Tonny Lee, MD

Dr Tonny Lee | Gastroenterologist Torrance CA | Long Beach CA


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.

Education and Training

After graduating as valedictorian 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. He continued his medical education at Northwestern University Feinberg School of Medicine in Chicago, Illinois. He graduated with honors in 1997, and then came to California, where he completed his internship and residency in Internal Medicine at University of Southern California Medical Center. There, he was the recipient of the Best Resident Award in 1999, an honor voted by his peers. Dr. Lee then completed his Gastroenterology fellowship at the UCLA Center for the Health Sciences/Harbor-UCLA Medical Center from 2000 to 2003, with special focus and research on pancreatico-biliary disorders and advanced therapeutic endoscopy. He joined the South Bay Gastroenterology Medical Group in 2003, and has enjoyed private practice tremendously. With a keen interest in patient education and health awareness, Dr. Lee has been a strong proponent of colorectal cancer prevention and viral hepatitis management with frequent lectures to the South Bay community and healthcare providers. He has continued to champion novel treatment modalities for the patients, including new hemorrhoidal treatment techniques as well as being instrumental in establishing the protocol for fecal microbiota transplantation. In recent years, Dr. Lee has become an active member of the medical community with dedicated involvements in multiple committees at his hospitals. Since 2012, he has served multiple terms as the Chief of the Department of Medicine and Secretary/Treasurer of the Medical Staff at Torrance Memorial Medical Center. At Providence Little Company of Mary Medical Center, he is currently the Chair of the Gastroenterology Division and Medical Director of the GI Lab. In addition, Dr. Lee has also served many years as a clinical instructor in the Division of Gastroenterology at Harbor-UCLA Medical Center/David Geffen School of Medicine at UCLA.He resides in the South Bay with his wife, Jessica, a Dentist Anesthesiologist, and their two children. He is fluent in Mandarin and Taiwanese.


Dr. Lee is currently a member of the American College of Gastroenterology, American Gastroenterological Association, American Society For Gastrointestinal Endoscopy, Southern California Gastroenterology Society, Asian Health Foundation, and the Asian-American Physicians Association.

Practice Location

Torrance Memorial Medical Center and Providence Little Company of Mary Medical Center, Torrance, CA.
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Dear South Bay Gastroenterology patients,

Our thoughts are with our patients, their loved ones, and our entire South Bay community during this unprecedented time. We would like to share our support as well as updates on SBGI’s response to the Coronavirus (COVID-19) pandemic. The safety and well-being of the community are of the utmost importance to us, and we are vigilantly monitoring and evaluating this evolving situation. In light of concerns around COVID-19 and the recommendations and guidance of numerous agencies, we have elected to pre-emptively suspend all non-urgent office consultations and outpatient procedures. The office will remain open for urgent consultations only, and all non-urgent follow-ups will be served via Telehealth or be rescheduled. We will continue to provide hospital coverage for our inpatient population at both Torrance Memorial Medical Center and Providence Little Company of Mary Medical Center. SBGI has been in daily communications with both hospital leadership teams in our unified effort to curtail the spread of this virus. We will provide additional updates in the coming weeks to inform you about any changes to public and practice policies. As COVID-19 continues to spread throughout our country, the health and safety of our patients, healthcare providers, and employees is a top priority for South Bay Gastroenterology. We regret any inconvenience this may cause to your schedule and look forward to continuing to serve your healthcare needs.

Please submit any questions via our website and we will get back to you as soon as possible.

Kim Georgian
South Bay Gastroenterology