William Hasler, MD

William L. Hasler, MD, is a gastroenterologist specializing in gastroenterology and hepatology, with a focus on gastrointestinal motility disorders through his role in the Motility Clinic at Mayo Clinic in Phoenix, Arizona. He treats conditions such as diabetic gastroparesis, functional bowel disease, pancreatic disease, and diarrhea, drawing from his extensive expertise in gut motility and visceral sensation. With over 43 years of experience since graduating medical scho