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Ketan Shah MD

“Exciting cutting-edge therapies and technologies are emerging in the field of Gastroenterology and changing the entire landscape. I am excited to be a part of this era and treat, cure, and even prevent diseases in ways that were previously unthinkable, enabling patients to live longer, healthier lives. My highest priority is to offer hope, compassion, and genuine care to every single patient.”

Dr. Shah completed his undergraduate degree in Biology with a specialization in Computing at UCLA, where he graduated with Honors. He earned his Medical Degree from USC’s Keck School of Medicine with Dean’s Recognition and was elected to the Alpha Omega Alpha Honor Medical Society. While at USC, he concurrently obtained his Master’s in Business Administration and was elected to the Beta Gamma Sigma Honor Society. Dr. Shah continued his training at Duke University, where he completed a dual residency in both Internal Medicine and Pediatrics and represented 1000+ trainees on the hospital’s Executive Committee of the Medical Staff. Finally, he completed his Fellowship in Gastroenterology from UC Irvine, where he trained under world-renowned experts.

Dr. Shah is highly experienced in colon cancer screening and prevention. Having trained under some of the world's experts at UC Irvine, he has extensive experience in advanced endoscopy and colonoscopy techniques, including removal of large colon polyps, ERCP, stent placement, dilation, and removal of precancerous and early cancerous lesions from the gastrointestinal tract. He is also skilled in performing procedures for the diagnosis and treatment of gastroesophageal reflux disease and its complications, including Barrett's esophagus and esophageal cancer, and motility procedures such as pH studies and esophageal and anorectal manometry. Dr. Shah was the 1st community gastroenterologist in Orange County, CA to perform the Transoral Incisionless Fundoplication procedure for GERD.

Dr. Shah’s double board certification, along with additional training in pediatric gastroenterology, including pediatric endoscopy and inflammatory bowel disease, has led to an additional interest in transitioning the care of pediatric GI patients to an adult gastroenterologist. His research studies led to the discovery of multiple childhood risk factors that increase the chance of developing adult-onset gastrointestinal illnesses. Dr. Shah’s research team was the first in the world to establish a direct link between pediatric gastroesophageal reflux disease and Barrett's esophagus and esophageal cancer.

Dr. Shah is an outstanding physician with extensive clinical expertise along with utmost warmth and compassion for his patients. He is fluent in Spanish and proficient in Gujarati and Hindi.

He lives with his family in Orange County and is an accomplished violinist who also enjoys photography, technology, and skiing.


Ashley Kim PA-C

“My goal is to provide every patient with the necessary education and support so that they are able to make well-informed decisions regarding their health. I want to offer a collaborative environment for patients and empower them to live their best and healthiest life.”

Ashley Kim, PA-C is a certified physician assistant who has been with Dr. Ketan Shah since 2021. She specializes in acute and chronic gastrointestinal disorders, especially in preventative care and disorders that can be further evaluated and treated with the newest technological advances and medical treatments in the field. She is also able to evaluate and treat the entire spectrum of gastrointestinal disorders, including GERD, eosinophilic esophagitis, H. pylori, gastric ulcers, dysphagia, liver disease, pancreatic and bile duct conditions, celiac disease, irritable bowel syndrome, and colon cancer screening and prevention.  She stays up to date in the field by regularly attending national conferences and staying up to date on the most current research on gastroenterological conditions. 


Ashley earned her physician assistant degree from USC's Keck School of Medicine. When she's not involved in patient care, she enjoys hiking, playing tennis, trying new cuisines, and spending quality time with her family and corgis. 


University of California, Irvine

       Bachelor of Arts, Public Health Policy


University of Southern California | Los Angeles, CA

       Master of Physician Assistant Practice

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