Shawn P. Kaye, MD

Dr. Nadeau is an accomplished physician who brings extensive experience to Hoag Medical Group. While he has many areas of interest, the majority of his recent work, research, and lectures focus on diabetes, obesity, and nutrition. Dr. Nadeau received his medical degree from Tufts University School of Medicine and also earned a master's degree in nutrition from Tufts University School of Nutrition. Dr. Nadeau is the recipient of the National Research Service Award. His publications include both peer-reviewed journal articles and book chapters, and he has recently co-authored a book on nutrition entitled The Color Code: A Revolutionary Eating Plan for Optimum Health in collaboration with James Joseph, PhD, of Tufts University and Anne Underwood of Newsweek magazine. He has several recent publications in Postgraduate Medicine on managing patients with diabetes and is working on an article for Physician and Sportsmedicine on managing diabetes in motivated patients. Prior to joining Hoag Medical Group, Dr. Nadeau served as an Assistant Professor of Medicine at Tufts Medical School and Medical Director of Diabetes, Endocrinology and Nutrition at Exeter Hospital in New Hampshire and Eastern Maine Medical Center in Maine. Passionate about his work and helping his patients achieve their goals, Dr. Nadeau brings his comprehensive knowledge, patient-centric approach for diabetes and thyroid conditions, and cheery disposition to Hoag Medical Group. Dr. Nadeau traveled around the world with a backpack after college. He runs, bikes, and lift weights to help balance the calories from cooking and eating, which he enjoys even more than exercise.

Catherine Ngo, M.D. has a comprehensive background in general gastroenterology with specific interests in gastrointestinal motility and disorders of the gut-brain interaction. Dr. Ngo offers individualized patient care and works with her patients to optimize their health and wellness. She is board certified and fellowship trained in gastroenterology and hepatology, as well as skilled in endoscopic techniques and diagnostic interpretations of various motility studies. As Director of Motility for the Hoag Digestive Health Institute, providing innovation and personalized technology that improve diagnostic and prognostic capabilities in the realm of motility and functional disorders remain her priority. Dr. Ngo attended UCLA where she earned a Bachelor of Science in biology. She then attended Wake Forest University School of Medicine where she received an NIH fellowship grant in translational research. She completed her internal medicine residency and gastroenterology fellowship training at UC Davis. While there, she presented in a broad range of research areas including the utility of diagnostic testing to predict patient disease progression and outcomes in inflammatory bowel disease, optimization of colonoscopy water technique to improve exam quality and patient experience, and evaluation of the efficacy of a training program for endoscopy assistants to improve physician procedural success and patient satisfaction. Dr. Ngo is an active member of the Orange County community. She has led the creation of a motility referral program, been an associate medical director for outpatient ambulatory GI services, served as hospital liaison for inpatient GI services, and acted as medical director for an outpatient endoscopy center. She looks forward to using all her experiences to create a better and brighter future for her south county community.

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