Advanced Podiatry, Union: Dr. Glenn A Davison, DPM, FACFAS Dr's Davison is a board-certified podiatrist who specialize in the diagnosis and treatment of all foot-related disorders in all age groups. For each patient, he formulates a treatment plan which works, and is easy to follow. Dr. Davison has been practicing podiatry for over 25 years, has written numerous articles and text book chapters, and performed in radio and television interviews. Proper foot care is just as essential to your total well being as a healthy diet and regular exercise. Your podiatrist’s role is to keep you on your feet so you can do things you want to do.