Our Surgeons

The outcome of your bariatric surgery begins with your surgeon. East Valley Surgery Center is owned and operated by Dr. Michael Orris and Dr. John DeBarros, both top bariatric surgeons and premier LAP-BAND® specialists in Arizona. Through weight loss surgery, they help people from Phoenix, Scottsdale, Mesa, and across the Southwest lead healthier, more fulfilling lives.

Your comfort, safety, and health are our priorities at East Valley Surgery Center. We are an approved Bariatric Surgery MBSAQIP Accredited – Comprehensive Center. Meeting the highest standards in the industry for cleanliness, surgeries, and outcomes. If you have any questions before you visit us in Arizona for bariatric surgery call us in Tempe at (480) 829-6100.

Dr. Michael J. OrrisD.O., M.B.A., F.A.S.M.B.S.

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

Dr. Thomas BuddensickM.D.

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

Dr. John J. DeBarrosM.D., F.A.C.S., F.A.S.M.B.S.

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. Jason RichardsonM.D.

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. Catherine HoD.O.

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.