
Reproductive Endocrinologists: Everything You Need to Know About Fertility Experts
When starting or growing a family, the process may not be easy for everyone. A great deal of couples or individuals encounter challenges such as miscarriages, hormonal problems, and infertility, which makes the process intricate. Well, you may be thinking about needing fertility treatments and hear about reproductive endocrinologists and wonder who they are. Reproductive endocrinologists (REs), most commonly known as fertility doctors, help people grow their families through assisted reproduction like surrogacy, egg donation, sperm donation, and all that good stuff. Whether you are seeking guidance on your reproductive health or struggling with infertility, a reproductive endocrinologist (RE) plays a crucial role in providing expert advice and treatment. These are specialized doctors who assist couples and individuals in overcoming their reproductive hurdles and ultimately achieving their dream of having a baby. This article will address these important questions: Who is a reproductive endocrinologist? What do they do? How can I find a good one? Who are the top reproductive endocrinologists in the 20 biggest cities in the USA? What questions can I ask a reproductive endocrinologist to find a good match?
Who is A Reproductive Endocrinologist?
A reproductive endocrinologist is an obstetrician/gynecologist (OB/GYN) physician who specializes in diagnosing and treating endocrine disorders that directly or indirectly affect reproduction. They assist people who can't have a baby, have trouble having a baby, or want to have a baby. Reproductive endocrinologists are also referred to as REs.
Simply put, an RE is a fertility doctor specializing in the endocrine system.

Reproductive Endocrinologist
What Is The Endocrine System?
The endocrine system is a network of glands that produce hormones. Hormones facilitate communication within the body by sending signals. It is an essential system for reproduction to take place. The primary glands involved in reproduction are:
- Ovaries, which secrete estrogen, progesterone, and testosterone.
- The pituitary gland is the master gland that controls other glands and hormone production.
- Hypothalamus, which regulates body temperature, moods, hunger, and hormone release.
When these glands are depleted or dysfunctional, hormone production and release are affected, leading to issues like ovulation problems and ultimately causing infertility. By supporting the endocrine system, REs can enhance fertility.
Differences between Reproductive Endocrinologist and Obstetrician-Gynecologist (OB-GYN)
If fertility specialists are reproductive endocrinologists, aren't they the same as an obstetrician/gynecologist? Well, sort of. However, an RE is first an Obstetrician-Gynecologist (OB-GYN), then goes on to specialize to become an RE. Reproductive endocrinology is a subset or subspecialty of obstetrics and gynecology. Keep in mind that an OB-GYN is not equivalent to an RE. A simple distinction between an OBGYN and a Reproductive Endocrinologist: An OBGYN offers general women's healthcare and prenatal care and delivers babies, including basic infertility treatment options. A Reproductive Endocrinologist, on the other hand, is a specialist who focuses specifically on reproductive health, infertility, and hormonal disorders, providing advanced treatments like in vitro fertilization (IVF) and egg freezing. So, what does an RE do, then?
What Does A Reproductive Endocrinologist Do?
A reproductive endocrinologist can diagnose and treat abnormalities in the endocrine system, particularly infertility and reproductive issues. They handle a spectrum of problems, including:
- Hormonal imbalances causing delayed puberty or menopause
- Polycystic Ovarian Syndrome (PCOS)
- Endometriosis
- Irregular menstrual cycles
- Infertility in men and women
They can run various tests such as semen tests and an x-ray of the uterus as well as the fallopian tubes to check for problems. An RE can perform an ovarian reserve test to measure the level of various reproduction-related hormones. They can also test for or administer follicle-stimulating hormones to enhance fertility. They not only diagnose various infertility problems but also perform various infertility treatments like Intrauterine insemination (IUI) and in vitro fertilization (IVF).
If you have problems with menstrual cycles or periods, whether you're trying to have a baby or not, they can help you with that. Also, if you have had one or more miscarriages, no matter how careful you try to be during each pregnancy, an RE can help establish the cause and possibly treat it. You also may need to see an RE for a diagnosis around potential endometriosis symptoms like painful periods, pelvic pain, or even cramping around the menstrual cycle time. Endometriosis is a serious condition because if it is left untreated, it could lead to infertility or even subfertility, which is just the reduced ability to become pregnant.
A reproductive endocrinologist can also diagnose Polycystic Ovarian Syndrome (PCOS), which is a leading cause of infertility. Polycystic ovarian syndrome is a condition that affects a woman's hormone levels. Women with PCOS produce higher than normal amounts of male hormones. The imbalance causes women to have irregular menstrual periods or to skip a period altogether. PCOS makes it difficult for women to get pregnant.
Other problems a reproductive endocrinologist can help you with include sexual function, issues in the testicle area, abnormal breast growth, and a lower-than-normal sperm count.

