Dr. Wiita is a graduate of the University of Minnesota Medical School. She became board certified in Family Practice after completing her residency in the Mayo/St. Cloud Hospital program.

She earned her undergraduate degree in Food Science and Nutrition and became a Registered Dietitian before going on to Medical School. After residency, she worked for several years at the Park Nicollet Eating Disorders Institute, now known as Melrose Institute. She later transitioned to working with overweight and obese patients at the Park Nicollet Bariatric Surgery Department and eventually returned to Melrose to develop their Medical Weight Loss Program.