IVF SPECIALIST What is an IVF doctor called? A reproductive endocrinologist is defined as a gynecologist who has additional training in infertility and fertility treatment. These professionals treat both male and female fertility issues, unlike andrologists. When should I see an IVF specialist? If you are over 35 years of age and trying for a pregnancy , it is always good to see a fertility specialist. A woman is born with a fixed egg pool and it reduces, sometimes drastically after 35. Your fertility specialist will check your egg reserve and guide according.