Diverticular Disease, Familial Adenomatous Polyposis, Colonoscopy, and Gastrectomy.