A fertility doctor is a reproductive endocrinologist — a physician who practices a subspecialty of obstetrics and gynecology called reproductive endocrinology and infertility (REI). REI is an area of medicine that addresses hormonal functioning as it pertains to reproduction and infertility in both women and men.
Explanation : A couple has been trying to conceive a child for more than a year. The husband would visit an Andrologist if he suspects that he was infertile.
An andrologist is a specialized doctor professional who deals with problems associated to male health, and specifically when the problems are related to the male reproductive system or any urological problems which are unique to men.