What Does A Reproductive Endocrinologist Do
What is Reproductive Endocrinology & Infertility?
You may have heard about REI and wondered what it stands for. REI stands for Reproductive Endocrinology and Infertility, which is the field of medicine that deals with assisting individuals or couples with getting pregnant who encounter difficulties doing so on their own. REI physicians are doctors who specialize in all things related to conception, reproduction, and managing any issues that may prevent individuals from becoming pregnant. REI physicians are famous for fertility treatments such as in vitro fertilization (IVF), intrauterine insemination, or IUI; however, they deal with an enormous scope.
REI physicians address a wide range of issues that cause infertility, from hormone imbalances to endometriosis, polycystic ovarian syndrome, or PCOS, as well as some cancers. Furthermore, REI doctors also assist individuals or couples in preserving their ability to have children in the future through procedures such as sperm and egg cryopreservation or freezing.
When evaluating infertility, the areas of focus are the uterus, fallopian tubes, ovaries, and sperm, as well as the individual’s genetics and general health, to determine why the individual or couple is having difficulty in getting pregnant. REI involves carrying out various procedures to help patients become pregnant by ovulation induction and in vitro fertilization (IVF), intrauterine insemination (IUI), which is sometimes called artificial insemination.
How can I Find a Good Reproductive Endocrinologist?
You may be facing challenges in your reproductive health and wondering how to find a good reproductive endocrinologist. It is crucial to find a qualified RE because they are an invaluable resource to assist you with your problems. Finding the ideal RE is a substantial step toward achieving your reproductive health goals. Here are tips for finding an ideal reproductive endocrinologist:
- Search Online: When searching online, use keywords like "reproductive endocrinologist near me" to find a specialist in your area. Proximity matters when selecting a healthcare provider, considering that fertility care often requires multiple visits. It is essential to start looking for places that are easy for you to get to. You can also ask your insurance company if a clinic or doctor they contract with is within your reach. Once you find a clinic offering fertility treatments with an RE available, check its reputation and for patient reviews and testimonials. Patient reviews can offer valuable insights into the doctor's expertise and the quality of care provided. Many facilities offer adequate and detailed information about their staff, services, accessibility, office hours, and patient reviews. Online directories such as the Society for Assisted Reproductive Technology (SART) and the American Society for Reproductive Medicine (ASRM) can also be helpful resources.
- Evaluate the Clinic’s Resources and Services: A good RE works in a well-equipped clinic. Check for:
- On-site laboratory facilities for semen analysis, blood tests, and egg, sperm, or embryo freezing
- Range of treatments offered, from minimally invasive procedures to advanced options
- Availability of advanced diagnostic tools
- Support services, such as counseling, fitness or nutrition guidance
- Verify Credentials: As you search for an RE, ensure the specialist is board-certified in reproductive endocrinology and infertility. Also, check if they have relevant experience with the specific treatment or diagnosis you require. You may wonder why you should prefer a Board-Certified to a Non-Certified Reproductive Endocrinologist. Here is why:
Board-certified vs. Non-Certified Reproductive Endocrinologists
When choosing a reproductive endocrinologist, evaluating their credentials and relevant experience is critical. A board-certified reproductive endocrinologist has been thoroughly trained and meets the highest standards of clinical expertise in reproductive endocrinology and infertility. While non-certified professionals may have appropriate experience and offer fertility services, a board-certified RE ensures that their skills and knowledge are more profound and validated in the REI field, giving you confidence in their ability to deliver desirable results. To confirm an RE’s certification, visit the American Board of Obstetrics and Gynecology (ABOG) website or equivalent bodies in your region.
- Assess Their Experience and Success Rates: When researching potential REs, consider their years of experience and success rates. Experienced reproductive endocrinologists can deliver quality services.
- Ask for Referrals: It is beneficial to consult your gynecologist, primary care physician, and trusted friends who have undergone similar treatments for a referral to an ideal RE. Word-of-mouth referrals can be beneficial in finding the right doctor for you.
- Visit the Clinic: Once you have researched or obtained a referral, you can schedule a consultation. A good fit should make you feel comfortable, informed, and supported.

How can I Find a Good Reproductive Endocrinologist
Who are the top reproductive endocrinologists in the 20 biggest cities in the USA?
