What Is a Fertility Specialist and What Do They Do?

A fertility specialist is a doctor who focuses exclusively on diagnosing and treating problems with conception and reproduction. Most fertility specialists are reproductive endocrinologists, meaning they completed medical school, a four-year residency in obstetrics and gynecology, and then an additional three-year fellowship specifically in reproductive medicine. For male infertility, the specialist is typically a urologist with fellowship training in reproductive andrology.

How Fertility Specialists Differ From OB/GYNs

Your OB/GYN handles a wide range of women’s health needs: annual exams, prenatal care, childbirth, and surgeries like those for fibroids or endometriosis. A fertility specialist picks up where your OB/GYN leaves off. Their entire practice centers on figuring out why conception isn’t happening and building a treatment plan to change that.

The training gap is significant. After finishing a standard OB/GYN residency, a reproductive endocrinologist completes 36 months of fellowship training in reproductive endocrinology and infertility. During that time, they must also complete and defend a research thesis. Board certification then requires passing both a written qualifying exam and an oral certifying exam through the American Board of Obstetrics and Gynecology. This additional training gives them deep expertise in hormonal disorders, reproductive anatomy, and lab-based conception techniques that general OB/GYNs don’t typically perform.

Conditions They Diagnose and Treat

Fertility specialists evaluate a broad range of issues that interfere with getting pregnant. Some of the most common include polycystic ovary syndrome (PCOS), which disrupts ovulation; endometriosis, where tissue similar to the uterine lining grows outside the uterus; and primary ovarian insufficiency, where the ovaries stop functioning normally before age 40. They also investigate thyroid disorders, elevated prolactin levels, structural problems in the uterus or fallopian tubes, and genetic conditions like Turner syndrome.

About a third of infertility cases involve a male factor, and fertility specialists work on that side too. A reproductive endocrinologist may collaborate with a urologist trained in andrology, who specializes in conditions like low sperm count, poor sperm motility, or blockages in the reproductive tract. These andrologists are trained in microsurgical techniques like vasectomy reversals and sperm retrieval procedures.

What Happens at a First Appointment

An initial fertility consultation typically involves a detailed medical history for both partners, followed by a set of diagnostic tests. For women, this often includes blood work measuring key reproductive hormones like estrogen, progesterone, follicle-stimulating hormone (FSH), and anti-Müllerian hormone (AMH), which gives a picture of ovarian reserve. A pelvic ultrasound checks the ovaries and uterus for structural abnormalities.

Your specialist may also recommend a hysterosalpingogram, a procedure where dye is injected into the uterus and X-rays are taken to check whether the fallopian tubes are open. If the uterine cavity needs a closer look for fibroids or scar tissue, a sonohysterogram uses saline and ultrasound instead. For male partners, a semen analysis is usually one of the first tests ordered. The goal of this workup is to identify the specific barrier to conception so treatment can be targeted rather than trial-and-error.

Common Fertility Treatments

Treatment plans range from straightforward to highly technical, depending on the diagnosis. On the simpler end, ovulation induction uses medication to stimulate egg release, sometimes paired with timed intercourse. Intrauterine insemination (IUI) places concentrated sperm directly into the uterus around the time of ovulation, bypassing some of the obstacles sperm face in reaching the egg. An IUI cycle with monitoring and medications typically costs $2,000 to $7,000.

In vitro fertilization (IVF) is the most well-known assisted reproductive technology. Eggs are retrieved from the ovaries after a course of injectable hormone medications, then fertilized with sperm in a laboratory. The resulting embryo is transferred to the uterus several days later. A single IVF cycle runs between $15,000 and $30,000 when you include medications and additional services. In cases of severe male infertility, a technique called intracytoplasmic sperm injection (ICSI) can be used during IVF, where a single sperm is injected directly into an egg rather than relying on the sperm to penetrate it on its own.

As of 2025, 22 U.S. states plus the District of Columbia have laws requiring some degree of insurance coverage for fertility treatment, though the scope varies widely. Some mandates cover IVF and fertility preservation, while others only cover diagnostic testing. Whether your specific plan applies depends on your employer and the terms of your coverage.

The Team Behind the Specialist

Fertility clinics aren’t one-doctor operations. A reproductive endocrinologist leads the medical decisions, but a broader team handles much of the day-to-day patient experience. IVF coordinators, usually registered nurses, serve as your main point of contact. They walk you through medication protocols, relay test results, manage scheduling around your cycle, and answer questions between appointments. Embryologists work in the lab, handling eggs, sperm, and embryos during IUI and IVF procedures. Many clinics also have nurse practitioners managing specific programs like third-party reproduction (egg donation, surrogacy) and mental health counselors on staff or by referral.

When to See a Fertility Specialist

The general guideline from the American Society for Reproductive Medicine is to seek evaluation after 12 months of regular unprotected intercourse if you’re under 35, or after 6 months if you’re 35 or older. For women over 40, a more immediate evaluation is recommended because egg quality and quantity decline more rapidly at that stage. If you already know about a condition linked to infertility, such as PCOS, endometriosis, irregular or absent periods, or a history of pelvic surgery, there’s no reason to wait for those timelines. An evaluation can and should start right away.

How to Evaluate a Fertility Clinic

U.S. fertility clinics are required to report their assisted reproductive technology outcomes to the CDC annually. These reports are publicly available and include clinic-specific success rates broken down by patient age, type of cycle, and other factors. The Society for Assisted Reproductive Technology (SART) also publishes verified clinic data. These numbers give you a starting point, but success rates alone don’t tell the whole story. Clinics that accept more complex cases may have lower headline numbers despite excellent care. Look at rates for your age group and diagnosis, and pay attention to how comfortable you feel with the team’s communication and approach during your consultation.