South Bay Gastroenterology

South Bay Gastroenterology Medical Group is the oldest and most prestigious gastroenterology practice in the South Bay region of Los Angeles.

Our teams of physicians are skilled at treating all aspects of digestive disorders and liver disease utilizing the most sophisticated and technically advanced methods. Our physicians are from some of the finest training programs in the country and are committed to providing our patients with excellent compassionate care.

The practice is affiliated with the Endoscopy Center of the South Bay, the first state licensed free standing endoscopy center in California. Our state of the art facility is approved and certified by both Medicare and the State of California as an ambulatory surgery center (ASC). Virtually all gastrointestinal endoscopic procedures are performed at the Endoscopy Center of the South Bay including colon cancer surveillance.

South Bay Gastroenterology Medical Group is a participating provider for Medicare and most PPO contracts in Southern California. The physicians are members of Torrance Health IPA (THIPA) and Torrance Memorial Integrated Physicians (TMIP). We use both Little Company of Mary and Torrance Memorial as our two inpatient facilities.

We are dedicated to providing excellence in quality gastroenterology care, endoscopic expertise and serving the needs of our community to promote gastrointestinal health and wellness.

Hospitals

South Bay Gastroenterology Medical Group physicians have hospital privileges at the following hospitals:

Torrance Memorial Medical Center
3330 Lomita Blvd.
Torrance, CA 90505
Click Here for Map
(310) 325-9110
www.torrancememorial.org

Little Company of Mary Hospital
4101 Torrance Blvd.
Torrance, CA 90503
Click Here for Map
(310) 540-7676
california.providence.org

Meet Our Physicians

Mary Ahmadian, N.P.

Mary Ahmadian has practiced as a registered nurse since 2006. She began her career as a night-shift critical care nurse and has worked as an ICU nurse, staff educator, clinical instructor, case manager, and an advanced practice transitional care nurse. She has experience in various settings including the hospital, clinic, skilled nursing facility, long-term acute care facility, and home visits.

Dr. Cohen is a board certified gastroenterologist. He specializes in all aspects of gastrointestinal disease, including the liver and pancreas. He has practiced in the south bay for over 25 years. He is currently the Principal Investigator on many of our ongoing research studies.

Dr. Chan attended the California Institute of Technology graduating with honors in B.S. in Biology. She then went on to the East Coast to the John’s Hopkins School of Medicine for medical school. She underwent an internal medicine internship and residency at Barnes Hospital which is affiliated with the Washington University School of Medicine in St. Louis. And coming back full circle to Los Angeles, she finished up with a gastroenterology fellowship at UCLA Medical Center in 1994. Since that time she has been in private practice with the South Bay Gastroenterology Medical Group.

Dr. Lee is a board certified gastroenterologist who specializes in all aspects of gastrointestinal and liver disorders. He has a special interest in viral hepatitis and has dedicated his practice toward advanced diagnostic and therapeutic endoscopy. After graduating from high school in 1990, Dr. Lee was accepted into the Integrated B.A./M.D. Honors Program in Medical Education at Northwestern University in Evanston, Illinois.

Dr. Sze studied Biochemistry at UCLA and graduated from USC school of Medicine. She did her intenal Medicine internship and residency at Los Angeles County-USC Medical Center, where she also completed her fellowship in Gastrointestinal and Liver Diseases. She was a clinical instructor at University of Irvine Medical Center where she also underwent advance fellowship training in Endoscopic Ultrasound.

A native southern Californian, Dr. Oren Zaidel received his Bachelor of Arts from the University of California at Berkeley. He then returned to southern California and received his medical degree from the Keck School of Medicine at USC.

Wendy Ard has been a physician assistant for over 30 years with broad clinical experience in both private practice and academic settings. She started her career in Gastroenterology and then practiced in internal medicine, cardiology, and primary care before returning to G.I medicine.

Dr. Nguyen received his medical degree from the University of Vermont College of Medicine in 2007. He completed his internship and residency at Cedars-Sinai Medical Center from 2007-2010, and served as Chief Resident from 2010-2011. He then completed his gastroenterology fellowship at Loyola University Medical Center in Maywood, IL from 2011-2014, and also served as Chief Fellow in his final year. He returned to California to complete an Advanced Fellowship in Inflammatory Bowel Disease at Cedars-Sinai Medical Center from 2014-2015 before joining the South Bay Gastroenterology Medical Group.

Dr. Kapadia is a board certified gastroenterologist with expertise in the full spectrum of gastrointestinal and liver diseases. He has additional fellowship training in advanced diagnostic and therapeutic endoscopy. He provides care with a compassionate patient-centered approach that fosters open dialogue and understanding.

Dr. Cho is a board-certified gastroenterologist with expertise in the diagnosis and management of a wide spectrum of gastrointestinal disorders. Given Dr. Cho’s experience on faculty at UCLA Health for 11 years, he is familiar with both common and rare gastrointestinal conditions.

Dr Tran is an internationally renowned liver specialist and was the Medical Director of Liver Transplantation at Cedars-Sinai Medical Center and Professor of Medicine at Geffen UCLA School of Medicine. She has been triple board certified by the ABIM in Internal Medicine, Gastroenterology, and Transplant Hepatology.

Dr. Alexander Nguyen is a board-certified gastroenterologist who specializes in all aspects of gastrointestinal and liver disorders. He has clinical expertise in interventional and therapeutic endoscopy, including treatment of pancreaticobiliary diseases like pancreatitis and pancreatic cancer, and the evaluation of the small and large intestines.

Dr. Melissa Munsell is a Board-certified Gastroenterologist who has expertise in the diagnosis and management of general gastrointestinal disorders. She has an interest in the management of inflammatory bowel disease (IBD).

Jung Li is board-certified Nurse Practitioner with experience caring for patients with gastrointestinal disorders.

Cancer Prevention

Women’s Health

IBD

Liver Disease

South Bay Gastroenterology

Hospitals

Meet Our Physicians

Mary Ahmadian, N.P.

Jerome Cohen, MD

Susanna Chan, MD

Tonny Lee, MD

Gloria Sze, M.D.

Oren Zaidel, M.D.

Wendy Ard, P.A.C, MPH

Minh Nguyen, M.D.

Samir Kapadia, MD

Daniel Cho, M.D.

Tram Tran, MD, FACG, FAASLD

Alexander Nguyen, MD

Melissa Munsell, M.D

Jung Li, N.P

Schedule Your Appointment Today