Here are some of the top board certified Obstetrics & Gynecology, Reproductive Endocrinology, & Infertility Clinics in 20 of the most prominent cities in the USA based on information from CDC Assisted Reproductive Technology (ART) Data:
1. New York City, NY
- Manhattan Reproductive Medicine
- New Hope Fertility Center
2. Los Angeles, CA
- California Fertility Partners
- Cedars Sinai Medical Center, Center for Fertility and Reproductive Medicine
3. Chicago, IL
- Institute for Human Reproduction (IHR)
4. San Antonio ,TX
- Fertility Center of San Antonio
5. Phoenix, AZ
- Arizona Reproductive Medicine Specialists, LLC
6. Philadelphia, PA
- Society Hill Reproductive Medicine
7. Miami, FL
- University of Miami Infertility Center
8. Dallas, TX
- ReproMed Fertility Center
9. San Diego, CA
- Fertility Specialists Medical Group
10. Austin, TX
- Aspire Fertility-Austin
- Austin Fertility Institute
11. San Francisco, CA
- Laurel Fertility Care
12. Indianapolis, IN
- Community Fertility Specialty Care
13. Columbus, OH
- Ohio Reproductive Medicine
14. Houston, TX
- Houston Infertility Clinic, Sonja Kristiansen, MD
15. Charlotte, NC
- Program for Assisted Reproduction at Atrium Health's Carolinas Medical Center, CMC Women's Institute
16. Memphis, TN
- Kutteh Ke Fertility Associates of Memphis, PLLC
17. Boston, MA
- Massachusetts General Hospital Fertility Center
18. Lutherville, MD
- Johns Hopkins Fertility Center
19. Atlanta, GA
- Atlanta Center for Reproductive Medicine
20. Jacksonville, FL
- Advanced Reproductive Specialists, Jacksonville Center for Reproductive Medicine
What questions can I ask a Reproductive Endocrinologist to find a good match?
When scheduling a visit with a reproductive endocrinologist, you must prepare relevant questions to assess whether that particular doctor can solve your problems. Choosing the right specialist goes beyond medical expertise; it’s about building a partnership founded on trust, understanding, and shared goals. A skilled reproductive endocrinologist will address your medical needs while providing compassionate emotional support tailored to your unique circumstances.
Here are some questions and key points to ask your reproductive endocrinologist to find a good match:
Before the Visit
Think about the goals you would like to achieve with your fertility treatment. Research and acquaint yourself with the basics of reproductive endocrinology and infertility. Lastly, you can write down your medical history, allergies, medications, and supplements.
Key Questions to Ask
1. What are your clinic's success rates for fertility treatments?
2. Please explain my condition to me and how it comes about.
3. What tests will I need, and what will you be testing for?
4. How will I receive my test results? Will it be through a phone call, patient portal, or follow-up visit?
5. Can you interpret the test results and explain what they mean to me?
6. What treatment options are available, and which do you recommend based on my situation?
7. What are the risks and benefits of each treatment option?
8. What side effects might I experience with this treatment or medication?
9. How much will the treatment cost, and will my insurance cover it?
10. What are your success rates for women like me (e.g., same age, similar circumstances)?
11. Can I do anything to improve my chances of success (e.g., supplements, lifestyle, or nutritional changes)?
12. How soon can I start treatment?
13. Who can I ask if I have questions or concerns throughout the process? Do you offer after-hours support?
14. How often will I need to visit the clinic during treatment?
15. What are the next steps after our visit? Are there any additional tests or appointments I need to schedule?
Reflect After the First Appointment
After the visit, take time to evaluate whether you've found the right doctor.
- Take notes: Write down everything you can remember from the visit.
- Reflect on your feelings during the visit: Do you feel respected? Do you feel heard? Were there clear directions on the next steps?
- Assess the clinic: Are you comfortable with the clinic's services and staff?
- If not, don't be afraid to get a second opinion.
By asking a lot of questions and reflecting on your experience, you can find a reproductive endocrinologist who is a good match for your needs and helps you achieve your fertility goals.
Conclusion
In conclusion, if you are facing fertility issues or challenges in conceiving, a reproductive endocrinologist is the ideal doctor to seek. When looking for a good fit for your needs, it is essential to carry out thorough research. Keeping in mind that, in addition to medical expertise, the right RE should be able to provide emotional support throughout the treatment process. A reproductive endocrinologist deals with various conditions related to the reproductive and endocrine system. Their specialty, which is reproductive endocrinology and infertility, well equips them to provide holistic individualized treatment to couples and individuals seeking to have a baby.
Before your visit, you should prepare appropriate questions tailored to your needs. This article outlines a list of some of the board-certified reproductive endocrinologists with vast experience in REI, which serves as a starting point for those seeking care near them. It is important to review their information before scheduling a visit. With a reproductive endocrinologist by your side through this journey, you are one step to achieving your dream of parenthood.

Dr. Luyando Moonze is a licensed medical doctor, writer, and researcher based in Zambia. With a strong clinical background and passion for health communication, she crafts engaging content to improve women's health outcomes. Dedicated to addressing health disparities, Dr. Moonze bridges the gap between medicine and accessible healthcare information.