Dr. Gavin graduated from Northwestern University and Medical School. He is Board Certified in Internal Medicine, Cardiovascular Disease and Interventional Cardiology. Dr. Gavin has practiced in Olympia, Washington for the last twenty-one years. He is Director of The Heart Program at Providence St. Peter Hospital in Olympia, Washington. Providence St. Peter Hospital has been voted repeatedly one of the top 100 Cardiovascular Hospitals by Solicient.

During the last decade the number of Americans who are overweight or obese has increased dramatically. Excess weight contributes to cardiovascular disease by causing diabetes, high blood pressure, and high cholesterol levels. Dr. Gavin observed the effects of this trend in his practice. He developed the Three Rule Diet to help his patients lose weight and achieve a healthier lifestyle.