Catherine Ngo, MD


Saddleback Medical Group, Inc.


24221 Calle de la Louisa
Third Floor, Suite 300
Laguna Hills, CA 92653

Phone: (949) 770-7163
Fax: (949) 465-0946

Online Forms:



University of California Los Angeles, Graduated with honors, Bachelors degree, 2001.
Wake Forest University School of Medicine, Graduated with honors, M.D. degree, 2006.

Postgraduate Training:

University of California Davis, Internal Medicine Internship and Residency, 2009.
University of California Davis, Gastroenterology and Hepatology Fellowship program, 2012.

Board Certification:

American Board of Internal Medicine, 2009.
American Board of Internal Medicine, Gastroenterology Subspecialty, 2012.

“I believe that in medicine, the patient’s choice is key to obtaining and maintaining good health. My goal as a doctor is to treat my patients with the utmost compassion and understanding, and to form a plan of care that works best for each individual.”

Catherine Ngo, MD is Board-Certified in Internal Medicine and Gastroenterology. In addition to preventative care and diagnosis, advanced diagnostics and therapy, Dr. Ngo has interests in gastrointestinal motility disorders and pancreaticobiliary disease.

Dr. Ngo earned her Medical Degree from the Wake Forest University School of Medicine in North Carolina where she graduated with honors and was awarded with memberships into the Alpha Omega Alpha Honor Medical Society and the Gold Humanism Honor Society. She completed her Internship, Residency, and Gastroenterology Fellowship at UC Davis Medical Center in Sacramento, CA.

Dr. Ngo is a member of the American College of Gastroenterology and American Society for Gastrointestinal Endoscopy. Her numerous abstracts and articles are published in peer-reviewed medical journals.

Dr. Ngo enjoys photography, painting, and cooking. As a native to southern California, she returned to Orange County where she lives with her husband, two children, and maltese poodle.

Dr. Ngo is affliated with Saddleback Memorial Medical Center and the Digestive Care Center in Laguna Hills.