Our Surgeons

Dr. Michael J. Orris, DO, MBA, FASMBS

Dr. Orris is a partner and one of the lead surgeons at our Phoenix, Tempe, Arrowhead, and Tucson weight loss center locations.

Dr. Michael J. Orris, DO, MBA, FASMBS

Dr. John J. DeBarros, MD, FACS, FASMBS

A lead surgeon at WLIA, Dr. DeBarros practices a team approach to surgical weight loss in the Phoenix area which includes diet, exercise and education for long term success.

Dr. John J. DeBarros, MD, FACS, FASMBS

Dr. Jason Richardson, MD

A fellowship-trained and board-certified surgeon, Dr. Jason Richardson has a deep appreciation for the life-changing effects that compassionate care can have on patients.

Dr. Jason Richardson, MD

Dr. Catherine Ho, DO

Dr. Catherine Ho joined the WLIAZ team in 2013. She is a board-certified surgeon and a fellowship trained surgeon specializing in minimally invasive surgery and bariatrics.

Dr. Catherine Ho, DO

Dr. Thomas Buddensick, MD

Dr. Buddensick is a board certified and fellowship trained general and bariatric surgeon. He joined the Weight Loss Institute of Arizona in 2016.

Dr. Thomas Buddensick, MD