About Us Dr. Hamilton is a board certified EAR, NOSE, THROAT doctor who brings new advances in the practice of ENT to the Emerald Coast. He is committed to medical excellence and stresses concern and personal attention within the realm of conservative medical ethics. The Donald E. Hamilton Hearing Aid Center provides expert hearing testing and evaluation for hearing aids by a Doctor of Audiology. Amazing advances have been made in hearing aid technology in recent years, and this center can make the best recommendations to meet your needs.