H.H. Chao Comprehensive Digestive Disease Center (CDDC)

H.H. Chao Comprehensive Digestive Disease Center

The H.H. Chao Comprehensive Digestive Disease Center (CDDC) is one of the few facilities in the nation — and the only one in Orange County — to provide state-of-the-art care to patients with digestive diseases, including disorders of the esophagus, stomach, liver, pancreas, colon and rectum.

We specialize in treating gastroesophageal reflux, achalasia and inflammatory bowel diseases, as well as leading-edge colorectal cancer screening and other procedures aimed at the early detection and prevention of cancer. 

Our patients receive compassionate care from a multidisciplinary team that includes gastroenterologists, surgeons, oncologists, pathologists, radiologists, nurses and a host of other healthcare providers, all of whom work in concert to design a personalized treatment plan that optimizes care and promotes the best possible outcomes.

To ensure the safety of patients and employees alike, we conduct daily COVID-19 screening of all physicians, healthcare providers, staff and patients. We also follow masking, physical distancing and rigorous deep-cleaning procedures at all our locations.

Learn more about UCI Health COVID-19 safety measures (video) ›

To schedule a consultation at one of our seven locations, please call 888-717-4463 or complete our online appointment request form ›

At the CDDC, our multidisciplinary team of physicians and healthcare professionals care for patients across the full spectrum of conditions and diseases affecting the gastrointestinal system, including cancers of the liver, pancreas, gall bladder, intestines, stomach, colon, rectum and anus.

Our multidisciplinary team includes gastroenterologists, surgeons, medical oncologists, pathologists, radiologists, dietitians, nurses, social workers and case managers. Together, they work with you to develop a treatment tailored to your individual needs. 

Our bariatric surgeons are national leaders in performing the safest and most effective weight-loss procedures. They team with dieticians, counselors and other healthcare professionals to help obese patients achieve their weight-loss goals and improve their health.

We also have Orange County’s only multidisciplinary program to treat ulcerative colitis and Crohn’s disease. And our hepatology specialists are leaders in the treatment of hepatitis.

We also are one of the few centers in the nation authorized to perform fecal microbiota transplants (FMT), an experimental treatment designed to eradicate deadly gut microbes such as Clostridium difficile.

Learn more about the services provided by our CDDC team:

The CDDC’s multidisciplinary team of specialists delivers leading-edge treatment for a broad range of gastrointestinal (GI) conditions, including disorders of the esophagus, stomach, liver, pancreas, colon and rectum.

We are leaders in the treatment of gastroesophageal reflux disease (GERD), obesity and inflammatory bowel disease, offering minimally invasive approaches that mean less pain and faster recovery for our patients.

Our specialists, led by the center's director, Dr. Kenneth Chang, also have pioneered a treatment for patients whose reflux disease has developed into Barrett’s esophagus, a condition in which precancerous cells arise in the esophageal lining. Using thin, flexible tubes called endoscopes, they deliver radiofrequency waves that eliminate abnormal cells with heat energy, allowing healthy cells to replace them.

CDDC physicians use minimally invasive endoscopic techniques for a wide range of other gastrointestinal procedures. Our integrated endoscopic suite features:
  • Capsule endoscopy
  • Endoscopic ultrasound
  • Video endoscopy
  • Enteroscopy
  • Esophageal manometry
  • Radiofrequency ablation
  • 48-hour wireless pH testing
  • ERCP/fluoroscopy
  • Laser photodynamic therapy
  • Cryotherapy

The CDDC has been recognized as a leader in gastroenterology and GI surgery by U.S. News & World Report. Many of our CDDC physicians have been named Best Doctors in America®, an honor recognizing the top 5 percent of doctors in the nation. They also have been honored as Physicians of Excellence by the Orange County Medical Association. 

As physicians at Orange County’s only university medical center, our CDDC doctors are actively involved in clinical research trials. This means our patients have access to leading-edge therapies and technologies well before they are available elsewhere.