Our Providers

Keith H. Fiman, MD, FACG

Keith H. Fiman, MD, FACG

Dr. Fiman attended college and medical school at Boston University, graduating with honors in 1986. He was elected to membership in both Phi Beta Kappa and Alpha Omega Alpha Medical Honor Society. He completed his internal medicine training and three year gastroenterology fellowship at the University of Texas Southwestern medical center in Dallas. He is board certified in both Internal Medicine and Gastroenterology. He is an assistant clinical professor of medicine at Baylor College of Medicine.

Isaac Raijman, MD, FACP, AGAF, FASGE

Isaac Raijman, MD, FACP, AGAF, FASGE

Dr. Isaac Raijman is a nationally and internationally recognized gastroenterologist and therapeutic endoscopist with over 20 years of experience. In addition to his clinical practice, he is currently Chief of Gastroenterology at CHI Baylor St. Luke’s Hospital. In addition to general gastroenterology, Dr. Raijman has specific clinical interests as listed below, as well as in the development of new techniques and technology in endoscopy.

Nitesh Vachhani MD

Nitesh Vachhani, MD

Dr. Nitesh Vachhani is a board certified gastroenterologist and a board certified internist who has been practicing in Richmond, Rosenberg, and Sugar Land, TX since 2009. He is an active member of numerous national and local organizations, including the American Gastroenterological Association and Fort Bend Medical Society.

Dang M Nguyen, MD

Dang M Nguyen, MD

Dr. Dang Nguyen has over five years of experience in the field of gastroenterology and is currently a Diplomat of the American Board of Internal Medicine and the American Board of Gastroenterology. He received his medical degree at Baylor College of Medicine in 2004. As a medical student at Baylor, Dr. Nguyen participated in many volunteering works including caring for homeless patients of Houston and travel to Honduras with the Baylor Shoulder to Shoulder program to provide medical care to the underserved. Dr. Nguyen completed his internal medicine residency and gastroenterology fellowship at Baylor College of Medicine in 2010.

Nizar Charafeddine, M.D.

Nizar Charafeddine, MD

Private Practice in Texas since 1998 spanning the Houston metropolitan area including the medical center, Baytown, Pasadena, LaPorte, Clear Lake, Pearland and Angleton



Weight Loss Without Surgery

The introduction of bariatric surgery has revolutionized the treatment of obesity and its associated comorbidities. It is highly recommended when diet, exercise and medicines fail to bring about significant weight loss in the severely obese.

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